North Carolina Agricultural Chemicals Manual

Transcription

2016 North Carolina Agricultural Chemicals Manual
X — DISEASE CONTROL
Foliar Fungicides for Wheat Leaf Disease Control ................................................................................... 430
Seed Treatment for Wheat Foliar Disease Control .................................................................................. 432
Nematode Control in Corn ........................................................................................................................ 432
Fungicides for Control of Corn Foliar Diseases ........................................................................................ 433
Nematode Control on Cotton .................................................................................................................... 435
Peanut Disease Control ............................................................................................................................ 435
Peanut Disease Management Calendar .................................................................................................. 439
Soybean Disease Control ......................................................................................................................... 440
Tobacco Disease Control ......................................................................................................................... 444
Turfgrass Disease Control ........................................................................................................................ 446
Nematicides for Turf ................................................................................................................................. 466
Floral, Nursery, and Landscape Diseases ............................................................................................... 467
Fungicides and Bactericides for Disease Control of Greenhouse Floriculture Crops .............................. 467
Disease Control for Forest, Christmas, and Ornamental Trees ............................................................... 476
Commercial Landscape and Nursery Crops Disease Control .................................................................. 482
Relative Effectiveness of Various Chemicals for Disease Control in Woody Ornamentals ..................... 492
Disease Control for Commercial Vegetables ........................................................................................... 496
Disease Control by Crop ........................................................................................................................................................ 496
Asparagus ............................................................................................................................................................................. 496
Basil....................................................................................................................................................................................... 497
Bean ...................................................................................................................................................................................... 497
Brassicas (Broccoli, Brussel Sprout, Cabbage, Cauliflower) ................................................................................................... 501
Corn, Sweet ........................................................................................................................................................................... 505
Cucurbits (Cucumber, Cantaloupe, Melon, Pumpkin, Squash, Watermelon) .......................................................................... 506
Example Spray Program for Foliar Disease Control in Watermelon Production ...................................................................... 513
Eggplant ................................................................................................................................................................................ 513
Endive ................................................................................................................................................................................... 515
Garlic ..................................................................................................................................................................................... 516
Hop ........................................................................................................................................................................................ 517
Greens, Leafy Brassica (Collard, Kale, Mustard, Rape, Turnip) ............................................................................................. 518
Jerusalem Artichoke .............................................................................................................................................................. 520
Lettuce................................................................................................................................................................................... 520
Okra....................................................................................................................................................................................... 522
Onion ..................................................................................................................................................................................... 523
Parsley .................................................................................................................................................................................. 527
Pea ........................................................................................................................................................................................ 528
Pepper ................................................................................................................................................................................... 529
Potato, Irish ........................................................................................................................................................................... 534
Root Vegetables (Except Sugar Beet) Beet, Carrot, Parsnip, Radish, Turnip ......................................................................... 539
Spinach ................................................................................................................................................................................. 541
Sweetpotato ........................................................................................................................................................................... 542
Tomatillo ................................................................................................................................................................................ 545
Tomato .................................................................................................................................................................................. 546
Nematode Control in Vegetable Crops ........................................................................................................ 554
Relative Efficacy of Currently Registered Fumigants or Fumigant Combinations for Managing Soilborne
Nematodes, Diseases, and Weeds .......................................................................................................... 555
Management of Soilborne Nematodes with Non-Fumigant Nematicides ................................................ 555
Greenhouse Disease Control ...................................................................................................................... 557
Biorational and Biological Products for Greenhouse Disease Management ........................................... 559
Seed Treatments........................................................................................................................................ 561
Sanitizing ................................................................................................................................................... 565
Generic and Alternative Fungicides ............................................................................................................ 567
Fungicide Resistance Management ............................................................................................................ 570
429
Chapter X — 2016 N.C. Agricultural Chemicals Manual
Foliar Fungicides for Wheat Leaf Disease Control
Note: It was not possible to update the information in this table for the 2016 North Carolina Agricultural Chemicals Manual. The
information in this table is current as of Jan. 1, 2015. Anyone using any agricultural chemical should refer to the current chemical label,
which contains information about the safe and effective use of the chemical, before using the chemical.
Table 10-1A. Foliar Fungicides for Wheat Leaf Disease Control
Disease
Fungicide Type and
(FRAC Code)
Fungicide1
Amount of Formulation
Per Acre
Remarks2
Powdery mildew, Leaf Rust
Triazoles (3)
tebuconazole
metconazole (Caramba)
propiconazole (Propimax, Tilt)
3.6 EC
Prothioconazoe (Proline)
Combinations of
Strobilurins and
Triazoles (3,11)
Strobilurins (11)
metconazole (7.4%) +
pyraclostrobin (12.0 %)
(Twinline)
10 to 14 oz
4 fl oz
4.3 to 5.0 oz
7 to 9 fl oz
propiconazole (11.7%) +
azoxystrobin (7.0%) (Quilt)
10.5 to 14 fl oz
prothioconazole (10.8 %) +
trifloxystrobin (32.3%)
(StrategoYld)
4.0 to 4.65 oz
propiconazole (11.7%) +
azoxystrobin (13.5%)
(QuiltXcel)
10.5 to14 fl oz
cyproconazoe (7.2 %) +
picoxystrobin (32.3 %)
Approach Prima
3.4 to 6.8 fl oz
azoxystrobin (Quadris) 2.08 F
6.2 to 10.8 fl oz
pyraclostrobin (Headline)
2.09 EC
Aproach
For Powdery Mildew, apply fungicide only when mildew covers 5% to 10% of area of upper
leaves. For leaf rust, apply fungicide only when disease covers 1% to 3% of total leaf area.
Do not apply after head emergence (Feekes Growth Stage 10.5). Make no more than one
application of tebuconazole per year.
Apply Caramba immediately after flag leaf emergence for optimum control of diseases other than
Fusarium head blight.
leaves. For leaf rust, apply fungicide only when disease covers 1% to 3% of total leaf area.
Do not apply after head emergence (Feekes Growth Stage 10.5).
Do not apply if head scab is anticipated to become a problem.
6 to 9 fl oz
6.0 to 12.0 fl oz
Staagonospora Leaf and Glume Blotch, Tan Spot, Powdery Mildew, Helminthosporium Leaf Spot
Multi-site action (M3) mancozeb (various brands)
4F
80 WP
75 DF
Strobilurins (11)
Combinations of
Strobilurins and
Triazoles (3, 11)
2.09 EC
1.6 qt
2 lb
2 lb
If 25% of the indicator leaves have one or more lesions, then a fungicide application is indicated.
Indicator leaves are:
Feekes Growth Stage 6 to 8: Flag - 4 and Flag - 5
Feekes Growth Stage 8 to10: Flag - 3
Feekes Growth Stage 10 to 10.51: Flag - 2
Feekes Growth Stage 10.52 to 11: Flag - 1
Do not apply mancozeb after late heading (Feekes Growth Stage 10.5) or Tilt after flag leaf
emergence (Feekes Growth Stage 8).
6 to 9 fl oz
leaves.
6.2 to 10.8 fl oz
Aproach
6.0 to 12.0 fl oz
For Stagonospora, if 25% of the indicator leaves have one or more lesions, then a fungicide
application is indicated. Indicator leaves are:
Feekes Growth Stage 6 to 8: Flag - 4 and Flag - 5
Feekes Growth Stage 8 to 10: Flag - 3
Feekes Growth Stage 10 to 10.51: Flag - 2
Feekes Growth Stage 10.52 to 11: Flag - 1
trifloxystrobin +
prothioconazole
(Stratego Yld)
4.0 to 4.65 oz
metconazole (7.4%) +
pyraclostrobin (12.0 %)
(Twinline)
7 to 9 fl oz
cyproconazole (7.2 %) +
picoxystrobin (32.3%)
Approach Prima
3.4 to 6.8 fl oz
Do not apply if head scab is anticipated to become a problem.
Head Scab
Triazoles (3)
1
2
tebuconazole (generic brands)
4 fl oz
Tebuconazole (19.0%) +
prothioconazole (19.0%)
(Prosaro 421 SC)
6.5 to 8.2 fl oz
13.5-17 oz
prothioconazole (Proline)
4.3-5.7 fl oz
Specifically, forward and backward mounted nozzles, or nozzles that have two-directional spray,
should be used. Spraying at 45 degrees down from horizontal has been shown to be most
effective. Operate nozzles within the spray pressure directions suggested by the manufacturer.
Do not make more than one application of tebuconazole per year
Do not apply Caramba within 30 days of harvest.
Do not apply Proline or Prosaro within 30 days of harvest or after full flower (Feekes 10.52).
Fungicides are more likely to be profitable when the yield potential is 50 bushels/acre or more.
Triazole fungicides are generally more effective in control of powdery mildew, while the strobilurins are generally more effective against leaf rust and
Stagonospora. Some triazoles can suppress but not eliminate head scab, whereas strobilurins should not be used if there is concern about head scab.
Further Information
Measured Crop Performance: Small Grain
Small Grain Production Guide: www.smallgrains.ncsu.edu
Copies of these publications are available from your county Cooperative Extension center.
430
Fungicide Efficacy for Control of Wheat Diseases
The North Central Regional Committee on Management of Small Grain Diseases (NCERA-184) has developed the following information
on fungicide efficacy for control of certain foliar diseases of wheat for use by the grain production industry in the U.S. Efficacy ratings for
each fungicide listed in the table were determined by field testing the materials over multiple years and locations by the members of the
committee. Efficacy is based on proper application timing to achieve optimum effectiveness of the fungicide as determined by labeled
instructions and overall level of disease in the field at the time of application. Differences in efficacy among fungicide products were
determined by direct comparisons among products in field tests and are based on a single application of the labeled rate as listed in the
table. Table includes most widely marketed products and is not intended to be a list of all labeled products.
Table 10-1B. Efficacy of Fungicides for Wheat Disease Control Based on Appropriate Application Timing
Active ingredient
Product
Rate/A
(fl. oz)
Stagonospora
leaf/glume blotch
Septoria leaf blotch
Tan spot
Stripe rust
Leaf rust
Stem rust
Head scab
Disease
Powdery mildew
Mixed modes of action4
Triazole
Strobilurin
Class
Fungicide(s)
Picoxystrobin 22.5%
Aproach SC
6.0 - 12
G1
ND
ND
ND
E
GE
ND
ND
Feekes 10.5 and
45 days
Fluoxastrobin 40.3%
Evito 480 SC
2.0 – 4.0
G
ND
ND
VG
ND
VG
ND
NL
Feekes 10.5 and
40 days
Pyraclostrobin 23.6%
Headline SC
6.0 - 9.0
G
VG
GE
E
E2
E
G
NL
Feekes 10.5
Metconazole 8.6%
Caramba 0.75 SL
10.0 - 17.0
GE
GE
ND
GE
E
E
E
G
30 days
Propiconazole 41.8%
Tilt 3.6 EC3
4.0
GE
GE
GE
GE
GE
GE
GE
P
Feekes 10.5
Prothioconazole 41%
Proline 480 SC
5.0 - 5.7
ND
GE
GE
GE
ND
GE
GE
G
30 days
Tebuconazole 38.7%
Folicur 3.6 F3
4.0
G
GE
GE
GE
E
E
E
F
30 days
Prothioconazole19%
Tebuconazole 19%
Prosaro 421 SC
6.5 - 8.2
G
GE
GE
GE
E
E
E
G
30 days
Metconazole 7.4%
Pyraclostrobin 12%
TwinLine 1.75 EC
7.0 – 9.0
G
GE
GE
E
E
E
GE
NL
Feekes 10.5
Fluxapyroxad 14.3%
Priaxor
4.0 - 8.0
G
GE
GE
E
E2
E
GE
NL
Feekes 10.5
Propiconazole 11.7%
Azoxystrobin 7.0%
Quilt 200 SC3
10.5 - 14.0
GE
GE
GE
GE
E
E
GE
NL
Feekes 10.5
Propiconazole 11.7%
Azoxystrobin 13.5%
Quilt Xcel 2.2 SE
10.5 - 14.0
GE
GE
GE
GE
E
E
GE
NL
Feekes 10.5
Prothioconazole 10.8%
Trifloxystrobin 32.3%
Stratego YLD
4.0
G
GE
GE
GE
GE
GE
GE
NL
35 days
Tebuconazole 22.6%
Absolute 500 SC
5.0
G
GE
GE
GE
GE
E
GE
NL
35 days
Harvest
Restriction
1
Efficacy categories: NL=Not Labeled and Not Recommended; P = Poor; F = Fair; G = Good; GE =Good to Excellent (Very Good); E=Excellent; ND =
Insufficient data to make statement about efficacy of this product; NL= Not labeled.
2
Efficacy may be significantly reduced if solo strobilurin products are applied after stripe rust infection has occurred.
3
Multiple generic products containing the same active ingredients also may be labeled in some states. Products including tebuconazole incude: Embrace,
Monsoon, Muscle 3.6 F, Onset, Orius 3.6 F, Tebucon 3.6 F, Tebustar 3.6 F, Tebuzol 3.6 F, Tegrol, and Toledo. Products containing propiconazole include:
Bumper 41.8 EC, Fitness, Propiconazole E-AG, and PropiMax 3.6 EC. Products containing propiconazole + azoxystrobin include: Avaris 200 SC.
4
Products with mixed modes of action generally combine triazole (group 3) and strobilurin (group 11) active ingredients. Priaxor is an exception to this
general statement and combines carboxamide (group 7) and strobilurin active ingredients.
431
Seed Treatment for Wheat Foliar Disease Control
Table 10-2. Seed Treatment for Wheat Foliar Disease Control
Disease
Fungicide
Amount of Formulation per cwt
Remarks
Seed-Borne Stagonospora Nodorum Blotch
difenoconazole
mefenoxam
(Dividend XL)
2 fl oz
tebuconazole + thiram (Raxil - Thiram)
3.5 to 4.6 fl oz
tebuconazole + metalaxl (Raxil XT)
0.6 to 0.2 fl oz
Seed treatments are moderately effective for control of seed-borne SNB.
Barley Yellow Dwarf Virus
imidacloprid
(Gaucho 600 F )
(Gaucho XT)
Effective
0.8 to 2.4 fl oz
3.4 fl oz
Thiametoxam (Cruiser 5FS)
0.75 to 1.33 fl oz
Powdery Mildew
triadimenol (Baytan 30 F) 2
1.5 fl oz
Effective
Nematode Control in Corn
Table 10-3. Nematode Control in Corn
Material and Formulation
terbufos (Counter) 20 G
abamectin (Avicta)
Per 1,000 Feet
Per Acre (36-inch rows)
5 to 6 ounces
5.0 pounds
0.15 mg per seed
Seed treatment
Remarks
Apply in furrow. Do not exceed 6.5 pounds per acre of Counter 20 CR.
Seed treatment
Further Information
Major Corn Diseases in North Carolina. N.C. Cooperative Extension Service, http://ipmwww.ncsu/corn/diseases/corn_diseases.html. A copy of this
publication is available from your county Cooperative Extension center.
432
Fungicides for Control of Corn Foliar Diseases
Table 10-4A. Fungicides for Control of Corn Foliar Diseases (Northern and Southern Blight, Gray Leaf Spot, and Rusts)1
Rate Per Acre
Formulated (fluid
ounces per acre)
Fungicide Type
and FRAC Code
Fungicide
Strobilurins (11)
azoxystrobin (Quadris)
6 to 9 oz
6 to 9 oz
picoxystrobin (Aproach)
Triazoles (3)
6.0-12.0 oz
2 to 4 oz
See label for restrictions.
Application should be with 20 gallons of water/acre for adequate coverage with ground
application, or with 5 gallons of water/acre with aerial applications.
tetraconazole (Domark)
4 to 5 oz
azoxystrobin + propiconazole (Quilt)
1
triflozystrobin + propiconazole (Stratego) 1
prothioconazole + trifloxystrobin
(Stratego Yld)
Apply at R1 to R3 as a preventative or curative spray and 14 to 21 days later if disease
pressure is high. Do not apply after R5 or within 21 days of harvest.
7 to 14 oz
10.0 oz
Do not apply more than10 ounces per year. Do not apply within 14 days of harvest.
10.5 to14 oz
Do not apply more than 84 ounces per year. Do not apply within 30 days of harvest.
fluoxystrobin + flutriafol (Fortix)
4.0 to 6.0 oz
Field corn only, not labeled for sweet corn.
picoxystrobin (32..3%)
Approach Prima
3.4 to 6.8 l oz
10.0 to 17.0 oz
fluoxystrobin + flutriafol
(Fortix)
4 to 6 oz
Fluxapyroxad (14.3%) +
Pyraclostrobin (28.6%)
(Priaxor)
4.0 to 8.0 oz
tetraconazole (7.48) + azoxystrobin
(9.35%) (Affiance)
1
5.7 oz
4.0 to 5.0 oz
azoxystrobin + propiconazole (QuiltXcel)
Combinations of
dicarboximides and
Strobilurins (7, 11)
propiconazole (Tilt)1
Combinations of
Strobilurins and
Triazoles (3,11)
Remarks
1
Fungicides often significantly increase yields only in intensive production systems with high plant populations and adequate moisture.
433
Fungicide Efficacy for Control of Corn Diseases
The Corn Disease Working Group (CDWG) developed the following information on fungicide efficacy for control of major corn diseases in
the United States. Efficacy ratings for each fungicide in the table were determined by field testing the materials over multiple years and
locations by committee members. Efficacy ratings are based on level of disease control achieved by product, and are not necessarily
reflective of yield increases obtained from product application. Efficacy depends on proper application timing, rate, and application
method to achieve optimum effectiveness of the fungicide as determined by labeled instructions and overall level of disease in the field at
the time of application. Differences in efficacy among fungicide products were determined by direct comparisons among products in field
tests and are based on a single application of the labeled rate as listed in the table. Table includes systemic fungicides available that
have been tested over multiple years and locations. The table is not intended to be a list of all labeled products.1
Efficacy categories: NR=Not Recommended; P=Poor; F=Fair; G=Good; GE= Good to Excellent (Very Good); E=Excellent; NL = Not
Labeled for use against this disease; ND = Insufficient data to make statement about efficacy of this product for this disease.
Table 10-4B. Fungicide Efficacy for Control of Corn Diseases
Active ingredient (%)
Product/
Trade name
Rate/A
(fl oz)
Common rust
Eyespot
Gray leaf spot
Northern leaf blight
Southern rust
Disease
Anthracnose leaf blight
Mixed mode of action
DMI Triazoles
Group 3
QoI
Strobilurins
Group 11
Class
Fungicide(s)
Azoxystrobin 22.9%
Quadris 2.08 SC
6.0 - 15.5
GE
E
GE
E
G
G
7 days
Fluoxastrobin 40.3%
Evito 480 SC
2.0 – 5.7
ND
ND
ND
ND
ND
ND
R4 (dough)
Headline 2.09 EC/SC
6.0 - 12.0
ND
E
E
E
GE
E
7 days
Picoxystrobin
Aproach 2.08 SC
3.0 – 12.0
ND
ND
GE
ND
ND
ND
7 days
Propiconazole 41.8%
Tilt 3.6 EC
Multiple Generics
2.0 - 4.0
NL
GE
E
G
G
G
30 days
Proline 480 SC
5.7
ND
ND
ND
ND
GE
G
14 days
Tebuconazole 38.7%
Multiple Generics
4.0 - 6.0
NL
ND
NL
ND
GE
ND
36 days
Tetraconazole 20.5%
Domark 230 ME
4.0 – 6.0
ND
ND
ND
ND
ND
G
R3 (milk)
Azoxystrobin 7.0%
Propiconazole 11.7%
Quilt 200 SC
7.0 - 14.0
NL
GE-E
E
E
GE
GE
30 days
Azoxystrobin 13.5%
Propiconazole 11.7%
Quilt Xcel 2.2 SE
10.5 - 14.0
GE
GE-E
GE-E
E
GE
GE
30 days
Metconazole 5.1%
Headline AMP 1.68 SC
10.0 - 14.4
ND
E
E
E
GE
GE
20 days
Fluxapyroxad 14.33%
Priaxor 4.17 SC
4.0 – 8.0
ND
ND
ND
ND
ND
G
21 days
Propiconazole 11.4%
Stratego 250 EC
10.0 - 12.0
ND
GE
E
GE
G
G
14 days
Stratego YLD 4.18 SC
4.0 - 5.0
GE
E
GE
E
GE
GE
30 days
Harvest
Restriction2
1
Additional fungicides are labeled for disease on corn, including contact fungicides such as chlorothalonil. Certain fungicides may be available for diseases
not listed in the table, including Gibberella and Fusarium ear rot. Applications of Proline 480 SC for use on ear rots requires a FIFRA Section 2(ee) and is
only approved for use in Illinois, Indiana, Iowa, Louisiana, Maryland, Michigan, Mississippi, North Dakota, Ohio, Pennsylvania, and Virginia.
2
Harvest restrictions are listed for field corn harvested for grain. Restrictions may vary for other types of corn (sweet, seed, or popcorn, etc.), and corn for
other uses such as forage or fodder.
Many products have specific use restrictions about the amount of active ingredient that can be applied within a period of time or the amount of sequential
applications that can occur. Please read and follow all specific use restrictions prior to fungicide use. This information is provided only as a guide. It is the
responsibility of the pesticide applicator by law to read and follow all current label directions. Reference to products in this publication is not intended to be an
endorsement to the exclusion of others that may be similar. Persons using such products assume responsibility for their use in accordance with current
directions of the manufacturer. Members or participants in the CDWG assume no liability resulting from the use of these products.
434
Nematode Control on Cotton
Table 10-5. Nematode Control on Cotton
Nematodes
Nematicide
Amount of Formulation Per Acre
Precautions and Remarks
Root-Knot, Columbia Lance, Sting, Reniform
1,3-dichloropropene (Telone II)
3 to 6 gallons
Inject 1 to 2 weeks before planting 8 to 12 inches deep.
sodium methyldithiocarbamate (Vapam HL)
6 to 12 gallons
Inject 2 to 3 weeks before planting.
Reniform, Root-Knot
abamectin (Avicta)
0.15 mg per seed
sodium methyldithiocarbamate (Vapam HL)
6 to 12 gallons
thiodicarb (Aeris) + Bacillus fermis
(Poncho/Votivo)
na
Seed treatment.
Inject 2 to 3 weeks before planting.
Seed treatment
Peanut Disease Control
B. B. Shew, Plant Pathology
Most peanut disease control chemicals leave residues on peanut vines that make them unsuitable for hay. Check each label before using
the material if you intend to feed hay to livestock.
Table 10-6A. Peanut Disease Control
Disease or Diseases Controlled
Pesticide Formulation (FRAC Group
Number)
Amount of
Formulation
Per Acre
Minimum
Days to
Harvest Precautions and Remarks
Application
Schedule
Aspergillus Crown Rot (Aspergillus); see also seedling diseases
azoxystrobin (Abound, various brands) 1
2.08 F (11)
0.4 to 0.8 fl
At planting
oz/1,000 ft of row
NA
Apply as in-furrow spray with 3 to 5 gallons water.
Black Root Rot (CBR) (Cylindrocladium); see also seedling diseases
metam sodium 42% (various brands)
4.25 F
7.5 gal
(6.61 fl oz/100 ft
of row)
At least 2 weeks before
planting or longer if cool
and/or wet
NA
Inject 10 to 12 inches below the bedded soil surface. If wet and/or cold
weather occurs following fumigation, the waiting period should be
extended. Soil aeration helps reduce residual chemical. When in doubt use
a bioassay such as the lettuce seed germination test to determine if safe to
plant. Buffer zones and other restrictions on metam sodium use have been
implemented. See your county Extension center for details.
prothioconazole (Proline) 480 SC (3)
0.4 fl oz/1,000 ft
of row
At planting or at full
emergence
NA
Apply as in-furrow spray or banded at full emergence for suppression of
CBR. Not a substitute for fumigation in fields with a history of more
than10% CBR and rotations of less than 4 years.
Early Leafspot (Cercospora)
cupric hydroxide (Kocide, various brands
and formulations) 2 (M1)
Begin applications at very
Various; see label early pod (R3). Repeat
applications every 10 to
14 days.
0
Use nozzles that give a cone-shaped spray pattern. Use 12 to 24 gallons of
water for spray materials applied by ground sprayers. Use at least 5 gallons
of water for materials applied by air.
Calendar program: Five or six applications suggested. Begin applications
at very early pod (R3). Repeat applications at 10- to 14-day intervals.
Scout fields: if 20% or more of leaflets have spots, switch to a more
effective fungicide and stay on a 14-day spray program.
basic copper sulfate (various brands and
formulations) 2 (M1)
Various; see label See above
0
See above
See above
14
See above
See above
14
See above
Various; see label See above
0
See above
mancozeb and copper hydroxide
(Mankocide) 2 61.1 DF (M3)
mancozeb (Manzate, Koverall, various
brands) 2 (M3)
M45
F45
75 WDG
80 WP
Sulfur
(various brands and formulations) 2 (M2)
2 to 2.6 lb
1 to 2 lb
.8 to 1.6 qt
1 to 2 lb
1 to 2 lb
435
Number)
Amount of
Formulation
Per Acre
Minimum
Days to
Application
Schedule
Early Leafspot (Cercospora); Late Leafspot (Cercosporidium); Web Blotch (Ascochyta)
chlorothalonil (Bravo, Echo, various
brands) (M5)
720, 6 F
82.5 WDG
90 DF
500
1 to1.5 pt
.9 to 1.36 lb
.875 to 1.25 lb
1.5 to 2.25 pt
Begin applications at very
early pod (R3). Repeat
applications every 14 days
or according to daily
weather based advisories.
Begin 14-day program if
web blotch is found
14
Use nozzles that give a cone-shaped spray pattern. Use 12 to 24 gallons of
water for spray materials applied by ground sprayers. Use at least 5 gallons
of water for materials applied by air.
14-day program: Five or six applications suggested. Begin applications at
very early pod (R3). Repeat applications at 10- to 14-day intervals.
Advisory: Begin applications at very early pod (R3). Repeat applications
when weather conditions become favorable as determined by peanut leaf
spot advisories. This schedule requires strict adherence to the program
guidelines and usually results in fewer fungicide applications than the 14day schedule. Contact your county Extension center for details.
Leafspot advisories are most effective if used with long rotations, resistant
varieties, and high rates of effective fungicides.
Scout fields: if 20% or more of leaflets have spots, switch to a more
effective fungicide and stay on a 14-day spray program.
Repeated applications of chlorothalonil can make spider mites and
Sclerotinia blight more difficult to control.
propiconazole +
chlorothalonil premix
(Tilt/Bravo SE) (3 + M5)
See above
14
See above
1.5 pt
boscalid (Endura) 2,3 70 WDG (7)
10 oz
Make up to 2 or 3
applications in mid-season
as part of a full-season,
14-day, or advisory
program
14
See above. Primarily controls web blotch. Alternate with another fungicide
or mix with 0.75 to 1 pint chlorothalonil to improve leaf spot control. Also
controls Sclerotinia blight; see below.
14 day or advisory
beginning at R3
14
See above. Do not apply alone. Mix with another leaf spot fungicide.
Make no more than 3
applications as part of a
full-season, 14-day, or
advisory program
14
See above
2.5 to 4 fl oz
14 day or advisory
beginning at R3
14
See above. Mix or alternate with another fungicide to improve foliar disease
control and to reduce the risk of fungicide resistance.
cyproconazole (Alto) (3) 100SL
5.5 fl oz
14 day or advisory
beginning at R3
30
See above. Mix or alternate with another fungicide reduce the risk of
fungicide resistance.
flutriafol (Topguard) (3) 1.04 SC
7 to 14 fl oz
14 day or advisory
beginning at R3
14
See above. Mix or alternate with another fungicide to reduce the risk of
fungicide resistance
tetraconazole (Eminent) (3) 125SL
6 to 13 fl oz
14 day or advisory
beginning at R3
14
See above. Mix or alternate with another fungicide to reduce the risk of
fungicide resistance
thiophanate methyl (various brands) (1)
4.5 F
70 WP
85 WDG
dodine (Elast) 400 F (U12)
propiconazole (various brands) (3) 3.6 EC
10 fl oz
.5 lb
.4 lb
1.5 pt
Early Leaf Spot (Cercospora); Late Leaf Spot (Cercosporidium); Web Blotch (Ascochyta); Limb Rot (Rhizoctonia)
propiconazole
+
trifloxystrobin (Stratego) (3 + 11)
7 to 14 fl oz
14 day or advisory
beginning at R3
14
See Early Leaf Spot, Late Leaf spot, and Web Blotch above. Use higher
rates for soil-borne pathogens and under wet (rainfall or irrigation)
conditions. No more than 6 applications per season.
tebuconazole + trifloxystrobin (Absolute)
500 SC (3 + 11)
3.5 to 7 fl oz
14 day or advisory
beginning at R3
14
See above. Use higher rates for soil-borne pathogens. No more than 4
applications per season.
Early Leaf Spot (Cercospora); Late Leaf Spot (Cercosporidium); Web Blotch (Ascochyta); Limb Rot (Rhizoctonia); Stem Rot (Sclerotium rolfsii); Pod Rot (Sclerotium
rolfsii, Rhizoctonia)
prothioconazole
+
tebuconazole (Provost) 4 433 SC (3+3)
7 to 10.7 fl oz
Make up to 2 to 4
14-day, or advisory
program. For routine
disease control, use 7 to 8
fl oz/A; also suppresses
CBR at highest rate.
14
See Early Leaf Spot, Late Leaf Spot, and Web Blotch above. For best
control of limb and pod rot, do not use a surfactant. Do not apply more than
3 times in a 5-spray program or after the first week in September.
Resistance management: Site-specific fungicides (groups 3, 7, and 11)
should be mixed or rotated with a fungicide from a different group to
minimize the risk of fungus resistance development.
metconazole (Quash) 50 WDG (3)
2.5 to 4 oz
Make up to 2 to 4
14-day, or advisory
program.
14
See above
tebuconazole (various brands) (3)
3.6 F
1.67 F
7.2 fl oz
15.4 fl oz
See above
14
See above. Many populations of leaf spot fungi are not controlled by
tebuconazole alone. Always mix with chlorothalonil or another fungicide
(other than group 3) that is effective against leaf spots.
penthiopyrad (Fontelis) 3 1.67 SC (7)
12 to 24 fl oz
Make up to 3 applications
per season as part of a
advisory program
14
See above. FRAC guidelines recommend no more than 2 applications of an
unmixed group 7 fungicide in a 5-spray program. Use higher rates for web
blotch control. Also suppresses Sclerotinia blight; see below.
flutolanil
+
propiconazole (Artisan) 3.6 F (7 + 3)
26 fl oz
See label
Use 1 to 3 times per
season a full-season, 14day, or advisory program.
40
See above. Alternate with another fungicide for foliar disease control or mix
with 0.75 to 1 pint chlorothalonil to improve foliar disease control. Do not
plant small grains within 5 months of last application. See label for detailed
information on rates and for other plant-back restrictions.
436
Number)
Amount of
Formulation
Per Acre
Minimum
Days to
Application
Schedule
Early Leaf Spot (Cercospora); Late Leaf Spot (Cercosporidium); Web Blotch (Ascochyta); Limb Rot (Rhizoctonia); Stem Rot (Sclerotium rolfsii); Pod Rot (Sclerotium
rolfsii, Rhizoctonia) (continued)
azoxystrobin (Abound; various brands) 1,4
2.08 F (11)
12.0 to 24.6 fl oz
advisory program. Use
higher rates for limb rot
and stem rot control.
14
See above. Use in mid-season for best control of soil-borne pathogens.
Use no more than 2 applications in a 5 spray program.
minimize the risk of developing fungal resistance.
azoxystrobin + tebuconazole
(Custodia SC)
15.5 fl oz
Make up to 2 to 4
14-day, or advisory
program.
14
See above
fluoxastrobin (Evito, Aftershock) 1 480 SC
(11)
5.7 fl oz
advisory program.
14
See above
fluoxastrobin + tebuconazole (Evito T)
6 to 11.2 fl oz
Make up to 2 to 4
14-day, or advisory
program.
14
See above
pyraclostrobin (Headline) 1,4 2.09 EC,
2.08 SC (11)
6 to 15 fl oz
See above
14
See above
fluxapyroxad + pyraclostrobin
(Priaxor) (7+11)
4 to 8 fl oz
season a full-season, 14day, or advisory program.
Use higher rates for limb
rot and stem rot control.
14
See above
Stem Rot (white mold, Southern blight, Sclerotium rolfsii); Limb Rot (Rhizoctonia); Pod Rot (Sclerotium rolfsii, Rhizoctonia)
flutolanil (Convoy) 3.8 SC (7)
10 to 32 fl oz
See label
Following leafspot
advisories make 1 to 3
applications in midseason. Does not control
foliar diseases.
40
Apply up to 16 fluid ounces per acre at 2-week intervals or up to 32 fluid
ounces per acre at 3- to 4-week intervals. Do not apply more than a
combined total of 64 fluid ounces in a single growing season. See label for
detailed information on rates. Do not plant small grains within 5 months of
last application. See label for other plant-back restrictions.
13.7 fl oz
Follow leafspot advisories
to make 1 or 2
applications in midseason.
14
Apply during periods that favor limb rot development. Also suppresses
Sclerotinia blight and Cylindrocladium black rot; see below.
Various; see label At least 2 weeks before
planting
NA
Inject 8 to 10 inches below the soil surface. Very effective against all
nematodes. Regulations require handler training and impose buffer zones
and other restrictions on fumigant use. See the label and your county
Extension center for details.
Various; see label At least 2 weeks before
planting
NA
Inject 8 to 10 inches below the soil surface. Very effective against all
nematodes. Regulations require handler training and impose buffer zones
and other restrictions on fumigant use. See the label your county Extension
center for details.
NA
Inject 8 to 10 inches below the soil surface. If wet and/or cold weather
occurs following fumigation, the waiting period should be extended. Soil
aeration helps reduce residual chemical. When in doubt use a bioassay
such as the lettuce seed germination test to determine if safe to plant.
Moderately effective against Northern root knot nematode (M. hapla). Not
very effective on peanut root knot nematode (M. arenaria). Buffer zones
and other restrictions on metam sodium use are required. See your county
Extension center for details.
Limb Rot (Rhizoctonia)
fluopyram + prothioconazole
(Propulse) 4 (7 + 3)
Nematodes—Fumigants
1-3 dichloropropene
97.5% (Telone II)
93.6% (Telone EC)
1-3 dichloropropene + chloropicrin
81.2% + 16.5% (Telone C-17)
63.4% + 34.7% (Telone C-35)
metam sodium 42% (various brands)
4.25 F
5
7.5 gal
At least 2 weeks before
planting
18 fl oz
At planting
.34 fl oz/1,000 ft
of row
At planting
75
Apply as an in-furrow spray at planting. Only one application per season
.4 to .8 fl oz/1,000 At planting
ft of row
14
Apply as an in-furrow spray at planting; counts as a group 11 application for
resistance management purposes
Nematodes- Nonfumigant
fluopyram 15.4% + imidacloproid 22.2%
(Velum Total) (7 + insecticide group 4A)
Apply in-furrow at planting, directed on or below the seed. Also controls
thrips, leaf hoppers, and aphids (see Chapter 5). Do not exceed 0.5 pound
a.i./a imidacloprid for all seed, in-furrow, and foliar applications. See label
for plant-back restrictions.
Seed and Seedling Rot; Pythium Pod Rot
mefenoxam
+
azoxystrobin (Uniform) 390 SE (4 + 11)
azoxystrobin1
(Abound 2.08 F; various brands) (11)
mefenoxam
(Ridomil Gold GR; various brands) (4)
(Ridomil Gold SL; various brands) (4)
mefenoxam .50%
+
PCNB 10% (Ridomil Gold PC GR) (4 + 14)
Per 1,000 ft of
row:
6.5 oz
.25 pt
At planting
75
Apply in-furrow or as a 7-inch band over row at planting
12.5 to 25 lb
At planting
75
Apply in a 4-inch band
437
Number)
Amount of
Formulation
Per Acre
Minimum
Days to
Application
Schedule
Seed and Seedling Rot; Pythium Pod Rot (continued)
mefenoxam
+
PCNB 10% (Ridomil Gold PC GR) (4 + 14)
mefenoxam
(Ridomil Gold GR; various brands) (4)
(Ridomil Gold SL; various brands) (4)
azoxystrobin (Abound) 1 2.08 F (11)
Early pegging
75
Apply in an 8- to 12-inch band. Do not apply to wet foliage as foliar toxicity
may result. Use with other fungicides for late-season control of stem rot
(Sclerotium rolfsii) and Rhizoctonia stem and pod rot (Rhizoctonia spp.).
Early pegging
75
Apply in an 8- to 12-inch band. Do not apply to wet foliage as foliar toxicity
may result. Use with other fungicides for late-season control of stem rot
(Sclerotium rolfsii) and Rhizoctonia stem and pod rot (Rhizoctonia spp.).
60 and 90 days after
planting
14
Use no more than 2 applications of a group 11 fungicide per season.
Resistance management: Site-specific fungicides should be mixed or
rotated with another type of fungicide to minimize risk of developing fungal
resistance. Also controls stem rot, Rhizoctonia limb and pod rot, and leaf
spots.
50 lb/14,520
linear ft of row
Per 1,000 ft of
row:
13 oz
.5 to 1 pt
24 fl oz
Seedling Diseases—Seed Treatments
azoxystrobin + fludioxonil + mefenoxam
(Dynasty PD) 4 (11 + 12 + 4)
4 oz/100 lb seed
Seedling diseases: Apply
to conditioned, untreated
seed. Commercial
application strongly
recommended.
NA
Peanuts can be replanted immediately. Do not plant other crops within 45
days of planting treated seed.
thiamethoxam + mefenoxam +fludioxonil +
azoxystrobin
(CruiserMaxx Peanuts) 4 (MOA 4A + 11 +
12 + 4)
3 to 4 oz/100 lb
seed
See above
NA
Peanuts can be replanted immediately. See label for additional information
about plant-back restrictions. Do not make any soil or foliar application of
products containing thiamethoxam to crops grown from seed treated with
CruiserMaxx Peanuts. Also controls some early season insects; see
Chapter 5 for more information.
Sclerotinia Blight
fluazinam (Omega) 500 F (29)
1 to 1.5 pt
1 to 3 applications
according to weatherbased advisory, field
history, and scouting
30
Do not apply more than a combined total of 4 pints in a single growing
season. Contact your county Extension center for details on weather-based
Sclerotinia advisories.
boscalid (Endura) 2,3 70 WG (7)
8 to 10 oz
See above
14
Make no more than two consecutive applications per season. Contact your
county Extension center for details on weather-based Sclerotinia
advisories. Also controls leaf spots and web blotch.
1 to 3 applications
according to weatherbased advisory, field
history, and scouting.
14
Suppression only. Apply at 2-week intervals or according to advisory. FRAC
guidelines recommend no more than 2 applications of an unmixed group 7
fungicide in a 5-spray foliar disease control program. Do not apply more
than 72 fluid ounces per season. Use on cultivars that have some
Sclerotinia blight resistance, for example, Bailey. Also controls leafs spots,
web blotch, southern stem rot, and Rhizoctonia limb and pod rot; see
above.
penthiopyrad (Fontelis) 3 1.67 SC (7)
24 fl oz
fluopyram + prothioconazole
(Propulse) (7 + 3)
13.7 fl oz
season a full-season, 14day, or advisory program
14
Suppression only. Apply at 2-week intervals or according to advisory. Use
on cultivars that have some Sclerotinia blight resistance, for example,
Bailey. Also controls southern stem rot and Rhizoctonia limb rot; see
above.
Iprodione 4F
(Rovral, various brands) (2)
24 fl oz
season on a full-season,
14-day or advisory
program
10
Suppression only. Apply at 2 to 3 week intervals or according to advisory.
Apply at low pressure for a spray volume of at least 40 gal per acre. Do not
apply more than 72 fluid ounces per season. Use on cultivars that have
some Sclerotinia blight resistance, for example, Bailey.
1
2
3
4
5
QOI (group 11) fungicide. Do not apply group 11 fungicides more than 2 times in sequence or more than 3 times per season. See www.FRAC.org for
information on fungicide resistance management.
Less effective than many fungicides; more frequent application may be necessary. If using advisories, alternate or mix with more effective fungicides.
Do not apply unmixed group 7 fungicides more than 2 times in sequence. FRAC guidelines: no more than 2 applications of a group 7 fungicide per 5spray program; no more than 3 applications per >6-spray program. May be alternated with group 11 or group 3 fungicides. See www.FRAC.org for
information on fungicide resistance management.
Also suppresses CBR. See label for details.
Probably not as effective as the other fumigants against nematodes.
Further Information: 2016 Peanut Information and peanut disease control information are available at your county Cooperative Extension center.
438
Peanut Disease Management Calendar
B. B. Shew, Plant Pathology
Table 10-6B. Peanut Disease Management Calendar
Time of Year
Disease
Threshold
Management Tactics
Spring (April–June)
Tomato spotted wilt virus
(TSWV)
See TSWV risk index
Plant a resistant cultivar (Bailey, Georgia 07W, Sullivan, or Wynne); use a
high seeding rate or twin rows; plant after May 5 and before May 16; apply
an insecticide in furrow. Consider an additional post-emergence
insecticide application.
CBR (Cylindrocladium
black rot)
1% to 10% disease in this field last time peanuts
were grown
Rotate 2-4 years; avoid soybeans in rotations. Plant a resistant cultivar
(Bailey or Sugg). Consider an in-furrow fungicide application.
More than 10% disease in this field last time
peanuts were grown
Rotate 3-4 years; avoid soybeans in rotations. Plant a resistant cultivar
(Bailey or Sugg) and fumigate before planting.
R3 (beginning pods)
Rotate at least 2 years to any crop other than peanuts. Longer rotations
are preferred. Plant a partially resistant cultivar (Bailey, Sugg, Sullivan, or
Wynne).
Begin calendar sprays or advisory program. Use nozzles that give a coneshaped spray pattern. Use 12 to 24 gallons of water for spray materials
applied by ground sprayers. Use at least 5 gallons of water for materials
applied by air.
14-day program: Four to six applications suggested. Begin applications at
very early pod (R3). The first application can be delayed 2 weeks on
Bailey. Repeat applications at 14-day intervals.
Advisory: Begin applications at very early pod (R3) or at R3 + 2 weeks on
Bailey. Repeat applications when weather conditions become favorable as
determined by peanut leaf spot advisories. This schedule requires strict
adherence to the program guidelines and usually results in fewer fungicide
applications than the 14-day schedule. Contact your county Extension
center for details.
Scout fields: if 20% or more of leaflets have spots, begin a 14-day spray
program.
20% leaflets with spots
Reduce intervals between sprays when over threshold. Switch to a more
effective fungicide if late leaf spot, web blotch, or pepper spot becomes
predominant. If using advisory, switch to a 14-day spray schedule.
Southern stem rot
Mid-July or on demand
Plant a partially resistant cultivar (Bailey or Sugg). Avoid highly
susceptible cultivars. Rotate 2-4 years to non-host crops.
Use a soil fungicide or a foliar fungicide with efficacy against soil-borne
pathogens at least once from Mid-July to mid-August on resistant
cultivars, or up to 3 times on susceptible cultivars in fields with a history of
disease, or if signs and symptoms of disease are present. See leaf spots
above for application information. Using a surfactant, higher volumes of
water (15-25 gallons per acres), or spraying at night may improve control.
Sclerotinia blight
In fields with a history of disease, but less than 10%
disease: early July or according to advisory
Plant a partially resistant cultivar (Bailey). Avoid highly susceptible
cultivars. Rotate 4+ years with non-host crops.
Scout every 2 weeks or according to advisory; begin fungicide applications
if disease is seen.
In fields with a history of greater than 10% disease:
just before vines close or according to weatherbased Sclerotinia advisory
Begin fungicide applications. Using higher volumes of water (15-25
gallons per acres) may improve control. Plant a partially resistant cultivar
(Bailey). Avoid highly susceptible cultivars. Rotate 4-plus years with nonhost crops.
June–Harvest
Leaf spots, Web blotch,
Pepper spot
September-October
CBR, Sclerotinia blight,
Southern stem rot
At digging
Make disease maps to decide future rotations, use of resistant varieties,
and to pinpoint areas for fumigation and fungicide application.
October–November
Nematodes
Sample areas to be planted to peanut the following
spring. See the NCDA nematode-testing lab for
sampling instructions.
Plan rotation and nematicide use based on recommendations.
439
Soybean Disease Control
Table 10-7A. Soybean Nematode Management — Nematicides
Nematodes
Nematicide and Formulation
Root-Knot, Columbia Lance
dichloropropene (Telone II)
Root-Knot, Columbia Lance,
Lesion, Soybean Cyst, Sting
abamectin (Avicta)
Amount of Formulation 1
3 gal/acre
0.15 mg per seed
Bacillus fermis (Votivo)
Apply 1 week prior to planting. Inject at least 10 inches deep. Do not use in dry,
wet, or cold soils.
Seed treatment.
Seed treatment.
Table 10-7B Soybean Foliar Disease Control — Frogeye Leaf Spot and Target Spot
Fungicide Type
and FRAC Code
Fungicide
Strobilurins (11)
6.2 to 15.4 oz
Apply fungicide at R1 to R3 and make a second application 14 to 21 days later if disease pressure is high. Do
not apply after R5 (small bean) or within 21 days of harvest. Higher rates provide longer residual activity and
may reduce the need for a second application.
6.0 to 12.0 fl oz
6 to 12 oz
1.5 to 2.4 pints
not apply within 42 days of harvest.
Others
chlorothalonil (various brands)
thiophanate-methyl
(Topsin M 70WP)
(Cercobin)
Combinations of
Strobilurins and
Triazoles (3,11)
trifloxystrobin +
prorhiconazole
(Stratego Yld)
fluoxystrobin + flutriafol
(Fortix)
azoxystrobin + difenconazole
(Quaris Top)1
Combinations of
dicarboximides
and Strobilurins
and (7, 11)
Rate Per Acre
Formulated
Remarks
0.5 to 1 lb
not apply after R5 (small bean). Higher rates provide longer residual activity and may reduce the need for a
10.9 to 21.8 fl oz second application. Thiophanate-methyl is not labeled for Asiatic soybean rust.
10 oz
Apply at R1 to R3 as a preventative or curative spray and 14 to 21 days later if disease pressure is high. Do
not apply after R5 or within 21 days of harvest.
4 to 6 oz
10 to 14 oz
Apply at R1 to R3 as a preventative or curative spray and 14 to 21 days later if rust is expected. Do not apply
after R6 or within 30 days of harvest. Make no more than two applications of materials containing azoxystrobin
or difenconazole per year.soybean per season. Corn or wheat may be planted within 180 days of last
application; do not plant other crops with 360 days of last application.
tetraconazole (7.48) +
azoxystrobin (9.35 %)
(Affiance)
10.0 to 14.0 fl oz
Approach Prima
5.0 to 6.8 fl oz
Fluxapyroxad (14.3 %) +
Pyraclostrobin (.28.6 %)
4.0 to 8.0 fl oz
Further Information
Frogeye Leaf Spot of Soybean, North Carolina Cooperative Extension Service, http://www.ces.ncsu.edu/depts/pp/notes/Soybean/soy003/soy003.htm
Using Foliar Fungicides to Manage Soybean Rust. http://www.oardc.ohio-state.edu/SoyRust/index.htm
Table 10-7C. Soybean Foliar Disease Control — Asiatic soybean rust
Fungicide type and
FRAC Code
Fungicide
Strobilurins (11)
6.2 to 15.4 oz
6.0 to 12.0 fl oz
Rate Per Acre Formulated
6 to 12 fl oz
Remarks
Apply at R1 to R3 as a preventative spray and 14 to 21 days later if rust is expected. Do not apply
after R5 or within 21 days of harvest. Make no more than two applications to soybean per season.
Apply at R1 to R3 as a preventative spray and 14 to 21 days later if disease pressure remains
high. Do not apply after R5 or within 21 days of harvest. Make no more than two applications to
soybean per season
Apply at R1to R3 as a preventative spray and 14 to 21 days later if rust is expected. Do not apply
after R5 or within 21 days of harvest. Make no more than two applications to soybean per season.
440
Table 10-7C. Soybean Foliar Disease Control — Asiatic soybean rust
Fungicide type and
FRAC Code
Fungicide
Triazoles (3)
cyproconazole (Alto)
2.75 to 4 fl oz
Apply at R1 to R3 as a preventative or curative spray and 14 to 21 days later if rust is expected.
Use higher rates if rust is present in field. Do not apply after R6 or within 21 days of harvest. Make
no more than two applications of cyproconazole to soybean per season. Corn or wheat may be
planted within 180 days of last application; do not plant other crops within 360 days of last
application.
flutriafol (Topguard)1
7 oz
Do not apply within 21 days of harvest. Make no more than two applications of flutriafol to soybean
per season. Plant-back restrictions for all crops except soybean is 120 days after last application.
8.2 to 9.6 oz
Use higher rates if rust is present in field. Do not apply within 30 days of harvest. Make no more
than two applications of metconazole to soybean per season. Root crops and leafy vegetables
may be planted within 120 days of application; crops other than soybean may be planted within 12
months of last application.
myclobutanil (Laredo EC/EW)
4 to 8 oz
no more than two applications of myclobutanil to soybean per season. Most vegetable crops can
be planted immediately after soybean harvest, but observe a 30-day plant-back restriction with
some other crops.
propiconazole (Tilt, Propimax,
Bumper)
4 to 8 oz
no more than two applications of propiconazole-containing materials to soybean per season.
tetraconazole (Domark)
4 to 5 oz
Apply at R1 to R5 as a preventative or curative spray if rust is expected. A second application of
another fungicide may be required if disease pressure is high. Use higher rates if rust is present in
field. Do not apply after R5 or within 22 days of harvest. Make no more than two applications of
tetraconazole per season. Peanut, soybean and sugar beets can be planted immediately after the
last application; small grains (barley, buckwheat, millet, oats, rice, rye, triticale, and wheat) and
sugarcane can be planted 45 days after the last application; all other crops can be planted 120
days after the last application.
4 fl oz
Do not apply after R6 or within 30 days of harvest. Make no more than three applications of
materials containing triazoles per year. Any crop not listed on the label may be planted within 120
days of last application.
2.5 to 3 fl oz
Do not apply after R6 or within 30 days of harvest. Make no more than three applications of
materials containing triazoles per year. Any crop not listed on the label may be planted within 30
days of last application.
azoxystrobin +
difenconazole(Quadris Top)
10 to 14 fl oz
Do not apply after R6 or within 30 days of harvest. Make no more than two applications of
materials containing azoxystrobin or cyproconazole per year. Make no more than two applications
of cyproconazole to soybean per season. Corn or wheat may be planted within 180 days of last
application; do not plant other crops with 360 days of last application.
5 to 6 fl oz
Apply at R1 to R3 as a preventative or curative spray and 14 to 21 days later if disease pressure is
high. Do not apply after R5 or within 21 days of harvest.
prothioconazole + trifloxystrobin
(Stratego Yld)
4.0 to 4.65 fl oz
high. Do not apply after R5 or within 21 days of harvest. Make no more than three applications.
pyraclostrobin + metconazole
Headline AMP
9.6 to 11.9 fl oz
Use higher rates if rust is present in field. Use only nonionic surfactants if adjuvants are needed.
Do not apply within 30 days of harvest. Make no more than two applications of pyraclostrobin or
metconazole to soybean per season. Root crops and leafy vegetables may be planted within 120
days of last application; crops other than soybean may be planted within 12 months of last
application.
trifloxystrobin + propiconazole
(Stratego)
10 fl oz
tebuconazole (Orius, Uppercut)
Combinations of
Strobilurins and
Triazoles (3,11)
fluoxastrobin + flutriafol
(Fortix)
Trifloxystrobin +
prothioconazole
(Stratego Yld)
Approach Prima
tetraconazole (7.48) +
azoxystrobin (9.35 %) (Affiance)
Combinations of
dicarboximides and
Strobilurins (7, 11)
Fluxapyroxad (14.3 %) +
Pyraclostrobin (.28.6 %)
(Priaxor)
Nitrile (M4)
chlorothalonil (various brands)
Rate Per Acre Formulated
4.0 to 4.65 fl oz
Remarks
high. Do not apply after R5 or within 21 days of harvest. Make no more than two applications of
materials containing propiconazole per year.
Apply at early flowering or prior to disease development. Repeat applications at 14 -21 day
intervals. Do not make more than two sequential applications. Do not apply within 21 days of
harvest.
5 -6.8 fl oz
10.0 – 14.0 fl oz
4.0 -8.0 fl oz
1.5 to 2.4 pints
Apply fungicide at R1 to R3 and make a second application 7 to 14 days later. Do not apply within
42 days of harvest.
441
Relative Fungicide Efficacy for Soybean Foliar Diseases
The North Central Regional Committee on Soybean Diseases and the Regional Committee for Soybean Rust Pathology (NCERA-212
and NCERA-208) have developed the following information on foliar fungicide efficacy for control of major foliar soybean diseases in the
United States. Efficacy ratings for each fungicide listed in the table were determined by field-testing the materials over multiple years and
locations by the members of the committee. Efficacy ratings are based upon level of disease control achieved by product, and are not
necessarily reflective of yield increases obtained from product application. Efficacy depends upon proper application timing, rate, and
application method to achieve optimum effectiveness of the fungicide as determined by labeled instructions and overall level of disease in
the field at the time of application. Differences in efficacy among fungicide products were determined by direct comparisons
among products in field tests and are based on a single application of the labeled rate as listed in the table, unless otherwise
noted. Table includes systemic fungicides available that have been tested over multiple years and locations. The table is not
intended to be a list of all labeled products1. Efficacy categories: NR=Not Recommended; P=Poor; F=Fair; G=Good; GE=Good to
Excellent (Very Good); E=Excellent; NL = Not Labeled for use against this disease
Table 10-7D. Relative Fungicide Efficacy for Soybean Foliar Diseases
1
Product/
Trade name
Rate/A
(fl oz)
Aerial web blight
Anthracnose
Brown spot
Cercospora leaf blight2
Frogeye leaf spot3
Phomopsis/Diaporthe (Pod
and stem blight)
Soybean rust
White mold4
Disease
Azoxystrobin 22.9%
Quadris 2.08 SC
6.0 to 15.5
GE
GE
G
F
GE
ND6
G to GE
P
14 days
Fluoxastrobin 40.3%
Aftershock 480 SC
Evito 480 SC
2.0 to 5.7
GE
G
G
ND6
GE
ND6
ND6
NL
R5
(beginning
seed)
30 days
Picoxystrobin
Aproach 2.08 SC
6.0 to 12.0
GE
G
G
ND6
GE
ND6
G
ND6
14 days
6
Harvest
restriction5
Headline 2.09 EC/SC
6.0 to 12.0
GE
GE
G
F
GE
ND
G to GE
NL
21 days
Cyproconazole 8.9%
Alto 100SL
2.75 to 5.5
ND6
ND6
GE
ND6
F
ND6
GE
NL
30 days
Flutriafol 11.8%
Topguard 1.04 SC
7.0 to 14.0
ND6
GE
GE
F
GE
ND6
E
G
21 days
Propiconazole 41.8%
Tilt 3.6 EC
Multiple Generics7
2.0 to 4.0
P
GE
G
NL
F
NL
GE
NL
R5
(beginning
seed)
Proline 480 SC8
2.5 to 4.3
NL
NL
NL
NL
GE
NL
GE
G
21 days
GE to E
G
R5 (beginning
seed)
G
G
21 days
NL
G
21 days
Tetraconazole 20.5%
Domark 230 ME
4.0 to 5.0
NL
GE
GE
F
GE
MBC
Thiophanates
Group 1
Thiophanate-methyl
Topsin-M
Multiple Generics
0.0 to 20.0
ND
ND
ND
F
GE
SDHI Carboximides
Group 7
DMI Triazoles
Group 3
QoI Strobilurins
Group 11
Class
Fungicide(s)
Boscalid 70%
Endura 0.7 DF
3.5 to 11.0
ND6
NL
GE
ND6
P
442
ND6
NL
Table 10-7D. Relative Fungicide Efficacy for Soybean Foliar Diseases
1
2
3
4
5
6
7
8
9
Soybean rust
White mold4
GE
NL
14 days
ND
G
ND
GE
NL
21 days
G
F
GE
ND6
GE
NL
R6
F
GE
ND6
F
ND6
ND6
NL
30 days
E
GE
E
F
GE
ND6
E
ND6
21 days
10.0
G to
GE
GE
G
F
GE
ND6
GE
NL
21 days
4.0 to 4.65
GE
GE
GE
F
GE
ND6
GE
NL
21 days
Product/
Trade name
Rate/A
(fl oz)
Azoxystrobin 18.2%
Difenconazole 11.4%
Quadris Top 2.72 SC
8.0 to 14.0
ND
6
ND
6
ND
Azoxystrobin 7.0%
Propiconazole 11.7%
Avaris 1.66 SC
Quilt 1.66 SC
HM-0812 1.66 SC
14.0 to 20.5
ND
ND
G
Azoxystrobin 13.5%
Propiconazole 11.7%
Quilt Xcel 2.2 SE
10.5 to 21.0
E
GE
Fluoxastrobin 18.0%
Tebuconazole 25.0%
Evito T 3.99 F
4.0 to 6.0
ND6
Fluxapyroxad 14.33%
Priaxor 4.17 SC
4.0 to 8.0
Propiconazole 11.4%
Stratego 250 EC
Stratego YLD 4.18 SC9
6
Cercospora leaf blight2
6
Brown spot
ND
Anthracnose
GE
Aerial web blight
Phomopsis/Diaporthe (Pod
and stem blight)
Disease
Frogeye leaf spot3
Mixed mode of action
Class
Fungicide(s)1
ND
6
Harvest
5
restriction
Multiple fungicides are labeled for soybean rust only, powdery mildew, and alternaria leaf spot, including tebuconazole (multiple products) and Laredo
(myclobutanil). Contact fungicides such as chlorothalonil may also be labeled for use.
Cercospora leaf blight efficacy relies on accurate application timing, and standard R3 application timings may not provide adequate disease control.
Fungicide efficacy may improve with later applications.
Fungicides with a solo or mixed QoI mode of action may not be effective in areas where QoI-resistance has been detected in the fungal population that
causes frogeye leaf spot.
White mold efficacy is based on an R1 application timing, and lower efficacy is obtained at an R3 application timing or if disease symptoms are already
present at the time of application.
Harvest restrictions are listed for soybean harvested for grain. Restrictions may vary for other types of soybean (edamame, etc.) and soybean for other
uses such as forage or fodder.
Insufficient data is available at this time to make statements about efficacy of these products for diseases listed in the table.
Multiple generic products containing this mode of action may also be labeled in some states.
Proline has a supplemental label (2ee) for soybean, only for use on white mold in IL, IN, IA, MI, MN, NE, ND, OH, SD, WI. A separate 2ee for NY exists
for white mold.
Stratego YLD has a supplemental label (2ee) for white mold on soybean only in IL, IN, IA, MI, MN, NE, ND, OH, SD, WI.
Many products have specific use restrictions about the amount of active ingredient that can be applied within a period of time or the amount of sequential
applications that can occur. Please read and follow all specific use restrictions prior to fungicide use. This information is provided only as a guide. It is the
responsibility of the pesticide applicator by law to read and follow all current label directions. Reference to products in this publication is not intended to be an
endorsement to the exclusion of others that may be similar. Persons using such products assume responsibility for their use in accordance with current
directions of the manufacturer. Members or participants in the NCERA-212 or NCERA-208 group assume no liability resulting from the use of these products.
443
Tobacco Disease Control
A. L. Mila, Plant Pathology
Follow manufacturer’s label in all cases.
Table 10-8A. Tobacco Disease Control — Nematode Control
Amount of
Formulation Per Acre
Waiting Period Before
Planting1 (Days)
Fumigants
6 gal
21
Multipurpose Fumigants
chloropicrin 98% (Chlor-O-Pic 100,
Chloropicrin 100)
chloropicrin 85% (Pic Plus Fumigant)
3 gal
4 gal
Nematicide
dichloropropene + chloropicrin
(Telone C-17)
(Telone C-35)
1
Rates are for in-row injection. Where labeled, broadcast rates are usually 50%
to 100% more than in-row rates. Apply fumigants and multi-purpose fumigants
at a depth of 6 to 8 inches and form a high, wide bed immediately for a final
depth of 12 to 14 inches. Apply only when the soil temperature is above 55
degrees F and soil is moist but not wet. Should soil become wet for an extended
time following applications, a longer waiting period before transplanting may be
necessary to avoid fumigant injury.
21
21
10.5 gal
12 gal
Read and follow product label directions concerning worker reentry periods.
Table 10-8B. Tobacco Disease Control — Field Blue Mold, Target Spot, and Frog-eye Leafspot Control
Material (FRAC Code)1
azoxystrobin (Quadris) (11)
Rate Per Acre
(Formulated)
6 to 12 fl oz
Method of Application
Apply on a 7- to 14-day interval with sufficient water volume for adequate coverage and canopy penetration. May be
applied up to day of harvest. Do not tank mix with thiodan.
Application directions for blue mold: Applications should begin prior to disease development or at first indication of
blue mold in the area. If blue mold is present in the field, apply dimethomorph prior to Quadris applications.
Blue Mold Only (FRAC Code)1
acibenzolar-S-methyl (Actigard) (21)
aluminum tris (O-ethyl phosphate)
(Aliette WDG) (33)
Mandipropamid (Revus) (40)
0.5 oz
2.5 to 4 lb
Apply immediately after transplanting and continue on a 7- to 10-day schedule. Begin with a minimum spray volume
of 20 gallons per acre, and increase by 20 gallons per acre weekly to a maximum of 100 gallons per acre. The pH of
spray solution should not be less than 6.0.
8 fl oz
Begin applications prior to disease development and continue on a 7- to 10- day schedule. Revus can be tank mixed
with another fungicide of different FRAC Code. No more than 2 consecutive applications before switching to another
mode of action fungicide. No more than 32 fluid ounces per season. Do not apply within 7 days of harvest.
dimethomorph
(Acrobat 50WP)
(Forum)
(15)
2 to 8 oz
2 to 8 oz
mancozeb (Dithane Rainshield) (M)
1.5 to 2 lb
Mefenoxam
(Ridomil Gold) EC, SL
(Ridomil Gold) WSP
(Ultra Flourish) 2 E
(4)
0.5 to 1 pt
0.5 to 1 lb
1 to 2 pt
Presidio (43)
1
Begin applications after plants reach a height of 18 inches. Apply on a preventative schedule when blue mold
threatens. Make up to two applications on a 10-day schedule. Apply in a minimum of 20 gallons of water per acre.
4 fl oz
Increase rate and spray volume as crop size increases. MUST be used in a tank mix with another fungicide active
against blue mold. Refer to the partner labeling for rates, application method, and restrictions.
Use only if there is a threat of metalaxyl-insensitive blue mold. Mix 1.5 to 2 pounds per 100 gallons per acre. Spray
weekly for complete coverage. Discontinue when threat of blue mold no longer exists. In flue-cured tobacco, do not
spray after first button or within 21 days of harvest. In burley, do not spray within 30 days of harvest.
For mefenoxam-sensitive strains of the blue mold fungus, apply preplant in a minimum of 15 gallons of water per
acre. Incorporate in the top 2 to 4 inches of soil and form beds. Use highest rate for burley tobacco. For prolonged
control, especially in burley, apply a supplemental soil application of either 0.5 pints per acre Ridomil Gold EC, or 0.5
pound per acre Ridomil Gold WSP, or 1 pint Ultra Flourish 2 E at lay-by or the last cultivation. Do not make the
supplemental application if more than the highest rate was applied preplant.
MUST be used in a tank mix with another fungicide active against blue mold. No more than 2 foliar applications per
season.
To prevent resistance in pathogens, alternate fungicides within a group with fungicides in another group. Fungicides in the “M” group are generally
considered “low risk” with no signs of resistance developing to the majority of fungicides.
Table 10-8C. Tobacco Disease Control — Black Shank, Granville Wilt, and Black Root Rot Control
Material
chloropicrin 98%
(Chlor-O-Pic 100, Chloropicrin 100)
chloropicrin 85% (Pic Plus Fumigant)
dichloropropene + chloropicrin
(Telone C-17)
(Telone C-35)
Amount of
Formulation Per Acre
Waiting Period Before
Planting (Days)
3 gal
4 gal
21
10.5 gal
12 gal
21
1 to 3 pt
1 to 3 lb
2 to 6 pt
0
0
0
4 fl oz
0
Rates are for in-row injection. Where labeled, broadcast rates are usually 25% to 100%
more than in-row rates. Apply multipurpose fumigants to a depth of 6 to 8 inches and
form a high, wide bed immediately. Apply only when the soil temperature is above 55
degrees F and soil is moist but not wet. Should soil become wet for extended time
following applications, a longer waiting period before transplanting may be necessary to
avoid fumigant injury. Use with Ridomil for black shank control.
Black Shank Only (FRAC Code)1
Mefenoxam
(Ridomil Gold) EC, SL
(Ridomil Gold) WSP
(Ultra Flourish) 2 E (4)
Presidio (43)
1
Use in combination with crop rotation and resistant varieties where applicable. For
prolonged control apply either 1 pint Ridomil Gold EC or SL, 1 pound Ridomil Gold WSP,
or 2 pints Ultra Flourish 2 E just before transplanting followed by either 0.5 to 1 pint Gold
EC, or 0.5 to 1 pound Gold WSP, or 1 to 2 pints Ultra Flourish 2 E at first cultivation and
at lay-by. Also, control nematodes for best results.
No more than 2 soil applications per season. Applications cannot be consecutive.
Alternate with another fungicide of different mode of action.
444
Table 10-8D. Tobacco Disease Control — Tobacco Seedling Disease Control
DISEASE
Rate
Blue Mold; Anthracnose
ferbam (Carbamate) 76 WP(M)
DO NOT USE IN GREENHOUSES
4 lb/100 gal water
Spray when plants are the size of a dime and repeat twice a week until plants are free of blue mold
are assured for transplanting, usually 8 to 12 applications. Thoroughly cover foliage and spray to
point of runoff.
0.5 lb/50 gal water
Apply 3 gallons of spray solution per 1,000 square feet for small plants. Increase the volume as the
plants grow to a maximum of 12 gallons per 1,000 square feet. Apply preventatively or at the first
sign of blue mold. Apply every 5 to 7 days, and do not exceed two applications. After application,
wait 24 hours before applying any material over top. Apply insecticides that require a wash down to
the soil prior to Alliete.
Blue Mold
aluminum tris (O-ethyl phosphonate)
(Aliette WDG) (33)
Blue Mold; Anthracnose; Damping-Off (Rhizoctonia); Stem Rot (Rhizoctonia); Target Spot
mancozeb (Dithane Rainshield) (M)
1 lb/100 gal water
(outdoor plant bed)
Begin sprays when seedlings are quarter size: For outdoor beds, mix 1 tablespoons per gallon
water, apply 3 to 5 gallons per 900 sqare feet every 5 to 7 days.
0.5 lb/100 gal water
(greenhouse and float-bed systems)
For greenhouse and float systems, mix 1 teaspoon per gal water, apply 3 to 12 gallons per 1,000
square feet every 5 to 7 days. Use low gallonage on small plants and higher gallonage on larger
plants. Do not contaminate float water with mancozeb.
0.14 oz (4ml)/1000 ft2
(equal to 6 fl oz/acre)
Use enough water for thorough coverage (recommend 5 gallons per 1,000 square feet or more).
Make ONLY ONE application prior to transplanting.
5 gal/100 sq yd of bed
Spray plants within 24 hours of pulling.
Stem Rot (Rhizoctonia); Target Spot
azoxystrobin (Quadris) (11)
Mosaic
milk (whole or skim)
OR
dry skim milk
5 lb in 5 gal water/100 sq yd
soap OR milk (skim or whole)
Wash hands with soap or dip hands every 20 minutes while pulling and transplanting to field.
dry skim milk
1 lb in 1 gal water
Pythium Root Rot
etridiazole (Terramaster) 4 EC (14)
1.4 oz/100 gal float water
Apply at least 2 to 3 weeks after seeding. Mix thoroughly in the float water. May be used
preventively or curatively. A second application may be made, but no later than 8 weeks after
seeding.
Wildfire; Angular Leafspot (Burley Tobacco); Blue Mold
streptomycin (sulfate) Agri-Mycin 17
(25)
1
Spray 200 ppm using 5 gal/100 sq yd, Spray or drench when plants are in two-leaf stage and repeat once a week for five sprays. Prepare
Drench 100 ppm using 10 gal/100 sq yd the solution by mixing 2 (200 ppm) or 1 (100 ppm) teaspoon of streptomycin (17% to 21%) per
gallon of water.
Table 10-8E. Tobacco Disease Control of Tomato Spotted Wilt (TSWV) — Virus suppression
acibenzolar (Actigard 50W)
(21)
Rate
0.5 oz/25,000 to 50,000 plants
(sprayed over the top)
OR
10 to 25 ppm (added to the float
water)
0.5 oz/acre
imidacloprid (Admire 2F)
(4A)
1.8 oz/1,000 plants
imidacloprid (Admire Pro)
(4A)
0.8 oz/1,000 plants
Imidacloprid (several
commercial products) (4A)
Look at formulation and read
label of the specific product
acibenzolar (Actigard 50W)
+
imidacloprid (21 + 4A )
see above
1
Waiver of liability must be signed to obtain label. Apply to trays or flats 5 to 7 days before transplanting. If
sprayed over the top, rinse it off into potting soil. Apply only with calibrated boom sprayer to ensure no overlap.
If applied to float water, ensure water is circulated uniformly to all tobacco plants. For better results, dilute Actigard
in a small volume of water first, and then add this volume to the float water.
Use lower rate in areas with moderate TSWV risk and highest in areas with severe TSWV risk.
Up to 3 field applications in 10-day increments may be made starting 10 days after the greenhouse application.
Begin applications after plants reach a height of 18 in.
Apply to trays IN THE GREENHOUSE 3 to 5 days prior to transplanting. Mix with water prior to application; do not
add wetting agents or defoamers, and do not use in combination with other pesticides. Immediately after application,
wash the material off the plants to transfer it to the potting soil. Observe worker protection standards for greenhouse
application.
See comments above for both products. Apply Actigard first, then imidacloprid. Tank mixing has not been
determined to be safe.
445
Turfgrass Disease Control
J. P. Kerns and E. L. Butler, Plant Pathology Extension
When more than one brand name exists for an agricultural chemical, the brand name that first came onto the market is listed first.
Otherwise, brand names are listed in alphabetical order. The order in which brand names are given is not an indication of a
recommendation or criticism. Products marked with an asterisk are not labeled for home lawn use.
Table 10-9. Turfgrass Disease Control
(oz/1,000 sq ft)2
Application
Interval (days)3
1.8 to 3.25
2 to 3.6
4 to 5.5
3 to 5
6 to 8
7 to 14
7 to 14
14
7 to 14
14
2 to 3.6
4 to 5.4
7 to 14
14
chlorothalonil + azoxystrobin (Renown) 5.16 SC*
2.5 to 4.5
10 to 14
chlorothalonil + fluoxastrobin (Fame C) 4.25 SC*
3 to 5.4
7 to 14
chlorothalonil + thiophanate-methyl (Spectro) 90 WDG*
2 to 5.76
7 to 14
chlorothalonil + triticonazole (Reserve) 4.79 SC*
3.2 to 5.4
14 to 28
Disease
Fungicide and Formulation1
Algae
(Cyanobacteria)
chlorothalonil*
(Daconil) 82.5 WDG
(Daconil Weather Stik, Legend) 6 F
(Daconil Zn) 4.16 F
chlorothalonil + acibenzolar-S-methyl (Daconil Action) 6.1 F*
fluazinam (Secure) 4.17 SC*
fluxapyroxad (Xzemplar) 2.47 SC
mancozeb*
(Fore) 80 WP
(Dithane, Pentathlon) 75 DF
(Pentathlon) 4 LF
(Protect) 75 WP
(Wingman) 75 WP
mancozeb + copper hydroxide (Junction) 60 DF*
Anthracnose
(Colletotrichum cereale)
azoxystrobin
(Heritage, Strobe) 50 WG
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
azoxystrobin + acibenzolar-S-methyl (Heritage Action) 51 WG*
azoxystrobin + chlorothalonil (Renown) 5.16 SC*
azoxystrobin + difenoconazole (Briskway) 2.7 SC*
azoxystrobin + propiconazole (Headway)
1.4 ME
1.06 G
azoxystrobin + tebuconazole (Strobe T) 2.67 SC*
chlorothalonil*
(Daconil Ultrex) 82.5 WDG
(Daconil Zn) 4.16 F
(Chlorothalonil 500ZN) 4.17 F
(Chlorothalonil 720SFT) 6 F
(Chlorothalonil, Chlorostar) 82.5 DF
(Pegasus) 6 L
(Pegasus) 82.5 DF
(Pegasus HPX) 6 F
chlorothalonil + iprodione + thiophanate-methyl + tebuconazole (Enclave) 5.3 F*
0.5
14
0.21 to 0.26
14 to 28
6
6
10
6
6
7 to 14
refer to label
refer to label
7 to 14
refer to label
2 to 4
7 to 14
0.2 to 0.4
1 to 2
2 to 4 lbs
0.38 to 0.77
14 to 28
14 to 28
14 to 28
14 to 28
0.2 to 0.4
14 to 28
2.5
4.5
7 to 10
14 to 21
0.3 to 0.725
14
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
14 to 21
2.75 to 5
3 to 3.6
3.6 to 5.5
4.4 to 5
5.3 to 8
3 to 5
7.9
2.12 to 3.5
5.5
2.8 to 3.2
3.6 to 5.5
3.25 to 5
3.6 to 5.5
7 to 14
7 to 14
14
7 to 14
14
7 to 14
14
7 to 14
14
7 to 14
7 to 14
7 to 14
7 to 14
3 to 3.6
3.6 to 5.4
7 to 14
14
3 to 5.9
14 to 28
3 to 4
7 to 8
14 to 21
28
chlorothalonil + propiconazole (Concert) 4.3 SC*
4.5 to 8.5
7 to 28
chlorothalonil + propiconazole + fludioxonil (Instrata) 3.59 SC*
2.75 to 6
14 to 28
chlorothalonil + thiophanate-methyl*
(Consyst) 67 WDG
(Peregrine) 67 WDG
(Spectro) 90 WDG
(TM/C) 67 WDG
2 to 8
2 to 8
3.72 to 5.76
2 to 8
7 to 14
14
7 to 14
14 to 21
fenarimol (Rubigan) 1 AS*
1.75 to 3.5
30
0.5
14
fludioxonil (Medallion) 50 WP
0.25 to 0.5
14
446
(oz/1,000 sq ft)2
Application
Interval (days)3
0.18 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
fluoxastrobin + myclobutanil (Fame M) 3.9 SC
0.25 to 1
14 to 28
fluoxastrobin + tebuconazole (Fame T) 4 SC*
0.45 to 0.9
21 to 28
flutolanil + thiophanate-methyl (SysStar) 80 WDG
2 to 3
14 to 30
iprodione + thiophanate-methyl*
(26/36) 3.8 F
(Dovetail) 3.8 F
2 to 4
1 to 4
14 to 21
14 to 21
4 to 7
refer to label
0.28 to 0.37
14 to 21
Disease
Anthracnose (continued)
fluoxastrobin (Fame)
4 SC
0.25 G
iprodione + trifloxystrobin (Interface) 2.27 SC*
metconazole (Tourney) 50 WDG
mineral oil (Civitas) + proprietary pigment (Civitas Harmonizer)*
(8 to 32) + (1 to 4)
7 to 21
1.2
14 to 21
0.3 to 0.5
14
5
7
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
0.88
4
7 to 14
7 to 14
propiconazole (Banner MAXX, Kestrel, Propiconazole, Savvi, Strider) 1 ME
1 to 2
14 to 28
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
pyraclostrobin + boscalid (Honor) 28 WG*
0.55 to 1.1
14 to 28
pyraclostrobin + fluxapyroxad (Lexicon Intrinsic) 4.17 SC
0.34 to 0.47
14 to 28
3 lbs
14 to 28
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
(Skylark, Tebuconazole) 3.6 F
0.6 to 1.1
1 to 2
0.6
21
14 to 28
28
thiophanate-methyl
(3336) 50 WP or 4 F
(3336 Plus) 2 F
(SysTec 1998, T-Bird, TM) 85 WDG
(3336) 2 G
(SysTec 1998, T-Bird, TM) 4.5 L
2 to 6
2 to 8
0.67 to 1.3
3 to 9 lbs
1 to 2
14
14 to 28
14
14
14
myclobutanil (Eagle, Myclobutanil, Siskin) 20 EW
penthiopyrad (Velista) 50 WG
phosphorous acid (Jetphiter) 5.41 F
pyraclostrobin (Insignia)
20 WG
2 SC
pyraclostrobin + triticonazole (Pillar) 0.81 G
triadimefon (Bayleton) 50 WSP
trifloxystrobin (Compass) 50 WDG
trifloxystrobin + triadimefon
(Armada) 50 WP
(Tartan) 2 SC*
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
(Triton Flo) 3 F
triticonazole + chlorothalonil (Reserve) 4.79 SC*
Brown Ring Patch
azoxystrobin (Heritage)
(Rhizoctonia circinata var. circinata) 50 WG
0.8 TL
0.31 G
1
30 to 45
0.15 to 0.25
14 to 21
0.6 to 1.2
1 to 2
14 to 28
14 to 28
0.5 to 1
0.15 to 0.225
0.41 to 1.1
14 to 28
14 to 28
14 to 28
3.2 to 5.4
14 to 28
0.2 to 0.4
1 to 2
2 to 4 lbs
14 to 28
14 to 28
14 to 28
0.2 to 0.4
14 to 28
0.5 to 0.725
14 to 28
azoxystrobin + propiconazole (Headway) 1.4 ME
1.5 to 3
14 to 28
0.25 to 1
14 to 28
0.45 to 0.9
21 to 28
0.5
14
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
0.88
4
7 to 14
7 to 14
pyraclostrobin (Insignia) 2 SC
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
447
0.7
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
0.6 to 1.1
1 to 2
0.6
21
14 to 28
28
(oz/1,000 sq ft)2
Application
Interval (days)3
triticonazole
(Trinity) 1.7 SC
(Triton FLO) 3 F
1 to 2
0.5 to 1.1
14 to 28
14 to 28
3.2 to 5.4
14 to 28
0.2 to 0.4
1 to 2
2 to 4 lbs
0.38 to 0.77
14 to 28
14 to 28
14 to 28
14 to 28
0.2 to 0.4
14 to 28
2.5
4.5
14
14 to 21
0.3 to 0.725
14 to 28
0.75 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
14 to 21
3 to 4
5 to 7
7 to 10
7 to 10
1.8 to 3.23
3.7 to 5
2 to 3.6
4 to 5.5
3 to 5
6 to 8
3 to 5
7.9
2.12 to 3.5
5.5
1.8 to 3.2
2 to 3.6
1.82 to 3.25
2 to 3.6
7 to 14
14
7 to 14
14
7 to 14
14
7 to 14
14
7 to 14
14
7 to 14
7 to 14
7 to 14
7 to 14
2 to 3.5
4 to 5.4
7 to 14
14
1.5 to 5.9
14 to 28
3 to 4
7 to 8
14 to 21
28
3 to 5.5
5.5 to 8.5
7 to 14
14 to 28
2.75 to 6
14 to 21
(Spectro) 90 WDG
(TM/C) 67 WDG
3 to 5.76
2 to 8
14 to 21
14 to 21
1.5
7 to 14
0.5
14
0.2 to 0.25
0.5
7
14
0.09 to 0.36
1.2 to 4.6 lbs
14 to 28
14 to 28
0.25 to 1
14 to 28
0.45 to 0.9
21 to 28
0.21 to 0.26
14 to 21
flutolanil (Prostar) 70 WP, 70 DG
1.5 to 3
14 to 21
2 to 3
14 to 21
iprodione 26GT, Iprodione Pro, IPro, Raven* 2 F, 2 SC, 2 SE
3 to 4
14 to 28
(26/36) 3.8 F
(Dovetail) 3.8 F
2 to 4
1 to 4
14 to 21
14 to 21
3 to 5
refer to label
4
4
4
7
10
7 to 14
Disease
Brown Ring Patch (continued)
Brown Patch
(Rhizoctonia solani)
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
1.4 ME
1.06 G
chloroneb (Teremec)*
65 SP
2.9 F
chlorothalonil*
(Daconil Zn) 4.16 F
(Pegasus) 6 L
(Pegasus) 82.5 DF
(Pegasus HPX) 6 F
4 SC
0.25 G
mancozeb*
(Fore) 80 WP
(Dithane) 75 DF
(Protect) 75 WP
448
2 to 4
7
0.28 to 0.37
14 to 21
(8 to 32) + (1 to 4)
7 to 21
(oz/1,000 sq ft)2
Disease
Brown Patch (continued)
phosphorous acid (Jetphiter) 5.41 F
1.2
14
0.3 to 0.5
14 to 21
5
7
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
0.88
4
7 to 14
7 to 14
1 to 2
14 to 21
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
0.55 to 1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
0.6 to 1.1
1 to 2
0.6
21
14 to 28
28
thiram (Spotrete) 4 F*
3.75 to 7.5
3 to 10
0.5 to 1
15 to 30
0.1 to 0.2
0.15 to 0.25
14
21
(Armada) 50 WP
(Tartan) 2 SC*
0.6 to 1.2
1 to 2
14 to 28
14 to 28
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
(Triton Flo) 3 F
0.75 to 2
0.15 to 0.3
0.41 to 1.1
14 to 28
14 to 28
14 to 28
3.2 to 5.4
14 to 28
1
14 to 28
3.7 to 5
4 to 5.5
6 to 8
3 to 5
7.9
2.12 to 3.5
5.5
3.2
3.6 to 5.5
3.25 to 5
3.6 to 5.5
14
14
14
7 to 10
14
7 to 10
14
7 to 10
7 to 14
7 to 14
7 to 14
20 WG
2 SC
triadimefon (Bayleton) 50 WSP, 4.15 F
vinclozolin (Curalan, Touche) 50 EG*
Copper Spot
(Gloeocercospora sorghi)
Application
Interval (days)3
chlorothalonil*
(Daconil Zn) 4.16 F
(Chlorothalonil 500ZN) 6 F
(Pegasus) 6 L
(Pegasus) 82.5 DF
(Pegasus HPX) 6 F
4 to 5.4
14
2.5
14
5.9
14
3 to 4
7 to 8
14 to 21
28
5.5 to 8.5
14
(Consyst) 67 WDG
(Peregrine) 67 WDG
(Spectro) 90 WDG
(TM/C) 67 WDG
3 to 8
3 to 8
3 to 5.76
3 to 8
7 to 10
14
14
14 to 21
0.75 to 1.5
10 to 28
0.25 to 1
14 to 21
2 to 3
14 to 21
iprodione + thiophanate-methyl (26/36) 3.8 F*
2 to 4
14 to 21
mancozeb*
(Fore) 80 WP
(Dithane) 75 DF
(Pentathlon) 4 LF
(Pentathlon) 75 DF
(Protect, Wingman) 75 WP
4 to 8
4 to 8
7 to 14
4 to 8
4 to 8
7 to 14
10
7 to 14
7
7 to 14
2 to 4
7 to 14
1.2
14
0.6 to 1.1
0.6
refer to label
28
tebuconazole*
(Torque) 3.6 F
449
(oz/1,000 sq ft)2
Application
Interval (days)3
thiophanate-methyl
(3336) 50 WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
2 to 4
2 to 4
0.67 to 1.3
1.5 to 6 lbs
1 to 2
14
14 to 28
14
14
14
thiram (Spotrete) 4F*
3.75 to 7.5
3 to 10
0.5 to 1
15 to 30
1.5 to 3
2 to 4 lbs
14
14 to 28
0.75 to 1.5
14
0.18
14
3.72 to 5.76
14
0.3 to 0.5
14
20 WG
2 SC
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
0.55 to 1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
4 to 6
4 to 6
6 to 9 lbs
14
14
14
0.3 to 0.725
14 to 21
0.75 to 3
2 ot 4 lbs
7 to 28
14 to 28
0.75 to 1.5
14 to 21
boscalid* (Emerald) 70 WG
0.13 to 0.18
14 to 28
1 to 3.25
3.7 to 5
1 to 3.6
4 to 5.5
1.5 to 5
6 to 8
3 to 5
7.9
2.12 to 3.5
5.5
1.8 to 3.2
2 to 3.6
1.82 to 3.25
2 to 3.6
7 to 21
14 to 21
7 to 21
14 to 21
7 to 21
14
7 to 14
14
7 to 14
14
7 to 10
7 to 14
7 to 14
7 to 14
1 to 3.5
4 to 5.4
7 to 21
14
Disease
Copper Spot (continued)
Dead Spot
(Ophiosphaerella agrostis)
1.4 ME
1.06 G
boscalid* (Emerald) 70 WG
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
Dollar Spot
(Sclerotinia homoeocarpa)
1.4 ME
1.06 G
chlorothalonil*
(Daconil Ultrex) 82.5W DG
(Daconil Zn) 4.16 F
(Pegasus) 6 L
(Pegasus) 82.5 DF
(Pegasus HPX) 6 F
2.5 to 4.5
7 to 14
3 to 5.9
14 to 21
3 to 4
7 to 8
14 to 21
28
1.5 to 3
3 to 5.5
5.5 to 8.5
7 to 10
14 to 21
14 to 28
2.75 to 6
21 to 28
(Consyst) 67 WDG
(Peregrine) 67 WDG
(Spectro) 90 WDG
(TM/C) 67 WDG
2 to 8
2 to 8
3.72 to 5.76
2 to 8
7 to 21
14
14 to 21
7 to 14
0.75 to 1.5
10 to 28
0.5
14
0.18 to 0.36
2.3 to 4.6 lbs
14 to 21
14 to 21
0.25 to 1
14 to 21
0.45 to 0.9
21 to 28
0.16 to 0.26
14 to 28
2 to 3
14 to 30
4 SC
0.25 G
450
(oz/1,000 sq ft)2
Application
Interval (days)3
iprodione (26GT, Iprodione Pro, IPro, Raven) 2 F, 2 SC, 2 SE*
2 to 4
14 to 28
(26/36) 3.8 F
(Dovetail) 3.8 F
2 to 4
1 to 4
14 to 21
14 to 21
2 to 5
refer to label
6 to 8
6 to 8
10 to 14
6 to 8
6 to 8
7 to 14
10
7 to 14
7
7 to 14
Disease
Dollar Spot (continued)
mancozeb*
(Fore) 80 WP
(Dithane) 75 DF
(Pentathlon) 4 LF
(Pentathlon) 75 DF
7 to 14
14 to 21
(8 to 32) + (1 to 4)
7 to 21
0.5 to 2.4
7 to 28
0.3 to 0.5
14 to 21
0.5 to 2
7 to 28
0.9
0.7
14
14
0.83 to 1.1
14 to 21
0.34 to 0.47
14 to 28
3 lbs
14 to 28
0.6 to 1.1
1 to 2
0.6
refer to label
14 to 28
28
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
2 to 4
2 to 4
0.67 to 1.3
1.5 to 6 lbs
1 to 2
14
14 to 28
14
14
14
propiconazole (Banner MAXX, Propiconazole, Savvi, Spectator) 1 ME
20 WG
2 SC
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
3.75 to 7.5
3 to 10
0.25 to 1
14 to 30
(Armada) 50 WP
(Tartan) 2 SC*
0.6 to 1.2
1 to 2
14 to 28
14 to 28
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
(Triton FLO) 3 F
1 to 2
0.15 to 0.3
0.28 to 1.1
14 to 28
14 to 28
14 to 28
3.2 to 4.5
14 to 28
1
21 to 28
0.4
2
2 to 4 lbs
28
28
14 to 28
Fairy Ring
(Basidiomycetes)
2 to 4
0.18 to 0.37
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
1.4ME
1.06 G
0.2 to 0.4
14 to 28
0.5 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
28
4.5 to 5.9
21 to 28
0.28 to 0.36
2.3 to 4.6 lbs
21 to 28
28
0.5 to 1
21 to 28
0.45 to 0.9
21 to 28
flutolanil (Prostar) 70 WP, 70 WDG
2.2 to 4.5
21 to 30
3 to 6.12
21 to 28
4 SC
0.25 G
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
451
0.37
21
0.5 to 0.7
14 to 28
1
4
7
7
(oz/1,000 sq ft)2
Application
Interval (days)3
0.9
0.7
28
28
1.1
28
0.47
28
3 lbs
14 to 28
0.6 to 1.1
1 to 2
21
28
1 to 2
14 to 21
0.2 to 0.4
1 to 2
2 to 4 lbs
0.38 to 0.77
14 to 28
14 to 28
14 to 28
14 to 28
0.2 to 0.4
14 to 28
2.5 to 4.5
10 to 14
0.5 to 0.725
14 to 21
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75
1.5
1.8 to 3.25
3.7 to 5
2 to 3.6
4 to 5.5
3 to 5
6 to 8
3 to 5
7.9
2.12 to 3.5
5.5
1.8 to 3.2
2 to 3.6
1.82 to 3.25
2 to 3.6
7 to 21
14
7 to 10
14
7 to 14
14
7 to 10
14
7 to 14
14
7 to 10
7 to 14
7 to 14
7 to 14
2 to 3.5
4 to 5.4
7 to 10
14
3 to 5.9
14 to 28
3 to 4
7 to 8
14 to 21
28
3 to 5.5
5.5 to 8.5
7 to 14
14 to 21
Disease
Fairy Ring (continued)
20 WG
2 SC
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
triadimefon (Bayleton) 50DF, 4.15 F
Gray Leaf Spot
(Pyricularia grisea)
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
1.4 ME
1.06 G
chlorothalonil*
(Daconil Zn) 4.16 F
(Pegasus) 6 L
(Pegasus) 82.5 DF
(Pegasus HPX) 6 F
2.75 to 6
10 to 14
(Consyst) 67 WDG
(Peregrine) 67 WDG
(Spectro) 90 WDG
(TM/C) 67 WDG
2 to 8
2 to 8
3.72 to 5.76
2 to 8
7 to 14
14
14
14 to 21
0.25 to 0.5
14
0.18 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
0.25 to 1
14 to 28
0.45 to 0.9
21 to 28
2 to 3
14
8
6.4 to 12.8
9 to 14
8
8
14
7 to 14
5
7
7
4 SC
0.25 G
mancozeb*
(Fore) 80 WP
(Dithane) 75 DF
(Pentathlon) 4 LF
(Pentathlon) 75 DF
(Wingman) 75 WP
myclobutanil (Eagle, Siskin) 20 EW
0.37
14
(8 to 32) + (1 to 4)
7 to 21
1.2 to 2.4
14
polyoxin D (Affirm) 11.3 WDG
0.88
7 to 14
1 to 2
14
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
20 WG
2 SC
452
(oz/1,000 sq ft)2
Application
Interval (days)3
0.55 to 1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
0.6 to 1.1
1 to 2
0.6
21
14 to 28
28
4 to 6
4 to 8
6 to 9 lbs
2.35 to 3.53
3.5 to 5
14
14 to 28
14
14
14
Disease
Gray Leaf Spot (continued)
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
thiophanate-methyl
(3336) 50 WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
0.5 to 1
14
0.15 to 0.2
0.25
14
21
0.6 to 1.2
1 to 2
14 to 28
14 to 28
0.2 to 0.4
1 to 2
2 to 4 lbs
0.38 to 0.77
14 to 21
14 to 21
14 to 21
14 to 21
0.2 to 0.4
14 to 21
2.5 to 4.5
14 to 21
0.5 to 0.725
14 to 21
1.5 to 3
2 to 4 lbs
14 to 21
14 to 21
0.75 to 1.5
14 to 21
1.8 to 3.25
3.7 to 5
2 to 3.6
4 to 5.5
3 to 5
6 to 8
3 to 5
7.9
2.12 to 3.5
5.5
1.8 to 3.2
2 to 3.6
1.82 to 3.25
2 to 3.6
7 to 21
14 to 21
7 to 21
14
7 to 21
14
7 to 10
14
7 to 10
14
7 to 10
7 to 14
7 to 14
7 to 14
2 to 3.5
4 to 5.4
7 to 21
14
3 to 5.9
14 to 21
3 to 5.5
5.5 to 8.5
7 to 14
14 to 21
2.75 to 6
10 to 21
2 to 8
2 to 8
3.72 to 5.76
2 to 8
7 to 21
14
14
14 to 21
(Armada) 50 WP
(Tartan) 2 SC*
Helminthosporium Leaf
Spot/Melting Out (Bipolaris spp.;
Drechslera spp.)
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
1.4 ME
1.06 G
chlorothalonil*
(Daconil Zn) 4.16 F
(Pegasus) 6 L
(Pegasus) 82.5 DF
(Pegasus HPX) 6 F
(Consyst) 67 WDG
(Peregrine) 67 WDG
(Spectro) 90 WDG
(TM/C) 67 WDG
0.5
14
0.25 to 0.5
14 to 21
0.18 to 0.36
2.3 to 4.6 lbs
14 to 21
14 to 21
0.25 to 1
14 to 28
0.45 to 0.9
21 to 28
4 SC
0.25 G
2 to 3
14
3 to 4
14 to 28
iprodione + thiophanate-methyl *
(26/36) 3.8 F
(Dovetail) 3.8 F
2 to 4
1 to 4
14 to 21
14 to 21
3 to 5
refer to label
453
Disease
Helminthosporium Leaf
Spot/Melting Out (continued)
mancozeb*
(Fore) 80 WP
(Dithane) 75 DF
(Pentathlon) 4 LF
(Pentathlon) 75 DF
Application
Interval (days)3
4
4
5 to 14
4
4
7 to 14
10
3 to 5
7
7 to 14
2 to 4
7 to 14
(8 to 32) + (1 to 4)
7 to 21
1.2
14
0.3 to 0.5
14
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
0.88
4
7 to 14
7 to 14
propiconazole
(Banner MAXX, Kestrel, Propiconazole, Savvi, Strider) 1 ME
1 to 2
14
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
pyraclostrobin + boscalid (Honor) 28WG*
0.55 to 1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
thiophanate-methyl
(3336) 50 WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
4 to 6
4 to 8
6 to 9 lbs
14
14 to 28
14
3.75 to 7.5
3 to 10
0.1 to 0.15
0.15 to 0.25
14
21 to 28
(Armada) 50 WP
(Tartan) 2 SC*
0.6 to 1.2
1 to 2
14 to 28
14 to 28
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
0.5 to 2
0.15 to 0.3
14 to 28
14 to 28
3.2 to 4.5
14 to 28
1
14 to 28
0..2 to 0.4
2
2 to 4 lbs
0.38 to 0.77
14 to 28
14 to 28
14 to 28
28
0.2 to 0.4
14 to 28
2.5
4.5
14
14 to 21
0.3 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
14 to 21
5
9
21 to 28
21 to 28
3 to 5.9
14 to 28
3 to 4
7 to 8
14 to 21
28
2 to 8
2 to 8
7 to 14
14
0.28 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
0.5 to 1
21 to 28
0.21 to 0.26
14 to 28
20 WG
2 SC
Large Patch (Zoysia Patch)
(oz/1,000 sq ft)2
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
1.4 ME
1.06 G
chloroneb*
(Teremec) 65 SP
(Teremec) 2.9 F
(Consyst) 67 WDG
(Peregrine) 67 WDG
4 SC
0.25
2.2
30
4
14 to 21
2 to 4
14 to 21
4
14 to 21
iprodione (26GT, Iprodione Pro, Ipro, Raven) 2 F, 2 SC, 2 SE*
454
(oz/1,000 sq ft)2
Application
Interval (days)3
Disease
Large Patch (continued)
0.37
14
2.4
28 (fall)
0.7
14 to 28
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
0.88
4
7 to 14
7 to 14
3 to 4
early fall
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
20 WG
2 SC
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
Leaf and Sheath Spot
(Rhizoctonia zeae, R. oryzae)
14 to 28
14 to 28
3 lbs
14 to 28
0.6 to 1.1
1 to 2
0.6
21
28
28
2 to 4
2 to 4
0.67 to 1.3
1.5 to 6 lbs
1 to 2
14
14 to 28
14
14
14
thiophanate-methyl + flutolanil (SysStar) 80 WDG
2 to 3
14 to 21
1 to 2
fall and spring
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
1 to 2
0.15 to 0.3
14 to 28
14 to 28
3.2 to 5.4
14 to 28
0.8 TL
0.31 G
2
2 to 4 lbs
14 to 28
14 to 28
0.2 to 0.4
14 to 28
2.5
4.5
14
14 to 21
0.5 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
1.4 ME
1.06 G
0.75 to 1.5
14 to 21
2.75 to 6
14 to 21
3 to 5.76
14 to 21
flutolanil (Prostar) 70 WDG
2.2 to 4.5
14 to 21
0.3 to 0.5
14
polyoxin D (Affirm) 11.3 WDG
0.88
7 to 14
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
20 WG
2 SC
1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
28
0.2 to 0.4
1 to 2
2 to 4 lbs
0.38 to 0.77
14 to 28
14 to 28
14 to 28
14 to 28
0.2 to 0.4
14 to 28
2.5 to 4.5
14 to 21
0.5 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
14 to 21
3 to 5.9
14 to 28
3 to 5.5
5.5 to 8.5
7 to 14
14 to 21
Pink Patch
(Limonomyces roseipelis)
1.1
0.34 to 0.47
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
1.4 ME
1.06 G
455
Disease
(oz/1,000 sq ft)2
Application
Interval (days)3
Pink Patch (continued)
0.5
14
0.18 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
1.5
21 to 28
2
21 to 28
4 SC
0.25 G
flutolanil (Prostar) 70 WP, 70 DG
3 to 4
14
2
14 to 21
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
0.55 to 1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
0.6 to 1.1
1 to 2
0.6
refer to label
14 to 28
28
0.1 to 0.15
0.2 to 0.25
14
21
0.6 to 1.2
1 to 2
14 to 28
14 to 28
20 WG
2 SC
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
(Armada) 50 WP
(Tartan) 2 SC*
triticonazole (Trinity) 1.7 EC
Pink Snow Mold/Microdochium
Patch (Microdochium nivale)
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2L
1.4 ME
1.06 G
1 to 2
14 to 28
3.2 to 4.5
refer to label
1
14 to 28
0.2 to 0.4
0.7
2
3.5
4 lbs
7 lbs
0.77
1.35
10 to 28
1 application
10-28
1 application
10 to 28
1 application
14
1 application
0.4
refer to label
2.5 to 4.5
14 to 21
0.5 to 0.725
14 to 28
1.5 to 3
5.25
2 to 4 lbs
5
10 to 28
1 application
14 to 28
1 application
0.75 to 1.5
2.4
14 to 21
1 application
5.4
21 to 28
3 to 5.9
28
7 to 8
28
8.5
14 to 28
5 to 11
late fall
6 to 8
3.72 to 5.76
1 application
14
8
4
1 application
30 (2 applications)
0.5
late fall
0.25 to 0.5
14
0.18 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
0.5 to 1
21 to 28
0.45 to 0.9
30
0.26
14 to 28
4 to 6.12
2 to 3
1 application
14 to 21
4 to 8
1 to 2 applications
(Consyst, Peregrine, TM/C) 67 WDG
(Spectro) 90 WDG
4 SC
0.25 G
456
(oz/1,000 sq ft)2
Application
Interval (days)3
(26/36) 3.8 F
(Dovetail) 3.8 F
2 to 4
1 to 4
14 to 21
14 to 21
4 to 7
1 application
6 to 8
6 to 8
10 to 14
6 to 8
14 to 42
14 to 42
14 to 42
7 to 14
2 to 4
14 to 42
0.37 to 0.44
late fall
Disease
Pink Snow Mold/Microdochium
Patch (continued)
mancozeb*
(Fore) 80 WP
(Dithane, Pentathlon) 75 DF
(Pentathlon) 4 LF
(Protect) 75 WP
(8 to 32) + (1 to 4)
7 to 21
1.2 to 2.4
prior to snow cover
PCNB (various brands)
75 WP
10 G
4F
3 to 8
80 to 160
12 to 16
28 to 42
prior to snowfall
prior to snowfall
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
0.88
4
7 to 14
7 to 14
2 to 4
fall to early spring
20 WG
2 SC
0.5 to 0.9
0.7
14 to 28
14 to 28
0.55 to 1.1
14 to 28
0.47
14 to 28
3 lbs
28
0.6 to 1.1
1 to 2
0.6
prior to snowfall
10 to 28
prior to snowfall
3 to 12
3 to 8
fall and spring
fall and spring
2 to 4
2 to 4
0.67 to 1.3
1.5 to 6 lbs
1 to 2
14
14 to 28
14
14
14
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
thiram (Spotrete)*
4F
75 WDG
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
1 to 2
60 to 90
0.2 to 0.25
1.2
2
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
(Triton Flo) 3 G
0.5 to 2
0.15 to 0.3
0.28 to 1.1
14 to 28
late fall
10 to 14
3.2 to 4.5
14 to 28
1
10 to 21
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
0.2 to 0.4
1 to 2
2 to 4 lbs
14 to 28
14 to 28
14 to 28
0.2 to 0.4
14 to 28
2.5 to 4.5
14 to 21
0.5 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
14 to 21
3 to 5.9
14 to 28
4.5 to 8.5
14 to 28
2 to 8
2 to 8
3.72 to 5.76
2 to 8
7 to 14
14
14
14 to 21
2 to 4
1 application
(Armada) 50 WP
(Tartan) 2 SC*
Powdery Mildew
(Blumeria graminis)
1.4 ME
1.06 G
(Consyst) 67 WDG
(Peregrine) 67 WDG
(Spectro) 90 WDG
(TM/C) 67 WDG
457
Disease
Powdery Mildew (continued)
4 SC
0.25 G
Application
Interval (days)3
0.18 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
0.25 to 1
14 to 28
2 to 4
7 to 14
(8 to 32) + (1 to 4)
7 to 21
1.2
14 to 28
0.3 to 0.5
14
1 to 2
14 to 28
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
0.55 to 1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
0.6 to 1.1
0.6
refer to label
28
0.5 to 1
15 to 30
0.4
2
2 to 4 lbs
0.38 to 0.77
10 to 14
10 to 14
10 to 14
10 to 14
0.2 to 0.4
10 to 14
1.4 ME
1.06 G
3
2 to 4 lbs
10 to 14
14 to 28
0.75 to 1.5
10 to 21
4
7
5 to 7
5 to 7
20 WG
2 SC
tebuconazole*
(Torque) 3.6 F
Pythium Blight
(Pythium aphanidermatum)
(oz/1,000 sq ft)2
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
chloroneb*
(Teremec) 65 SP
(Teremec) 2.9 F
3 to 5.9
7 to 14
0.45 to 0.9
14 to 21
2 to 4.5
2 to 4
10
10 to 14
1.2
14
0.18 to 0.36
2.3 to 4.6 lbs
7 to 14
14
0.5 to 1
14
0.45 to 0.9
21
fosetyl Al
(Signature, Fosetyl-Al) 80 WDG
(Signature Xtra Stressgard) 60 WDG*
(Autograph) 70 DF*
(Viceroy) 70 DF
4 to 8
2 to 6
4.6 to 9.2
4.6 to 9.1
14 to 21
7 to 21
14 to 21
14 to 21
8
8
14
8
8
5 to 14
10
5
5
7 to 14
2 to 4
5
0.28 to 0.56
0.5 to 1
12.5 to 25
0.2 to 1
10 to 21
10 to 21
10 to 14
10 to 21
1 to 2
10 to 21
5 to 10
5
4.1 to 8.2
4 to 6
4 to 8
7 to 14
7
14 to 21
14
7 to 14
3 to 4
4 to 6
7 to 14
14
1.3 to 4
7 to 21
cyazofamid (Segway) 3.33 SC*
ethazole*
(Koban) 30 WP
(Terrazole) 35 WP
fluopicolide + propamocarb (Stellar) 5.7 SC
4 SC
0.25 G
mancozeb*
(Fore) 80 WP
(Dithane) 75 DF
(Pentathlon) 4 LF
(Pentathlon) 75 DF
mefenoxam
(Subdue) 43 WSP
(Subdue MAXX, Quell) 2 ME
(Subdue) 1 GR
(Fenox, Mefenoxam) 2 AQ, 2 EC
metalaxyl (Vireo) 2 MEC
phosphorus acid
(Alude, Resyst) 3.3 F
(Jetphiter) 5.41 F
(Magellan) 4.3 F
(Vital) 4.2 F
(Vital Sign) 4.2 F
potassium phosphite (Appear) 4.1 SC
propamocarb (Banol) 6 S*
458
(oz/1,000 sq ft)2
Application
Interval (days)3
0.9
0.7
14 to 28
10 to 14
1.1
10 to 14
0.47
14
3 lbs
14
0.4
2
21 to 28
21 to 28
Disease
Pythium Blight (continued)
20 WG
2 SC
Pythium Root Dysfunction
(Pythium volutum)
50 WG
0.8 TL
0.4
21 to 28
0.45 to 0.9
14 to 21
0.27 to 0.36
3.6 to 4.6 lbs
14 to 28
14 to 28
4.5 to 5.9
14 to 28
0.5 to 1
14 to 28
0.9
0.7
14 to 28
14 to 28
1.1
14 to 28
0.47
14 to 28
3 lbs
14
0.4
2
2 to 4
0.38 to 0.77
10 to 14
10 to 14
10 to 14
10 to 14
3
2 to 4 lbs
10 to 14
14 to 28
0.75 to 1.5
10 to 21
chlorothalonil + fluoxastrobin (Fame C) 4.25 SC *
3 to 5.9
7 to 10
4.5
2 to 4
10
10 to 14
0.18 to 0.36
2.3 to 4.6 lbs
7 to 10
14
0.5 to 1
14
0.45 to 0.9
21
fosetyl Al
(Signature, Fosetyl-AI ) 80 WDG
(Autograph) 70 DF*
(Viceroy) 70 DF
4 to 8
2 to 6
4.6 to 9.2
4.6 to 9.1
14 to 21
7 to 21
14 to 21
14 to 21
6 to 8
3.5 to 5
7 to 14
7 to 28
6 to 8
7 to 14
cyazofamid (Segway) 3.33 SC*
4 SC
0.25 G
fluoxastrobin + chlorothalonil (Fame C) 4.25 SC *
20 WG
2 SC
Pythium Root Rot
(Pythium spp.)
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
1.4 ME
1.06 G
ethazole*
(Koban) 30 WP
(Terrazole) 35 WP
4 SC
0.25 G
phosphorous acid
(Vital Sign) 2.4 F
(Jetphiter) 5.41 F
potassium phosphite (Appear) 4.1 SC
propamocarb (Banol) 6 S*
Rapid Blight
(Labyrinthula spp.)
mancozeb (Fore) 80 WP*
7 to 21
3 to 5
refer to label
8
14
0.5
14
0.5 to 0.9
0.4 to 0.7
14
14 to 28
0. 55 to 1.1
14 to 28
0.34 to 0.47
14
3 lbs
14 to 28
0.15 to 0.2
0.25
14
21
trifloxystrobin + triadmefon (Armada) 50 WP
0.6 to 1.2
14 to 28
0.2 to 0.4
1 to 2
2 to 4 lbs
0.38 to 0.77
14 to 28
14 to 28
14 to 28
14 to 28
20 WG
2 SC
Red Thread
(Laetisaria fuciformis)
1.3 to 4
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
459
(oz/1,000 sq ft)2
Application
Interval (days)3
0.2 to 0.4
14 to 28
2.5 to 4.5
14 to 21
0.5 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
14 to 21
1.8 to 3.25
3.25 to 5
2 to 5.5
5.5
3 to 5
5.3 to 8
3 to 5
7.9
2.12 to 3.5
5.5
1.8 to 3.2
3.6 to 5.5
3.25 to 5
3.6 to 5.5
7 to 10
14
7 to 14
14
7 to 10
14
7 to 10
14
7 to 10
14
7 to 10
7 to 14
7 to 14
7 to 14
2 to 3.5
3.6 to 5.4
7 to 10
14
3 to 5.9
14 to 28
3 to 4
7 to 8
14 to 21
28
3 to 5.5
5.5 to 8.5
7 to 14
14 to 21
2.75 to 6
14 to 21
3 to 8
3 to 8
3.72 to 5.76
3 to 8
7 to 10
14
14
14 to 21
Disease
Red Thread (continued)
1.4 ME
1.06 G
chlorothalonil*
(Daconil Zn) 4.16 F
(Pegasus) 6 L
(Pegasus) 82.5 DF
(Pegasus HPX) 6 F
(Consyst) 67 WDG
(Peregrin) 67 WDG
(Spectro) 90 WDG
(TM/C) 67 WDG
8
30
0.5
14
0.18 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
0.25 to 1
14 to 28
0.45 to 0.9
21 to 28
1.5
21 to 28
2 to 3
14 to 21
4 SC
0.25 G
iprodione (iprodione (26GT, Iprodione Pro, IPro, Raven) 2 F, 2 SC, 2 SE*
4
14
2 to 4
14 to 21
3 to 4
14
mancozeb*
(Fore) 80 WP
(Dithane) 75 DF
(Pentathlon) 4 LF
(Pentathlon) 75 DF
(Protect, Wingman) 75 W
4 to 8
4 to 8
7 to 14
4 to 8
4 to 8
7 to 14
10
7 to 14
7
7 to 14
2 to 4
7 to 14
0.37
14
(8 to 32) + (1 to 4)
7 to 21
myclobutanil (Eagle, Myclobutanil) 20 EW
1.2
14 to 21
0.3 to 0.5
14
0.88
4
7 to 14
7 to 14
2
14 to 21
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
0.55 to 1.1
14 to 28
0.34 to 0.47
14
3 lbs
14 to 28
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
Propiconazole (Banner MAXX, Kestrel, Propiconazole, Savvi, Strider) 1 ME
20 WG
2 SC
460
Disease
(oz/1,000 sq ft)2
Application
Interval (days)3
Red Thread (continued)
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
0.6 to 1.1
1 to 2
0.6
refer to label
14 to 28
28
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
2 to 4
2 to 4
0.67 to 1.3
1.5 to 6 lbs
1 to 2
14
14 to 28
14
14
14
3.75 to 7.5
3 to 10
0.5 to 1
15 to 30
0.1 to 0.15
0.2 to 0.25
14
21
(Armada) 50 WP
(Tartan) 2 SC*
0.6 to 1.2
1 to 2
14 to 28
14 to 28
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
0.5 to 1
0.15 to 0.3
14 to 28
14 to 28
3.2 to 4.5
refer to label
1
14 to 28
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
0.2 to 0.4
1 to 2
2 to 4 lbs
14 to 28
14 to 28
14 to 28
0.2 to 0.4
14 to 28
2.5 to 4.5
14 to 21
0.5 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
14 to 21
3.7 to 5
4.0 to 5.5
6 to 8
3 to 5
7.9
2.12 to 3.5
5.5
3.2
3.6 to 5.5
3.25 to 5
3.6 to 5.5
14
14
14
7 to 14
14
7 to10
14
7 to 14
7 to 14
7 to 14
7 to 14
vinclozolin (Curulan, Touche) 50 EG*
Rust
(Puccinia ssp.)
1.4 ME
1.06 G
chlorothalonil*
(Daconil Zn) 4.16 F
(Chlorothalonil 500ZN) 6 F
(Pegasus) 6 L
(Pegasus) 82.5 DF
(Pegasus HPX) 6 F
4 to 5.4
14
3 to 5.9
14 to 28
3 to 5.5
4.5 to 8.5
7 to 14
14 to 28
2.75 to 6
14 to 28
3 to 8
3 to 8
3.72 to 5.76
3 to 8
7 to 14
14
14
14 to 21
(Consyst) 67 WDG
(Peregrine) 67 WDG
(Spectro) 90 WDG
(TM/C) 67 WDG
0.5
14
4 SC
0.25 G
0.18 to 0.36
2.3 to 4.6 lbs
0.25 to 1
14 to 28
14 to 28
14 to 28
3 to 5
refer to label
mancozeb*
(Fore) 80 WP
(Dithane) 75 DF
(Petathlon) 4 LF
(Pentathlon) 75 DF
(Wingman) 75 WP
4
4
5 to 7
4
4
7 to 14
10
7 to 10
7 to 10
7 to 10
2 to 4
7 to 14
0.37
14
1.2
14 to 28
1 to 2
14 to 28
propiconazole (Banner Maxx, Kestrel, Propiconazole, Savvi, Strider) 1 ME
461
(oz/1,000 sq ft)2
Application
Interval (days)3
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
0.55 to 1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
0.6 to 1.1
1 to 2
0.6
refer to label
14 to 28
28
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(T-Bird) 4.5 L
4 to 6
4 to 8
3.5 to 5
2.35 to 3.53
14
14 to 28
14
14
3.75 to 7.5
3 to 10
0.5 to 1
15 to 30
0.1 to 0.15
0.2 to 0.25
14
21
0.6 to 1.2
1 to 2
14 to 28
14 to 28
0.5 to 1
0.15 to 0.225
14 to 28
14 to 28
Disease
Rust (continued)
20 WG
2 SC
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
(Armada) 50 WP
(Tartan) 2 SC*
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
3.2 to 4.5
14 to 28
Slime Mold
(Myxomycetes spp.)
mancozeb (Fore) 80 WP*
4 to 8
7 to 14
2 to 4
7 to 14
Southern Blight
(Sclerotium rolfsii)
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
0.2 to 0.4
1 to 2
2 to 4 lbs
0.38 to 0.77
14 to 28
14 to 28
14 to 28
14 to 28
0.2 to 0.4
14 to 28
2.5 to 4.5
14 to 21
0.5 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
0.75 to 1.5
14 to 21
1.4 ME
1.06 G
chloroneb* (Termec) 65 SP
4
5 to 7
3 to 5.9
14 to 28
0.18 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
0.25 to 1
14 to 28
0.45 to 0.9
21 to 28
1.5
21 to 28
2
21 to 28
0.5 to 2
14 to 28
0.6 to 1.2
1 to 2
14
14
0.4
2
0.38 to 0.77
14 to 28
14 to 28
28
0.2 to 0.4
14 to 28
1.4 ME
1.06 G
3
2 to 4 lbs
14 to 28
14 to 28
1.5
14 to 21
5.9
14 to 28
3 to 4
7 to 8
14 to 21
28
4
6
14 to 30 (2 applications)
1 application
4 SC
0.25 G
(Armada) 50 WP
(Tartan) 2 SC*
Spring Dead Spot
(Ophiosphaerella korrae;
O. herpotricha; O. narmari)
azoxystrobin
(Heritage) 0.8 TL
(Strobe) 2L
462
(oz/1,000 sq ft)2
Application
Interval (days)3
0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
0.5 to 1
14 to 28
0.45 to 0.9
21 to 28
2.4
28 (fall)
0.7
28
4
30
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
0.6 to 1.1
2
0.6
21
28
fall and spring
thiophanate-methyl
(3336) 50WP or 4 F
(3336) 2 G
4 to 6
6 to 9 lbs
14
14
3 to 4
7 to 8
14 to 21
28
4.5 to 8.5
fall or spring
1.2
14
1 to 2
fall or spring
tebuconazole*
(Torque) 3.6 F
0.6 to 1.1
0.6
spring
spring
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
(T-Bird) 4.5 L
(SysTec 1998, T-Bird,TM) 4.5 L
4 to 6
4 to 8
6 to 9 lbs
5 to 10
3 to 3.53
5
14
14 to 28
14
14 to 21
14 to 21
14 to 21
1
refer to label
0.6
1
refer to label
refer to label
0.2 to 0.4
1 to 2
2 to 4 lbs
0.38 to 0.77
14 to 28
14 to 28
14 to 28
14 to 28
Disease
Spring Dead Spot (continued)
4 SC
0.25 G
Stripe Smut
(Ustilago striiformis)
triadimefon (Bayleton) 50 WSP
(Armada) 50 WP
(Tartan) 2 SC*
Summer Patch
(Magnaporthe poae)
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
1.4 ME
1.06 G
0.2 to 0.4
14 to 28
0.5 to 0.725
14 to 28
1.5 to 3
2 to 4 lbs
14 to 28
14 to 28
3 to 5.9
14 to 28
3 to 4
7 to 8
14 to 21
28
6 to 11
14 to 28
2 to 4
2
4 to 8
30 (2 applications)
30 (greens)
single application
0.18 to 0.36
2.3 to 4.6 lbs
14 to 28
14 to 28
0.25 to 1
14 to 28
0.45 to 0.9
21 to 28
4 SC
0.25 G
0.5
14
0.26
14 to 28
0.37
14
1.2 to 2.4
14 to 28
0.3 to 0.5
14 to 28
2
4
14
28
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
1.1
14 to 28
0.34 to 0.47
14 to 28
20 WG
2 SC
463
Disease
Summer Patch (continued)
3 lbs
28
0.6 to 1.1
1 to 2
0.6
21
14 to 28
28
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
4 to 6
4 to 8
6 to 9 lbs
3.53
5
14 to 21
14 to 28
14 to 21
14
14
1 to 2
30
0.2 to 0.25
21 to 28
2
1.2
21 to 28
21 to 28
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
1 to 2
0.3 to 0.6
14 to 28
14 to 28
3.2 to 5.4
14 to 28
0.4
2
2 to 4 lbs
0.38 to 0.77
28
28
28
28
(Tartan) 2 SC *
(Armada) 50 WP
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
1.4 ME
1.06 G
0.2 to 0.4
28
0.5 to 0.725
28
3
2 to 4 lbs
14 to 28
14 to 28
5.9
28
4
4 to 8
30 (greens)
30 (1 or 2 applications)
0.36
2.3 to 4.6 lbs
28
28
0.5 to 1
28
0.45 to 0.9
28
2.4
28 (spring/fall)
2 to 4
spring and fall
0.9
0.7
28
28
1.1
28
0.47
28
3 lbs
28
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
0.6 to 1.1
1 to 2
0.6
fall and spring
14 to 28
fall and spring
thiophanate-methyl
(3336) 50 WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
4 to 6
4 to 8
6 to 9 lbs
14
14 to 28
14
1 to 2
21 to 28
1.2
28
triticonazole
(Trinity) 1.7 SC
(Triton) 70 WDG
1 to 2
0.15 to 0.3
14 to 28
14 to 28
3.2 to 5.4
14 to 28
0.4
2
2 to 4 lbs
0.38 to 0.77
28
28
14 to 28
28
0.2 to 0.4
14 to 28
2.5 to 4.5
14 to 28
0.5 to 0.725
14 to 28
4 SC
0.25 G
20 WG
2 SC
trifloxystrobin + triadimefon (Armada) 50 WP
Yellow Patch
(Rhizoctonia cerealis)
Application
Interval (days)3
tebuconazole*
(Torque) 3.6 F
(Mirage) 2 SC
Take-All Patch
(Gaeumannomyces graminis)
(oz/1,000 sq ft)2
azoxystrobin
(Heritage) 0.8 TL
(Heritage) 0.31 G
(Strobe) 2 L
464
(oz/1,000 sq ft)2
Application
Interval (days)3
3
2 to 4 lbs
28
14 to 28
1.5
14 to 21
3 to 5.9
14 to 28
8 to 11
late fall
3 to 5.76
14 to 21
0.5
1 application
0.36
2.3 to 4.6 lbs
28
14 to 28
Disease
Yellow Patch (continued)
1.4 ME
1.06 G
4 SC
0.25 G
0.25 to 1
28
0.45 to 0.9
21 to 28
1.5
21 to 28
2
21 to 28
0.37 to 0.44
late fall
polyoxin D
(Affirm) 11.3 WDG
(Endorse) 2.5 WP
0.88
4
7 to 14
7 to 14
3 to 4
late fall
tebuconazole (Mirage) 2 SC*
1 to 2
21 to 28
4 to 6
4 to 8
6 to 9 lbs
14
14 to 28
14
triticonazole
(Triton FLO) 3 F
(Trinity) 1.75 SC
0.55 to 1.1
1 to 2
21 to 28
21 to 28
3.2 to 5.4
21 to 28
fosetyl Al
(Signature, Fosetyl-Al) 80 WDG
(Autograph) 70 DF*
(Viceroy) 70 DF
4 to 8
2 to 6
4.6 to 9.2
4.6 to 9.1
14 to 21
14 to 21
14 to 21
14 to 21
0.28 to 0.56
0.5 to 1
12.5 to 25
0.2 to 1
10 to 21
10 to 21
10 to 14
10 to 21
metalaxyl (Vireo) 2 MEC
1 to 2
10 to 21
20 WG
2 SC
0.5 to 0.9
0.4 to 0.7
14 to 28
14 to 28
0.55 to 1.1
14 to 28
0.34 to 0.47
14 to 28
3 lbs
14 to 28
thiophanate-methyl
(3336) 50WP or 4 F
(3336 Plus) 2 F
(3336) 2 G
Yellow Tuft
(Sclerophthora macrospera)
mefenoxam
(Subdue WSP) 43 WSP
(Subdue Maxx, Quell 2 ME
(Subdue GR) 1 G
(Mefenoxam, Fenox) 2 AQ, 2 EC
Zoysia Patch
See Large Patch
1
Other trade names with the same active ingredients are labeled for use on turfgrasses and can be used according to label directions.
Apply fungicides in 2 to 5 gallons of water per 1,000 square feet according to label directions. Use lower rates for preventive and higher rates for curative
applications.
3
Use shorter intervals when conditions are very favorable for disease.
* Products marked with an asterisk are not labeled for home lawn use.
2
465
Nematicides for Turf
J. P. Kerns and E. L. Butler, Plant Pathology Extension
Table 10-10. Nematicides for Turf
Nematicide and Formulation
Per 1,000 sq ft
1,3-dichloropropene (Curfew)
4 to 5
Curfew is a restricted use pesticide and may only be applied by custom applicators certified by Dow Agrosciences.
Curfew should not be applied within 100 feet of an occupied structure or any well used for potable water. Do not enter
treated area for 24 hours after application. Curfew may be applied throughout the year, but turfgrass should be actively
growing at the time of application. Soil moisture should be adequate to support good turf growth and maintained at that
level for at least 7 days after application. One-half inch of irrigation or rainfall must be applied to the area to be treated
within 18 hours prior to application and as soon as possible following application. Refer to label for additional application
guidelines.
abamectin (Avid) 0.15 EC
1.31
For use on golf course greens only. Only abamectin formulated as Avid can be used for nematode control in turf
according to a 24(c) label. Appy Avid 0.15 EC as an early curative treatment (after appropriate nematode extraction,
identification, and counts). Apply early in the morning while grass is wet with dew or irrigate the area prior to application
with 0.1 inch of water. Immediately after application irrigate with 0.1 inch of water to move treatments through the
thatch. Do not over irrigate. Apply 3 to 4 consecutive Avid 0.15 EC applications on a 14- to 21-day interval. Avid is
labeled only for sting (Belonolaimus longicaudatus) and ring (Macroposthonia sp.) nematodes.
Bacillus firmus (Nortica)
10 to 30
Nortica is a biological agent for the protection of plant roots against plant parasitic nematodes on turf, lawns, sod farms,
and golf courses. Do not mix with other chemicals or fertilizers during application without first contacting a local Bayer
representative. Do not apply for a month after a formaldehyde application. Do not apply within 2 weeks of a fumigant
application. Do not combine in the spray tank with pesticides, surfactants or fertilizers if there has been no previous
experience or use of the combination to show it is physically compatible, effective, and non-injurious under your use
conditions. Refer to product label for further information about mixing compatabilities. Nortica is suitable for application
by spraying, drenching, or by drip irrigation. Optimal results are obtained by pre-plant applications (from 2 to 7 days
prior to planting) and immediately irrigating after application to a minimum of 3-4 inches. If product is applied prior to
planting, maintain moist soil with daily irrigation until planting. Refer to label for further information about application
techniques. Make applications every 3 months as necessary and irrigate to a depth of 4 inches.
fenamiphos (Nemacur)
3 EC
10 G
9.7
2.3 lbs
furfural (Multiguard Protect)
0.126 to 0.184
Existing stock may be used until October 2017. Nemacur 10G and 3EC are restricted use pesticides. Carefully follow
label directions before and during application. Do not apply to hydrological soil group A soils that are excessively
drained and predominately sand or loamy sand. Do not use on residential lawns or public recreation areas other than
golf courses. Nemacur 10G may also be used on cemetery and industrial grounds turfgrass areas. Do not apply more
than 200 pounds of 10G per acre per year or more than twice per year of the 3EC. Distribute product evenly over area.
Irrigate area immediately using a minimum of 0.5 inch of water. Do not treat newly seeded areas. Do not apply granular
nematicides with hand-held spreaders that might allow the dust to be inhaled. Do not apply where water runoff is likely
to occur. Sod should not be cut or handled for 30 days after treatment. 3EC is not recommended for use on tees and
greens. Do not treat more than 10 acres of turf on any golf course in a 24-hour period. Any application must be followed
by a minimum 3-day interval before another application is made. Do not apply within 10 feet of any surface body of
water or surface drains. Do not apply between noon and sunset from June through September.
For terrestrial (outdoor) non-food use on established turf on golf course tees and greens, practice greens, spot
treatment of fairways, roughs, and turf/sod farms. Areas to be treated must be at least 70% of field capacity before
application. Apply up to 6 applications using only ground boom sprayers set to release spray at no more than 2 feet
above the ground. Use the high rate at the start of the season and under high infestation and/or until acceptable control
is achieved every 14 to 28 days. Then use the lower rate as a maintenance application at 14-28 day intervals.
466
Floral, Nursery, and Landscape Diseases
Fungicides and Bactericides for Disease Control of Greenhouse Floriculture Crops
which contains information about the safe and effective use of the chemical, before using the chemical. Consult the product label to
ensure that the variety of ornamental plant that you wish to treat is listed on the label. Check for phytotoxicity by making trial applications
on a smaller number of plants before you treat an entire crop.
Table 10-11. Disease Control of Annual, Perennial, Bedding, and Flowering Potted Plants in Greenhouses
Disease
Pesticide and Formulation
Rate of Formulation
Schedule and Remarks
Bacterial Leaf Spot (Pseudomonas, Xanthomonas)
Bacillus subtilis (Rhapsody, Cease)
2 to 8 qt/100 gal
copper hydroxide
Begin applications when conditions favor disease development prior to the onset of disease. Thorough
coverage is essential. Repeat at 7-day intervals.
Begin at first sign of disease, and repeat at 7- to 14-day intervals. Do not tank mix copper formulations with
Aliette. Avoid contact with metal surfaces. Discoloration of blooms may occur on certain plant varieties- check
label.
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
copper hydroxide + mancozeb (Junction)
1.5 to 3.5 lb/100 gal
Begin at first sign of disease, and repeat at 7- to 14-day intervals.
1 qt/100 gal
copper, metallic (Copper-Count-N)
copper octanoate (Camelot O)
copper sulfate pentahydrate (Phyton 27)
didecyl dimethyl ammonium chloride
(KleenGrow)
0.5 to 2.0 gal/100 gal
See label
Begin at first sign of disease, and repeat at 7- to 10-day intervals. Camelot O may cause copper toxicity on
some plant species.
See label.
0.06 to 0.38 fl. oz. per
gallon of water
Apply starting at week 3 or earlier if conditions are favorable for disease. Use a watering device to drench the
top and bottom of the leaves and stems, avoiding flowers in full bloom, every 14 days to prevent the spread of
spores and the build-up of organic material. Remove severely infected plants and disinfect the area with 1.0 fl.
oz. KleenGrow per gallon of water.
etridiazole + thiophanate-methyl (Banrot)
40W
6 to 12 oz/100 gal
Apply in sufficient volume to saturate the soil mixture. Irrigate immediately. Repeat at 4- to 12-week intervals if
necessary. Protects against Thielaviopsis and Pythium but is not as effective against Thielaviopsis as
thiophanate-methyl only products that have a higher concentration of active ingredient.
fludioxonil (Medallion)
1 to 2 oz/100 gal
Apply as a preventive drench at seeding or transplanting. Make only one application to seeding crop. If
needed, re-treat transplants 21 to 28 days after initial application.
Do not apply as a seed or soil drench to impatiens or New Guinea impatiens.
Black root rot (Thielaviopsis basicola)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
7.5 to 20 oz/100 gal
8 to 16 fl oz/100 gal
(OHP 6672) 50WP, (T-Storm) 50WSB
(SysTec 1998) FL
(T-Storm Flowable), OHP 6672 (4.5L)
12 to 16 oz/100 gal
20 fl oz/100 gal
triflumizole (Terraguard) 50W
Apply as a heavy spray or drench at the rate of 1/2 to 2 pints per sq ft. Repeat at 4- to 8-week intervals.
Apply 8 oz as a drench or directed spray after seeding, or apply 12 to 16 oz after transplanting. Repeat at 21to 28-day intervals.
Apply 1 to 3 pt/sq ft after transplanting to thoroughly soak growing medium. Repeat at 21-to 28-day intervals.
Apply as heavy spray or drench at a rate of 1 to 2 pints per sq ft. Repeat at 2- to 4-week intervals.
1 to 4 oz/100 gal
Apply as soil drench at 2- to 4-week intervals. Use higher rate under heavy disease pressure.
4 to 8 oz/100 gal
Apply every 7 to 21 days prior to infection. Do not exceed 2 oz/100 gal on impatiens, pansy, or viola. Do not
make more than three sequential applications before switching to a nonstrobilurin fungicide.
2 to 8 qt/100 gal
Repeat at 7-day intervals. Thorough coverage is essential. Begin applications when conditions favor disease
development prior to the onset of disease.
Botrytis Blight
chlorothalonil
(Chlorothalonil DF)
(Chlorothalonil 500ZN)
(Chlorothalonil 720 SFT)
(Chlorostar VI, Daconil Weather Stik,
Echo 720, Manicure 6F)
(Daconil Ultrex) 82.5WDG
(Echo) 90DF, (Echo Ultimate)
(Exotherm Termil)
1.4 lb/100 gal
1.25 lb/100 gal
1 can/1,000 sq ft
On rose, use 1 lb/100 gal.
On rose, use 0.78 lb/100 gal (Echo 90) DF or 0.9 lb/100 gal (Echo Ultimate).
See label for method of application.
chlorothalonil + thiophanate-methyl
(Spectro) 90WDG
1 to 2 lb/100 gal
Minimum re-treat interval is 7 days. Do not apply to green or variegated pittosporium or schefflera more than
once.
Repeat every 7 to 10 days as needed during disease period.
(Consyst WDG, TM/C WDG)
copper hydroxide
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
cyprodinil + fludioxonil (Palladium)
See label
1.9 pt/100 gal
1.37 pt/100 gal
1 3/8 pt/100 gal
0.75 to 1.5 lb/100 gal
Repeat at 7- to 14-day intervals. Apply to foliage or flowers when plants are dry or nearly dry. Discontinue
applications prior to bract formation on poinsettia. Rotate with fenhexamid, iprodione, or fludioxonil.
On rose, use 1 pt/100 gal.
0.5 lb/100 gal
label.
1 lb/100 gal
See label for rate on Easter Lily.
0.75 to 2 pounds/100 gal
1.5 to 3.5 lb/100 gal
1 qt/100 gal
0.5-2.0 gal/100 gal
See label
4 to 6 oz/100 gal
Repeat at 7- to 14-day intervals.
some plant species.
See label.
Spray on a 7-14 day interval while conditions are conducive to disease develepment. After two applications,
alternate with another fungicide with a different MOA for two applications. Cautionary statement on label for
applications to Geraniums, Impatiens and New Guinea Impatiens.
467
Disease
Rate of Formulation
Botrytis Blight (continued)
dichloran (Botran) 75W
1 lb/150 to 200 gal
See label
Apply to stock cuttings or greenhouse plants. Begin when disease is anticipated or first appears. Spray foliage
and flowers at 7- to 14-day intervals.
fenhexamid (Decree) 50WDG
0.75 to 1.5 lb/100 gal
fludioxonil (Medallion) 50WSP
2 to 4 oz/100 gal
iprodione
(Chipco 26019 N/G)
(18 Plus, Iprodione Pro 2SE)
1.0 to 2.5 lb/100 gal
1 to 2.5 qt/100 gal
iprodione + thiophanate-methyl (26/36)
Spray to ensure thorough coverage. Repeat at 7 to 14 day intervals. Do not use as a drench on impatiens or
pothos. Do not use on Spathiphyllum.
mancozeb
(Dithane) 75DF, (Fore) 80WSP,
(Mancozeb DG)
(Pentathlon DF)
(Pentathlon LF)
(Protect DF)
1.5 lb/100 gal
1 to 2 lb/100 gal
0.8 to 1.6 qt/100 gal
1 to 2 lb/100 gal
1 to 2 bags/100 gal
Do not use on French dwarf or signet-type marigolds. Begin at first sign of disease. Repeat at 7- to 10-day
intervals. Most effective when applied prior to infection. Not for use on marigold.
Begin at first sign of disease. Repeat at 7-to 10-day intervals.
To improve performance, add 2 to 4 oz of an effective spreader-sticker. Apply at 7- to 21-day intervals.
mancozeb + myclobutanil (MANhandle)
2 lb/100 gal
RESISTANCE TO THIS CHEMICAL HAS BEEN REPORTED IN BOTRYTIS. Avoid making more than two
consecutive applications of this product. Treat at 7- to 14-day intervals.
Rotate with chlorothalonil, copper, mancozeb, or iprodione.
Make trial application before treating poinsettia.
Spray to runoff. Repeat at 7- to 14-day intervals.
Use no more than two consecutive applications before switching to another fungicide with a different mode of
action.
Do not use after bract formation on poinsettia.
Foliar applications on impatiens, New Guinea impatiens, and some geranium cultivars may cause stunting or
chlorosis, especially on young plants.
Spray to ensure thorough coverage. Repeat at 7- to 14-day intervals. Do not make more than four applications
per year. Do not apply to Spathiphyllum. Do not apply as a soil drench on impatiens or pothos.
Addition of Latron B-1956 will improve performance. Apply at 7- to 10-day intervals.
polyoxin D zinc salt (Endorse 2.5WP)
1.1 to 2.2 lb/100 gal
Apply as a foliar spray every 7 to 10 days. Apply prior to disease development and when conditions are
conducive for disease.
pyraclostrobin + boscalid (Pageant
Intrinsic)
12 to 18 oz/100 gal
Apply prior to disease development. Repeat at 7- to 14-day intervals. Make no more than two sequential
applications. Do not expose petunia or impatiens in flower or wintercreeper or nine bark to spray or drift as
injury may occur.
thiophanate-methyl + mancozeb (Zyban)
79WSB
4 bags/100 gal
(24 oz/100 gal)
Do not use on French marigold or gloxinia. Apply weekly.
trifloxystrobin (Compass O) 50WDG
2 to 4 oz/100 gal
Repeat at 7- to 14-day intervals until the threat of disease is over. Rotate to another nonstrobilurin fungicide
after each application of Compass O. Make no more than four foliar applications per crop cycle or season.
4 to 8 oz/100 gal
Make initial application prior to or at first sign of disease. Repeat at 7- to 14-day intervals. Do not use on
impatiens plugs.
Bulb and Corm Rots (Fusarium, Penicillium)
iprodione
(Chipco 26019 N/G)
didecyl dimethyl ammonium chloride
(KleenGrow)
2 lb/100 gal
2 qt/100 gal
Immerse both crate and
bulbs in a solution of
0.15 to 1.5 fl. oz.
KleenGrow per gallon of
water for 30 sec.
Dip 5 minutes prior to storage.
For control of Botrytis, Rhizoctonia, Fusarium and Penicillium bulb rots and other fungal and bacterial diseases
of tulip, narcissus, gladiolus, crocus, dahlia, freesia, iris, lily, daylily, amaryllis, hyacinth, iris, scilla and
ornamental onion. Remove from solution and allow to drain prior to planting or storage. Test solution regularly
using QAC test strips, (La Motte #2949-BJ or equivalent). Add KleenGrow when necessary to maintain an a.i.
concentration between 90 and 900 ppm.
66 fl oz/100 gal
Dip 5 minutes prior to storage.
thiabendazole (Mertect) 340-F
30 fl oz/100 gal
Clean and treat bulbs and corms within 24 to 48 hours of digging. Warm solution prior to dipping. Mix fresh
solution per label guidelines. Dip bulbs 15 to 30 minutes and corms 15 minutes for Fusarium control, or dip
bulbs 10 to 15 minutes for Penicillium (blue mold) control.
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
(OHP-6672) 50WP, (T-Storm) 50WSB
Soak clean bulbs for 15 to 30 minutes in warm (80-85 degrees F) solution. Treat bulbs within 48 hours of
14.5 to 33 fl oz/100 gal digging. Dry well before storing.
foliar spray;
16 to 24 fl oz/100 gal dip
16 to 24 oz/100 gal
(T-Storm Flowable)
(SysTec 1998) FL, (OHP 6672) 4.5L
12 to 16 oz/100 gal
20 fl oz/100 gal
Cylindrocladium Stem Canker or Root Rot
chlorothalonil
(Chlorothalonil DF)
Echo 720, Manicure 6F)
(Daconil Ultrex, Daconil Weatherstik)
82.5WDG
(Exotherm Termil)
(Spectro) 90WDG
See label
1.9 pt/100 gal
1.37 pt/100 gal
1 3/8 pt/100 gal
Repeat at 7- to 14-day intervals. Apply to foliage or flowers when plants are dry or nearly dry.
1.4 lb/100 gal
1.25 lb/100 gal
1 can/1,000 sq ft
1.0 to 2.15 lb per 100
gallons
1 to 2 oz/100 gal
For best results use spray mixture the same day it is prepared. Spray uniformly over the area to be treated with
a properly calibrated power sprayer, apply as a full coverage spray to run-off when conditions are favorable for
disease development.
Completely drench the growing medium. Repeat at 21- to 28-day intervals. Two applications per year when
conditions favor disease development are usually adequate for control.
468
Disease
Rate of Formulation
Cylindrocladium Stem Canker or Root Rot (continued)
Intrinsic)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
12 to 18 oz/100 gal
7.5 to 20 fl oz/100 gal
(OHP-6672) 50W, (T-Storm) 50WSB
12 to 16 oz/100 gal
(SysTec 1998) FL
(T-Storm Flowable), (OHP 6672) 4.5L
20 fl oz/100 gal
See label
Apply prior to disease development. Completely drench the growing medium. Repeat at 7- to 14-day intervals.
Make no more than two sequential applications. Do not expose petunia or impatiens in flower or wintercreeper
or nine bark to spray, as injury may occur.
Apply as drench or heavy spray at 0.5 to 2 pints per sq ft. Repeat at 4- to 8-week intervals.
Apply 8 oz after seeding or sticking, or 12 to 16 oz after transplanting as a drench or directed spray at a rate
that thoroughly soaks the growing media through the root zone. Repeat every 21 to 28 days.
Apply as a drench or heavy spray at a rate of 1 to 3 pints per sq ft. Repeat at 21- to 28-day intervals.
Apply as a drench or heavy spray at a rate of 1 to 2 pints per sq ft. Repeat at 2- to 4-week intervals.
Can be used as a cutting soak or soil drench.
Downy Mildew
1 to 4 oz/100 gal
2 to 4 oz/100 gal (rose)
2 to 8 qt/100 gal
copper hydroxide
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
cyazofamid (Segway)
dimethomorph (Stature SC)
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
1 qt/100 gal
0.5-2.0 gal/100 gal
See label
2.1 to 3.5 fl oz/100 gal
Apply every 7 to 14 days prior to infection. Do not apply 2-oz rate on less than 14-day intervals. May damage
snapdragons; use 1 oz rate and rotate. Apply every 7 to 21 days on rose.
Repeat at 3- to 10-day intervals. Thorough coverage is essential. Begin applications when conditions favor
disease development, prior to the onset of disease.
Aliette. Avoid contact with metal surfaces. Discoloration of blooms may occur on certain plant varieties; check
label.
Begin at first sign of disease, and repeat at 7- to 14-day intervals. To avoid phytotoxicity, do not use any
copper compound on alyssum.
some plant species.
See label. To avoid phytotoxicity, do not use any copper compound on alyssum.
14 to 21 day intervals using another registered fungicide with a different mode of action. Apply sufficient
volume to wet all foliage until runoff (normally 50 to 100 gallons per acre).
6.12 to 12.25 oz/100 gal Apply at first sign of disease. Apply to obtain complete coverage of flowers, foliage, and stems. Repeat at 10to 14-day intervals throughout the production cycle.
dimethomorph + ametoctradin (Orvego)
Apply on 10 to 14 day intervals using another registered fungicide with a different mode of action. Apply
sufficient volume to wet all foliage until runoff (normally 50 to 100 gallons per acre).
fenamidone (Fenstop)
Apply as a foliar spray until wet. Repeat as necessary on a 28-day schedule. Do not apply more than 2
applications per crop per season.
fluopicolide (Adorn)
Adorn MUST be tank mixed for resistance management with another product that is registered for use against
the target disease.
fosetyl-Al (Aliette) 80WDG
1.25 to 4 lb/100 gal
(bedding plants)
2.5 lb/100 gal (rose)
Systemic. Repeat as necessary, but do not make more than one application every 14 days.
mancozeb
(Mancozeb DG)
(Pentathlon DF)
(Pentathlon LF)
(Protect DF)
1.5 lb/100 gal
1 to 2 lb/100 gal
0.8 to 1.6 qt/100 gal
1 to 2 lb/100 gal
1 to 2 bags/100 gal
Begin at first sign of disease. Repeat 7- to 10-day intervals.
Begin at first sign of disease. Repeat 7- to 10-day intervals.
To improve performance, add 2-4 oz of an effective spreader-sticker. Repeat at 7- to 21-day intervals.
mancozeb + copper hydroxide (Junction)
1.5 to 3.5 lb/100 gal
Begin applications at first sign of disease and repeat at 7- to 14-day intervals.
mancozeb + myclobutanil
(Clevis, MANhandle)
16 oz/100 gal
mandipropamid (Micora)
mefenoxam (Subdue Maxx,
Subdue Gr)
phosphorous acid (Alude, Fosphite,
Reliant)
potassium phosphite (Vital)
Intrinsic)
0.5 to 1 fl oz/100 gal
See label for rates
See label for rates
1.1 to 2.2 lb/100 gal
4 pt/100 gal
12 to 18 oz/100 gal
1.5 lb/100 gal
2 to 4 oz/100 gal
Begin applications at first sign of disease and repeat at 7- to 10-day intervals. Limited trials have shown very
good to excellent control of downy mildew on alyssum, stock, and snapdragon.
This product can also be used on vegetables sold to the retail market in GH with permanent flooring. Apply
prior to disease development. Repeat sprays at 7- to 14-day intervals. Make no more than two sequential
applications, then rotate to another fungicide with a different MOA.
Apply Subdue Maxx as a foliar spray or soil drench treatment.
Apply Subdue GR as a soil surface or soil/planting media incorporation treatment.
Apply prior to disease development. Spray to thoroughly wet all foliage. Repeat at 14- to 21-day intervals.
Apply prior to disease onset, and repeat at 14-day intervals.
injury may occur.
Apply at first sign of disease, and repeat at 7-day intervals.
Apply as a foliar spray before disease is detected or when conditions are favorable for disease. Repeat at 7to-14-day intervals until threat of disease is over.
Fungal Leaf Spots (Consult label for specific fungi controlled)
1 to 4 oz/100 gal
Repeat at 7- to 28-day intervals. Do not make more than three sequential applications before switching to a
nonstrobilurin fungicide. Good control of Alternaria leaf spot.
2 to 8 qt/100 gal
Repeat at 7-day intervals. Thorough coverage is essential. Not effective on Alternaria.
469
Disease
Rate of Formulation
Fungal Leaf Spots (Consult label for specific fungi controlled) (continued)
chlorothalonil
(Chlorothalonil DF)
(Chlorostar VI, Echo 720, Manicure 6
Flowable)
(Spectro) 90WDG
(Consyst WDG, TM/C WDG)
See label.
1.9 pt/100 gal
1.37 pt/100 gal
1 3/8 pt/100 gal
1.4 lb/100 gal
1.25 lb/100 gal
1 to 2 lb/100 gal
0.75 to 1 lb/100 gal
copper hydroxide
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
1.5 to 3.5 lb/100 gal
1 qt/100 gal
0.5-2.0 gal/100 gal
See label
Repeat at 7- to 14-day intervals. Works well for control of Alternaria leaf spot. Discontinue applications prior to
bract formation on poinsettias. Applications made during bloom may damage flowers. Apply to plants when
both foliage and flowers are dry or nearly dry.
Apply when foliage and flowers are dry, or nearly dry. Repeat at 7-day intervals. Good control of Colletotrichum
(anthracnose) and Alternaria. Not recommended for Swedish Ivy, Boston Fern, and Easter Cactus.
Thorough, uniform coverage is essential for good control. Repeat in 7 to 10 days.
label.
Repeat at 7- to 21-day intervals. Discoloration of foliage and/or blooms is possible on some varieties of azalea,
carnation, chrysanthemum, and rose. Do no use on French marigold.
Begin at first sign of disease, and repeat at 7- to 14-day intervals
some plant species.
2 to 4 oz/100 gal
1 to 2 oz/100 gal
Repeat at 7- to 14-day intervals. Good control of Alternaria leaf spot.
iprodione
(Chipco 26019 N/G)
1.0 to 2.5 lb/100 gal
1 to 2.5 qt/100 gal
mancozeb
(Mancozeb DG)
(Pentathlon DF)
(Pentathlon LF)
(Protect DF)
(Clevis, MANhandle)
myclolobutanil
(Eagle) 20EW
(Eagle) 40WP
(Systhane) 40WSP
Intrinsic)
tebuconazole (Torque)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F, (OHP 6672) 50WP, (TStorm) 50WSB
(SysTec 1998) FL, (T-Storm Flowable)
1.5 lb/100 gal
1 to 2 lb/100 gal
0.8 to 1.6 qt/100 gal
1 to 2 lb/100 gall
1 to 2 lb/100 gal
3 to 6 oz/100 gal
4 oz/100 gal
Spray plants to ensure thorough coverage. Repeat at 7- to 14-day intervals. Do not make more than 4
applications per crop per year. Do not drench impatiens or pothos. Do not use on Spathiphyllum. Good control
of Alternaria leaf spot.
Spray plants to ensure thorough coverage. Repeat at 7- to 14-day intervals. Do not make more than 4
applications per crop per year. Do not drench impatiens or pothos. Do not use on Spathiphyllum.
Do not use on French dwarf or signet-type marigolds. Begin at first sign of disease. Repeat at 7- to 10-day
intervals. Most effective when applied prior to infection.
To improve performance, add 2-4 oz of an effective spreader-sticker. Apply at 7- to 21-day intervals.
Apply at first sign of disease, and repeat at 7- to 10-day intervals. The addition of Latron B-1956 will improve
performance. Good control of Alternaria.
Apply at 10- to 14-day intervals, not to exceed 21 days. For chrysanthemums, see label for specific rates.
6 to 12 oz/100 gal
injury may occur.
2.2 lb/100 gal
Control of Alternaria blight, anthracnose (Colletotrichum), and Curvularia leaf spot. Apply as a foliar spray
every 7 to 10 days. Apply prior to disease development and when conditions are conducive for disease.
10 to 14.5 fl oz/100 gal
20 fl oz/100 gal
Begin applications 14 to 21 days prior to when disease is expected, or at very first sign of disease.
Begin applications 14 to 21 days prior to when disease is expected, or at very first sign of disease. Repeat at 7to 10-day intervals. Poor control of Alternaria leaf spot.
Begin when disease first appears and repeat at 7- to 14-day intervals.
Begin when disease first appears and repeat at 10- to 14-day intervals.
triadimefon (Strike) 25WDG
2 to 4 oz/100 gal
Apply as needed at first sign of disease. Good control of Alternaria leaf spot.
1 to 4 oz/100 gal
Repeat at 7- to 14-day intervals until threat of disease is over. Rotate to another nonstrobilurin fungicide after
each application. Good control of Alternaria leaf spot.
4 to 8 oz/100 gal
Apply at very first sign of disease. Do not use on impatiens plugs, and do not exceed 2 oz/100 gal for impatiens
transplants. Repeat at 7- to 14-day intervals.
triticonazole (Trinity) 19SC
See label as rate varies depending on fungal leaf spot pathogen. Use preventively. Begin applications when
conditions favor fungal infection and before disease symptom development. Use of an adjuvant/spreader
sticker can aid in control.
1 to 4 oz/100 gal
(directed spray)
0.2 to 0.9 oz/100 gal
(drench)
Apply as a directed spray every 7 to 21 days,
Fusarium Root and Crown Rot
Apply as a soil drench at 7-to 28 day intervals.
40W
6 to 12 oz/100 gal
necessary.
pyraclostrobin (Empress Intrinsic)
Apply at 1 to 3 fl oz for plants in propagation, rooted cuttings, plugs and seedlings and at 2 to 6 fl oz to all other
plants. Apply preventative to disease with sequential at 7 to 28 days after the first application if needed.
470
Disease
Rate of Formulation
Fusarium Root and Crown Rot (continued)
fludioxonil + mefenoxam (Hurricane)
48WP
Intrinsic)
Streptomyces griseoviridis (Mycostop)
1 to 2 oz/100 gal
See label
12 to 18 oz/100 gal
See label
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
7.5 to 20 fl oz/100 gal
(OHP-6672) 50WP, (T-Storm) 50WSB
(SysTec 1998) FL
(T-Storm Flowable), (OHP 6672) 4.5L
12 to 16 oz/100 gal
20 fl oz/100 gal
4 to 8 oz/100 gal
Apply as a drench at seeding or transplanting. Make only one application to seeding crop. If needed, retreat
transplants 21 to 28 days after initial application. See label for incorporation into potting mixture.Do not apply
as a seed or soil drench to impatiens or New Guinea impatiens.
Apply as a pre-potting or growing media drench per label directions. Application to impatiens, New Guinea
impatiens, pothos, geranium, and Easter lily may cause stunting and/or chlorosis.
Apply prior to disease development. Completely drench the growing medium. Repeat at 7- to 14-day intervals.
Make no more than two sequential applications. Do not expose petunia or impatiens in flower or wintercreeper
or nine bark to spray, as injury may occur.
Apply inoculant as a seed dressing, soil drench spray, or transplant dip. Must be applied prior to onset of
disease. See label.
Apply as a heavy spray or drench at a rate of 0.5 to 2 pints per sq ft. Repeat at 4- to 8-week intervals.
Apply 8 oz as a drench or directed spray after seeding or sticking or 12 to 16 oz after transplanting. Repeat at
21- to 28-day intervals.
Soak growing medium after transplanting. Repeat every 21 to 28 days.
Apply soil drenches weekly as needed. Use higher rate under heavy disease pressure.
Use preventively. Begin applications when conditions favor fungal infection and before disease symptom
development. The crown and base of the plant and the soil or potting medium surrounding the crown must be
thoroughly covered.
Myrothecium Leaf Blight, Crown, or Petiole Rot
chlorothalonil
Echo 720, Manicure 6 Flowable)
(Chlorothalonil DF)
(Chlorothalonil 500 ZN)
(Echo Ultimate)
1 to 4 oz/100 gal
1 3/8 pt/100 gal
Apply every 7 to 21 days. Do not exceed 2 oz per 100 gal on impatiens, pansy, or violas.
Repeat applications at 7- to 14-day intervals.
See label
1.9 pt/100 gal
1.37 pt/100 gal
1.4 lb/100 gal
1.25 lb/100 gal
2 to 4 oz/100 gal
1 to 2 oz/100 gal
Spray to runoff at 7- to 14-day intervals. See label for media mix and drench applications. Drench applications
to impatiens or New Guinea impatiens may cause stunting and/or chlorosis.
Intrinsic)
8 to 12 oz/100 gal
injury may occur.
4 to 8 oz/100 gal
Apply prior to or at first sign of disease. Repeat at 7- to 14-day intervals. Use higher rates for initial application
under disease pressure. Do not use on impatiens plugs. Do not exceed 2 oz per 100 gallons on impatiens
transplants.
development. Use of an adjuvant/spreader sticker can aid in control.
Phytophthora Aerial Shoot Blight
1 to 2 oz/100 gal
Apply every 7 to 28 days. Do not make more than three sequential applications before switching to another
effective fungicide with a different mode of action.
(Spectro) 90 WDG
1 to 2 lb/100 gal
Apply when plants are dry. Spectro has protective and curative action. Repeat at 7-day intervals.
6.12 to 12.25 oz/100 gal Begin spraying at first sign of disease. Use a full-coverage spray at 10- to 14-day intervals throughout
production cycle.
14 fl oz/100 gal
Apply on 10 to 14 day intervals using another registered fungicide with a different mode of action. Apply
sufficient volume to wet all foliage until runoff (normally 50 to 100 gallons per acre).
Apply as a foliar spray until wet. Repeat as necessary on a 28-day schedule. Do not apply more than 2
applications per crop per season.
MUST ALWAYS BE TANK MIXED WITH THE LABEKED RATE OF ANOTHER FUNGCIDE WITH A
DIFFERENT MODE OF ACTION. Apply before disease development. Use higher rate when treating plants
with high potential for disease. Reapply after 14 to 28 days.
fosetyl-Al (Aliette) 80 WDG
1.25 to 4 lb/100 gal
Apply prior to disease development. Apply as a foliar spray. Repeat as necessary, but do not exceed one
application every 14 days.
prior to disease development. Repeat at 7- to 14-day intervals. Make no more than two sequential applications
before rotating to an alternate MOA.
Reliant)
See label for rates
Apply as a soil drench or foliar spray as a preventive.
Intrinsic)
1 pt/100 gal
18 oz/100 gal
Apply preventatively as a soil drench or foliar spray.
injury may occur.
471
Disease
Rate of Formulation
Phytophthora or Pythium Root and Crown Rot
cyazofamid (Segway)
3.0 to 6.0 fl oz/100 gal
3.06 to 6.12 oz/50 to 100 Apply when plant roots are well established, or at first sign of disease on 10- to 14-day intervals throughout
gal
production cycle. Use enough solution to wet root zone. Avoid watering plants for several hours after
application. See label for rates for container-grown perennials and woody ornamentals. Not effective against
Pythium root rot.
dipotassium phosphonate + dipotassium
phosphate (Biophos) 1% (v/v)
See label for rates
etridiazole
(Truban) 30WP
(Terrazole) 35WP
40W
fludioxonil + mefenoxam (Hurricane)
48WP
Apply ONLY to ornamentals grown in containers in greenhouses as a soil drench. Make applications on a 14to 21-day interval using another registered fungicide with a different mode of action. Check label for
recommended maximum drench volume based on pot diameter.
3 to 10 oz/100 gal
3.5 to 10 oz/100 gal
NOT LABELED FOR PYTHIUM. Apply on 10 to 14 day intervals using another registered fungicide with a
different mode of action. Apply sufficient volume to wet all foliage until runoff (normally 50 to 100 gallons per
acre).
Apply in sufficient volume to saturate soil. Irrigate immediately. Repeat at 4- to 12-week intervals.
Drench 4-in. pot with a minimum of 2 oz and a 6-in. pot with 4 oz. Re-treat at 4- to 12-week intervals. Use
higher rates for peat or other high organic potting media.
4 to 8 oz/100 gal
necessary.
7 to 14 fl oz/50 to 100
gal/400 sq ft
Apply as a drench using 1 to 2 pints per square foot. Repeat as necessary on a 28-day application schedule.
Do not apply more than 4 applications of the maximum rate per crop per season. Higher rate has shown more
consistent efficacy in research trials.
See label
Apply as a pre-potting or growing media drench per label directions. Application to impatiens, New Guinea
impatiens, pothos, geranium, and Easter lily may cause stunting and/or chlorosis.
MUST ALWAYS BE TANK MIXED WITH THE LABEKED RATE OF ANOTHER FUNGCIDE WITH A
DIFFERENT MODE OF ACTION. Apply before disease development. Use higher rate when treating plants
with high potential for disease. Reapply after 14 to 28 days. Do not make more than one application per crop
on poinsettia- phytotoxicity has been observed with repeat applications.
1.25 to 4 lb/100 gal
Apply as a foliar spray prior to disease development. Repeat as necessary, but do not exceed one application
every 14 days.
prior to disease development. Repeat at 7- to 14-day intervals. Make no more than two sequential applications.
mefenoxam (Fenox ME, Mefenoxam 2,
Subdue MAXX)
See label for rates
Can be applied as a drench, soil surface spray, or incorporated into the soil mix. Consult label for specific crops
and applications.
phosphorous acid (Alude, FOSPHITE,
Reliant)
See label for rates
propamocarb (Banol)
1 pt/100 gal
Apply preventatively as a soil drench or foliar spray.
Apply at seeding or transplanting. See label. Effective for preventing Pythium infections.
1 to 3 fl oz100 gal in
Apply as a preventative drench – prior to onset of disease. Can be reapplied 7 to 28 days following the intial
propagation and 2 to 6 fl application.
oz/100 gal for all other
plants in production
Powdery Mildew
1 to 4 oz /100 gal
Spray every 7 to 28 days as needed. To avoid fungicide resistance, do not make more than two sequential
applications of Heritage before rotating with non-strobilurin products.
2 to 4 qt/100 gal
Repeat at 7-day intervals. Thorough coverage is essential. Begin applications when conditions favor disease
development prior to the onset of disease.
chlorothalonil
(Chlorothalonil DF)
(Spectro) 90WDG
(ConSyst, TM/C) 50WDG
1 3/8 pt/100 gal
See label
1.9 pt/100 gal
(1.6 pt/100 gal on rose)
1.37 pt/100 gal
1.4 lb/100 gal
1.25 lb/100 gal
1 to 2 lb/100 gal
0.75 lb/100 gal
copper hydroxide
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
(Clevis, MANhandle)
Apply until runoff when flowers and foliage are dry. Repeat at 7- to 14-day intervals. Avoid applications during
bloom where flower injury is unacceptable. Discontinue use on poinsettias prior to bract formation.
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
0.5-2.0 gal/100 gal
See label
Apply when foliage and flowers are dry, or nearly dry. Re-treat at 7-day intervals.
label.
some plant species.
4 to 6 oz/100 gal
alternate with another fungicide with a different MOA for two applications.
16 oz/100 gal
Begin at first sign of disease, and repeat at 7- to 10-day intervals. In a limited number of trials, gave excellent
control of powdery mildew on rose.
472
Disease
Rate of Formulation
myclobutanil
(Eagle) 20EW
(Eagle) 40WSP
(Systhane) 40WSP
3 to 6 oz/100 gal
4 oz/100 gal
neem oil (Triact 70)
1 gal/100 to 200 gal
Trial first on open blooms. Retreat at 7- to 14-day intervals. Use 1:200 rate as a preventive and 1:100 rate if
disease is evident.
piperalin (Pipron) LC
See label for precautions on hydrangea, begonia, and poinsettia. Use high rate if disease is already present.
Intrinsic)
6 to 12 oz/100 gal
injury may occur.
2 to 2.5 lb/100 gal
1 to 3 lb/100 gal
4 to 8 oz/100 gal
Apply every 10- to 14 days. Increase frequency to every 5 - to 7 days under heavy disease pressure.
Begin at first sign of disease. Repeat at 7-10 day intervals.
See label for precautions for poinsettia, impatiens, and pansy. Repeat at 7- to 14-day intervals.
potassium bicarbonate
(Armicarb 100)
(Kaligreen)
(MilStop)
Apply at 10- to 14-day intervals. Use caution if applying to Gerbera daisy as phytotoxicity may occur.
1.1 to 2.2 lb/100 gal
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F, (OHP 6672) 50WP, (TStorm) 50WSB
((SysTec 1998) FL, ((T-Storm Flowable)
79W
12 to 24 oz/100 gal
Apply when disease first appears and repeat at 7- to 14-day intervals.
10 fl oz/100 gal
4 bags/100 gal
(24 oz/100 gal)
Repeat at weekly intervals.
triadimefon (Strike) 25WDG
2 to 4 oz/100 gal
Apply as needed at first sign of disease. Repeat at 14- to 21-day intervals. Not effective for powdery mildew
control on verbena.
2 to 4 oz/100 gal
Good eradicant. Repeat at 7- to 14-day intervals. Rotate to another fungicide of nonstrobilurin chemistry after
each Compass application. Use caution when applying to petunia, violets, and New Guinea impatiens due to
possible phytotoxicity.
4 to 16 oz/100 gal
Use 16 oz/100 gal for initial applications of existing infections. Use 4 to 8 oz/100 gal for subsequent
applications and preventative sprays. Do not exceed 2 oz/100 gal for impatiens transplants. Repeat at 7- to 14day intervals.
development. Use of an adjuvant/spreader sticker can aid in control.
Rhizoctonia Aerial Blight
chlorothalonil
(Chlorothalonil DF, Chlorothalonil 720
SFT)
(Echo Ultimate)
1 to 4 oz/100 gal
1 3/8 pt/100 gal
Repeat at 7- to 28-day intervals. Do not make more than three sequential applications before switching to a
nonstrobilurin fungicide.
Apply when foliage and flowers are dry. Repeat at 7- to 14-day intervals. Apply to hydrangea foliage only.
Avoid application during bloom period on plants where flower injury is unacceptable.
See label
1.9 pt/100 gal
1.4 lb/100 gal
1.25 lb/100 gal
(Spectro) 90WDG
1 to 2 lb/100 gal
Re-treat at a minimum of 7-day intervals.
2 to 6 oz/100 gal
Spray on a 7 to14 day interval while conditions are conducive to disease develepment. After two applications,
1 to 2 oz/100 gal
Spray to runoff. Repeat at 7- to 14-day intervals until conditions no longer favor disease.
flutolanil (Contrast, Prostar) 70WSP
3 to 12 oz/100 gal
Apply at 14- to 21-day intervals.
iprodione
(Chipco 26019 N/G)
1 to 2 lb/100 gal
1 to 2.5 qt/100 gal
Spray plants to ensure thorough coverage Repeat at 7- to 14-day intervals. Do not make more than four
applications per crop per year. Do not use as a soil drench on impatiens or pothos. Do not use on
Spathiphyllum.
Spray plants to ensure thorough coverage. Repeat at 7- to 14-day intervals. Do not make more than four
applications per year. Do not use as a soil drench on impatiens or pothos. Do not use on Spathiphyllum.
Intrinsic)
12 to 18 oz/100 gal
Apply prior to disease development. Repeat at 7- to 14 day intervals. Make no more than two sequential
injury may occur.
1.1 to 2.2 lb/100 gal
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
thiophanate-methyl + flutolanil (SysStar
WDG)
10 to 14.5 fl oz/100 gal
4 to 8 oz/100 gal
Apply when disease symptoms first appear. Repeat at 7- to 14-day intervals.
For best results apply before disease development.
473
Disease
Rate of Formulation
Rhizoctonia Aerial Blight (continued)
4 to 8 oz/100 gal
Make initial application prior to or at first sign of disease. Use the higher rate under heavy disease pressure.
Rhizoctonia Stem and Root Rot
1 to 4 oz/100 gal (spray) Apply as a preventative spray or drench treatment. Repeat at 7 to 21 days. Do not exceed 2 oz/100 gal on
0.9 oz/100 gal (drench) impatiens.
(Spectro) 90WDG
1 to 2 lb/100 gal
Spray uniformly over area to be treated. Re-treat at 7-day intervals.
40W
4 to 8 oz/100 gal
necessary.
1 to 2 oz/100 gal
Apply as a drench at seeding or transplanting. Apply sufficient mix to wet the upper one-half of the growing
medium. Make only one application to seedling crop. If needed, re-treat transplants 21 to 28 days after initial
application.
Do not apply as a seed or soil drench to impatiens or New Guinea impatiens. May cause stunting or chlorosis
on some geranium cultivars.
fludioxonil + mefenoxam (Hurricane) 48
WP
flutolanil (Contrast, Prostar) 70WSP
See label
3 to 6 oz/100 gal
iprodione
(Chipco 26019 N/G)
PCNB (Terraclor) 75WP
Intrinsic)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
6.5 oz/100 gal
13 fl oz/100 gal
4 to 8 oz/100 gal
See label for amount to apply. One repeat application can be made 4 to 6 weeks later, if necessary.
1.1 to 2.2 lb/100 gal
Apply as a drench every 14 to 28 days.
12 to 18 oz/100 gal
7.5 to 20 fl oz/100 gal
thiophanate-methyl + flutolanil (SysStar
WDG)
2 to 4 oz/100 gal
Apply 1 to 2 pints per sq ft at seeding or transplanting. Do not apply as a drench on impatiens or pothos.
Repeat every 14 days. Do not make more than six applications per year. Do not use on Spathiphyllum.
Apply 1 to 2 pints per sq ft at seeding or transplanting. Do not apply as a drench on impatiens or pothos. Do
not use on Spathiphyllum. Repeat every 14 days. Do not make more than 6 applications per year.
12 to 16 oz/100 gal
20 fl oz/100 gal
Apply drench at 2 oz per 4-in. pot. Repeat 21 to 28 days after initial application. Make no more than four
applications per year.
13.5 fl oz/100 gal
(OHP 6672) 4.5L, (T-Storm Flowable)
Apply as a pre-potting or growing media drench per label directions. Labeled for Rhizoctonia and
Phytophthora/Pythium root rots and is best used when both diseases are present or suspected.
0.5 oz/100 gal
4 to 8 oz/100 gal
injury may occur.
Apply as a heavy spray or drench at a rate of 0.5 to 2 pints per sq ft. Repeat at 4- to 8-week intervals.
Apply 8 oz as a drench or directed spray after seeding or 12 to 16 oz after transplanting. Repeat at 21- to 28day intervals.
Apply as a drench at a rate of 1 to 3 pints per sq ft after transplanting. Repeat at 21- to 28-day intervals.
Apply as a drench or heavy spray at a rate of 1 to 2 pints per sq ft after transplanting. Repeat at 2- to 4-week
intervals.
Apply according to label directions.
Apply as a drench to wet upper half of the growing media. Apply at seeding, again at transplanting, and at 21to 28-day intervals thereafter. May injure petunia, violet, and New Guinea impatiens.
development. The crown and base of the plant and the soil or potting medium surrounding the crown must be
thoroughly covered.
Rusts
chlorothalonil
(Chlorothalonil DF, Chlorothalonil 720
SFT)
(Spectro) 90WDG
mancozeb
(Mancozeb DG)
(Pentathlon DF)
(Pentathlon LF)
(Protect DF)
mancozeb + myclobutanil (Clevis,
MANhandle)
1 to 4 oz/100 gal
1 3/8 pt/100 gal
Apply at 7- to 28-day intervals. Do not make more than three sequential applications of Heritage before
alternating with a nonstrobilurin fungicide. Not effective for rust control on Hypericum. Rotate with mancozeb or
triflumizole.
Apply when foliage and flowers are dry. Repeat at 7- to 14-day intervals. Apply to hydrangea foliage only.
Avoid application during bloom period on plants where flower injury is unacceptable.
See label
1.9 pt/100 gal
1.4 lb/100 gal
1.25 lb/100 gal
1 to 2 lb/100 gal
1.5 lb/100 gal
1 to 2 lb/100 gal
0.8 to 1.6 qt/100 gal
1 to 2 lb/100 gal
1 to 2 lb/100 gal
Apply when foliage and flowers are dry, or nearly dry. Re-treat at a minimum of 7-day intervals.
Begin at first sign of disease. Repeat at 7- to 10-day intervals.
Begin application at first sign of disease. Repeat at 7- to 10-day intervals.
Begin application at first sign of disease. Repeat at 7- to 10-day intervals.
Apply at first sign of disease, and repeat at 7- to 10-day intervals. The addition of Latron B-1956 will improve
performance. In a limited number of trials, gave very good to excellent control of rust on geranium (18 oz/100
gal) and snapdragon (1 lb/100 gal).
474
Disease
Rate of Formulation
Rusts (continued)
myclobutanil
(Eagle) 20EW
(Eagle) 40WP
(Systhane) 40WSP
3 to 6 oz/100 gal
4 oz/100 gal
Apply at 7- to 14-day spray intervals. Trial first on open blooms. To control existing disease, apply on a 7-day
schedule until disease pressure is eliminated. Not for impatiens, carnation, or hibiscus.
oxycarboxin (Plantvax) 75W
16 to 24 oz/100 gal
Apply at first sign of disease. Repeat at 2-week intervals for a maximum of two to four applications per season.
Intrinsic)
6 to 12 oz/100 gal
injury may occur.
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
10.75 to 20 fl oz/100 gal
Apply on a protectant application schedule at 10- to 14-day intervals. See label for rates to control white rust on
chrysanthemum.
Begin applications at first sign of disease. Repeat at 7- to 14-day intervals.
triadimephon (Strike) 25WDG
2 to 4 oz/100 gal
Spray to the point of drip as needed.
triflumizole (Terraguard) 50WP
2 to 8 oz/100 gal
Apply prior to, or at first sign of disease. Repeat at 7- to 14-day intervals.
1 to 4 oz/100 gal
Apply at 7- to 21-day intervals. Test for phytotoxicity prior to treating entire crop. Do not make more than three
sequential applications of Heritage before alternating with a nonstrobilurin fungicide.
(Spectro) 90WDG
1 to 2 lb/100 gal
Repeat at 7-day intervals.
Scab, Poinsettia (Sphaceloma))
2.0 to 3.5 oz/100 gal
mancozeb
(Mancozeb DG)
(Protect DF)
1.5 lb/100 gal
Spray at first sign of disease. Apply at 7- to 21-day intervals. May leave a residue.
1 to 2 lb/100 gal
(Clevis, MANhandle)
2 lb/100 gal
myclobutanil
(Eagle) 20EW
(Eagle) 40WP
(Systhane) 40WSP
3 to 6 oz/100 gal
4 oz/100 gal
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
10 to 14.5 fl oz
triflumizol (Terraguard) 50W
Apply at 7-day intervals.
4 to 8 oz/100 gal
Apply at first sign of disease. The addition of Latron B-1956 will improve performance.
Retreat at 10- to 14-day intervals.
development.
Sclerotinia Blight (Sclerotinia sclerotiorum)
1 to 4 oz/100 gal
chlorothalonil
(Chlorothalonil DF)
See label
1.9 pt/100 gal
1.37 pt/100 gal
Apply as a directed spray at 7- to 21-day intervals. Test for phytotoxicity prior to treating entire crop. Do not
exceed 2 oz/100 gal on impatiens, pansy, and violas.
Apply at 7- to 14-day intervals. Apply when foliage and flowers are dry, or nearly dry. Applications made during
bloom may damage flowers.
1 3/8 pt/100 gal
1.4 lb/100 gal
1.25 lb/100 gal
(Spectro) 90WDG
1 to 2 lb/100 gal
Apply when both foliage and flowers are dry, or nearly dry. Repeat at 7-day intervals. Do not use on Swedish
ivy, Boston fern, or Easter cactus.
2 to 6 oz/100 gal
fenhexamid (Decree) 50WDG
0.75 to 1.5 lb/100 gal
Intrinsic)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
(OHP 6672) 4.5L, (T-Storm Flowable)
(SysTec 1998) FL
See label
12 to 18 oz/100 gal
7.5 to 20 fl oz/100 gal
12 to 16 oz/100 gal
20 fl oz/100 gal
1 to 4 oz/100 gal
Apply at 7- to 14-day intervals. Maintain agitation during application. May cause phytotoxicity on poinsettia
bracts.
Apply as a drench or bulb soak according to label directions.
injury may occur.
Repeat at 4- to 8-week intervals.
Apply as a foliar spray. Repeat at 7- to 14-day intervals.
development. The stem areas of the plant must be thoroughly covered using spray to runoff.
Thielaviopsis Root Rot: See Black root rot.
Further Information — Plant Pathology Disease Notes may be accessed at: www.ces.ncsu.edu/depts/pp/notes/Ornamentals/Ornamental_contents.html.
Printed copies are also available at each county Cooperative Extension Center.
475
Disease Control for Forest, Christmas, and Ornamental Trees
Table 10-12. Disease Control for Forest, Christmas, and Ornamental Trees
CROP
Disease
Material
Rate
Method
Schedule
Remarks
foliar spray
Three to four applications at
14-day intervals.
First application at bud break.
1.4 lb/100 gal
foliar spray
Repeat in 7 to 14 days when
conditions favor disease.
1 to 4 oz/100 gal
foliar spray
Repeat in 14 to 28 days
when conditions favor
disease.
18 oz./100 gal
foliar spray
Repeat applications 7 to14
days as needed
foliar spray
Begin applications 14 to 21
days prior to when disease is
expected, or at very first sign
of disease.
Ash
Anthracnose
thiophanate-methyl
(AllBan Flo)
(Cleary 3336)
chlorothalonil
metconazole (Tourney)
pyraclostrobin + boscalid
(Pageant Intrinsic)
10.75 to 20 fl oz/100 gal
Crabapple
Fire blight
copper
See label
foliar spray
One spray before bud break.
Can be phytotoxic after bud break.
50 to 100 ppm
foliar spray
Three to five applications
starting at 20% to 30%
bloom.
Spray every 10 to 14 days.
1 to 4 oz/100 gal
foliar spray
disease.
6 to 12 oz./100 gal
foliar spray
days as needed
5.5 oz/275 to 550 gal
foliar spray
Every 7 to 14 days.
1 to 4 oz/100 gal
foliar spray
disease.
myclobutanil
(Systhane)
(Immunox)
4 oz/100 gal
1 fl oz/gal
foliar spray
Spray every 14 days.
propiconazole (Banner
MAXX)
2 to 8 fl oz/
100 gal
foliar spray
Every 14 to 21 days as
needed.
Start at bud break.
(see label for specific
rate instructions
foliar spray
Every 14 to 21 days
See label for additional details
(Pageant Intrinsic)
6 to 12 oz./100 gal
foliar spray
days as needed
foliar spray
of disease.
foliar spray
Every 7 to 14 days.
4 oz/100 gal
foliar spray
See label
foliar spray
See label.
1 to 4 oz/100 gal
foliar spray
disease.
(Pageant Intrinsic)
8 to 12 oz./100 gal
foliar spray
days as needed
foliar spray
Every 7 to 14 days.
Use preventively. Begin applications when
conditions favor fungal infection and before disease
symptom development. Use of an djuvant/spreader
foliar spray
To avoid fungicide resistance, do not make more
than three sequential applications before rotating
with nonstrobilurin products.
streptomycin (Agri-mycin 17)
Powdery mildew,
rust
(Pageant Intrinsic)
triadimefon (Bayleton) 50
WSP
Scab, cedar apple
rust, powdery
mildew
chlorothalonil + propiconazole
(Concert II)
Spray early for rust, as needed for mildew.
For best control, use a protectant application
schedule.
symptom development. The stem areas of the plant
must be thoroughly covered using spray to runoff.
Crapemyrtle
Cercospora leaf
spot
azoxystrobin
(Heritage) 50 W
horticultural oil (Ultra-Pure Oil)
Diplodia tip blight,
Lophodermium
needlecast, Swiss
needlecast
azoxystrobin
(Heritage) 50 WG
476
CROP
Disease
Material
Rate
Method
Schedule
4 oz/100 gal
foliar spray
Preventative sprays at 7- to
28-day intervals.
22 – 35 fl oz/100 gal
foliar spray
Every 14 to 21 days
1 to 4 oz/100 gal
foliar spray
disease.
myclobutanil (Eagle) 40 WP
3 to 6 oz/100 gal
foliar spray
Spray at 10- to 14-day
intervals.
(Pageant Intrinsic)
6 to 12 oz./100 gal
foliar spray
days as needed
foliar spray
Every 7 to 14 days.
cyazofamid (Segway)
soil drench
14 to 21 day intervals using
another registered fungicide
with a different mode of
action.
fosetyl-AL (Aliette) WDG)
2.5 lb/100 gal
2.5 to 5 lb/100 gal
Remarks
Crapemyrtle (continued)
Powdery mildew
azoxystrobin
(Heritage) 50 W
(Concert II)
Root rot
(Phytophthora spp.)
mefenoxam (Subdue MAXX)
dip
Before transplanting
foliar (spray to 30-day minimum interval
wet)
Spring and fall (every 6
months).
See label for details
symptom development. Use of an djuvant/spreader
Thoroughly wet plant and root mass immediately
before transplanting.
Seedlings:
1.25 pt/50 gal
2-0 transplants:
2.5 pt/50 gal
directed soil
spray over
beds
Apply 0.5 to 1 in. of water after application, if rain is
not expected within 3 days.
phosphorous acid (Alude,
Fosphite, Reliant)
See label for rates
Apply as a
soil drench or
foliar spray as
a preventive
(Pageant Intrinsic)
12 to 18 oz/100 gal
Soil drench
Repeat applications 14 to 28
days as needed
1 to 4 oz/100 gal
foliar spray
than three sequential applications before rotating
with nonstrobilurin products.
chlorothalonil (Daconil Ultrex)
82.5 WDG
1.4 lb/100 gal
foliar spray
Repeat every 7 to 14 days
disease.
Prune out all diseased tissue. Several applications
in fall before leaf drop may also be advisable.
(Concert II)
9 – 17 fl oz/100 gal
foliar spray
Spray every 14 to 21 days
See label for additional details.
foliar spray
from bud break until midsummer.
1 to 4 oz/100 gal
foliar spray
disease.
4 oz/100 gal
1 fl oz/gal
foliar spray
foliar spray
(Pageant Intrinsic)
8 to 12 oz/100 gal
foliar spray
days as needed
foliar spray
of disease.
10.75 to 20 fl oz/100 gal
foliar spray
from bud break to midsummer.
foliar spray
symptom development.
Also see Fraser Fir
Dogwood
Anthracnose
(Discula)
azoxystrobin
(Heritage) 50 WG
mancozeb
(Dithane, Fore, Mancozeb
DG)
(Protect DF)
myclobutanil
(Systhane)
(Immunox)
MAXX)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
1.5 lb/100 gal
1 to 2 lb
477
from bud break to midsummer.
CROP
Disease
Material
Rate
Method
Schedule
Remarks
1 to 4 oz/100 gal
foliar spray
Spray every 7 to 28 days as
needed.
Do not make more than three sequential
applications of Heritage before rotating with
nonstrobilurin products to avoid fungicide
resistance. See label.
22 – 35 fl oz/100 gal
foliar spray
Every 14 to 21 days
See label for additional details
1 to 4 oz/100 gal
foliar spray
disease.
3.0 oz/50 to100 gal
4 oz/100 gal
foliar spray
1 gal/100 gal
foliar spray
Spray at 14-day intervals.
propiconazole
(Banner MAXX)
foliar spray
Spray every 21 days in
spring.
(Pageant Intrinsic)
6 to 12 oz./100 gal
foliar spray
days as needed
foliar spray
of disease.
2 to 4 oz/100 gal
foliar spray
Repeat at 7- to 14-day
intervals.
Follow resistance management information on label.
A nonionic surfactant will improve efficacy.
thiophanate-methyl +
chlorothalonil
(Spectro) 90 WDG
2 lb/100 gal
foliar spray
Minimum repeat interval is 7
days.
Protective and curative activity.
triflumizol (Terraguard)
2 oz/100 gal
foliar spray
Make initial application prior
to or at first sign of disease.
Repeat at 7- to 14-day
intervals.
foliar spray
soil drench
action.
Dogwood (continued)
Powdery mildew
azoxystrobin
(Heritage) 50 WG
(Concert II)
myclobutanil
(Eagle) 40 WSP
(Systhane)
petroleum distillate:
horticultural oil
(Sunspray) 11 E
trifloxystrobin (Compass O)
Root rot
cyazofamid (Segway)
(Phytophthora spp.)
Spot anthracnose
(Elsinoe)
Septoria leaf spot
fosetyl-AL (Aliette) WDG)
2.5 lb/100 gal
2.5 to 5 lb/100 gal
mefenoxam (Fenox ME,
Mefenoxam 2, Subdue
MAXX)
See label.
Fosphite, Reliant)
See label for rates
(Pageant Intrinsic)
12 to 18 oz./100 gal
symptom development. Use of an
adjuvant/spreader sticker can aid in control.
dip
wet)
Can be
Every 2 to 3 months.
applied as a
drench or soil
surface spray.
Consult label
for specific
crops and
applications.
FUNGICIDE RESISTANCE IS POSSIBLE. Do not
apply rates of 2 fl oz more often than every 10
weeks.
Apply as a
soil drench or
foliar spray as
a preventive.
soil drench
days as needed
azoxystrobin (Heritage) 50
WG
1 to 4 oz/100 gal
foliar spray
needed.
mancozeb
(Dithane, Fore, Mancozeb
DG) (Protect DF)
1.5 lb/100 gal
OR
2.5 tsp/gal
OR
1 to 2 lb
foliar spray
First spray as buds break in
spring. Second as petals fall.
Third in midsummer.
Fourth when predormant
(after flower buds are well
formed).
See label as rate varies by product.
4 oz/100 gal
1 fl oz/gal
foliar spray
(Pageant Intrinsic)
8 to 12 oz./100 gal
foliar spray
days as needed
foliar spray
of disease.
myclobutanil
(Systhane)
(Immunox)
478
CROP
Disease
Material
Rate
Method
Schedule
Remarks
foliar spray
needed.
foliar spray
Beginning when disease
appears or during suspected
periods of disease incidence,
apply every 7 to 14 days.
Eastern Cedar
Annosus root rot
(Fomes annosus)
See PINE
Phomopsis needle
blight
50 WG
thiophanate methyl
(AllBan Flo)
(Cleary 3336) F
1 to 4 oz/100 gal
14.5 to 20 fl oz/100 gal
Elm
Dutch elm disease
(Ophiostoma ulmi)
All treatments listed must be followed for effective prevention of disease on highly valued trees.
1. Sanitation—cut down and destroy diseased trees and dead limbs.
2. Elm bark beetle control.
3. SMDC (Vapam)--kills root
grafts
1 gal SMCD/
3 gal water
6 oz/hole
4. Systemic chemical
prevention:
propiconazole (Alamo)
thiabendazole (Arbortect 20S)
See label
5. Therapeutic treatment:
thiabendazole (Arbortect)
See label
Pour in 1-in. Apply with first appearance of Not closer than 20 ft from healthy tree. Soil
diameter
disease.
temperature above 50o F. Professional applicators
holes
only.
15 in. deep,
spaced 6 to 9
in. apart in a
line between
healthy and
diseased
trees
root flare
injection
See label.
See label
Fraser Fir
Botrytis seedling
blight
chlorothalonil (Bravo)
1.5 to 2.75 pt/100
gal/acre
foliar
1 to 4 oz/100 gal
foliar spray
foliar
Apply at first sign of disease.
0.25 fl oz
+
12 fl oz/100 gal
apply 2 pt/sq ft
drench
1 to 4 oz/100 gal
foliar spray
disease.
Lophodermium
needlecast, Swiss
needlecast
azoxystrobin
(Heritage) 50 WG IF GROWN
AS ORNAMENTAL
3.2 to 8 fl oz/acre
foliar spray
than two sequential applications before rotating with
nonstrobilurin products.
azoxystrobin (Quadris) IF
GROWN AS CHRISTMAS
TREE
6 to 15.5 fl oz/acre
foliar spray
Phytophthora root
rot
cyazofamid (Segway)
soil drench
action.
Irrigate with at least ½ inch of water if rainfall does
not occur within 24 hrs. For container plants, check
label for recommended maximum drench volume
based on pot diameter.
before transplanting.
Field-grown trees in plantations.
thiophanate methyl (Cleary
3336) F
Damping-off,
postplant
mefenoxam (Subdue MAXX)
+
thiophanate methyl
(Cleary 3336) F
fosetyl-AL (Aliette WDG)
2.5 lb/100 gal
2.5 to 5 lb/100 gal/acre
mefenoxam
(Subdue MAXX)
(Subdue GR)
Fosphite, Reliant)
dip
disease.
wet)
1.5 pt/acre/50 gal/ acre
2.5 pt/acre/50 gal/acre
0.63 to 1.25 gal/50
gal/acre
drench
drench
directed soil
spray
6 to 30 lb/acre
16 to 20 lb/acre
50 to 250 lb/acre
broadcast
broadcast
broadcast
See label for rates
Soil drench or
foliar spray.
479
Make additional applications to nursery beds at 7- to
14-day intervals as long as favorable conditions
persist.
MAXX: May and September
Tank mix combination with chlorothalonil is
recommended.
Do not apply to fir growing on bottomlands or poorly
drained soils, or near surface water.
Seed beds or plug plantings.
2-0 transplants.
Field-grown trees in plantations.
GR: once in spring and again Seed beds.
in fall
2-0 transplants.
Field-grown trees in plantations. Apply 0.5 to 1 inch
water after application if rain is not expected within 3
days.
Apply as a soil drench or foliar spray as a preventive
CROP
Disease
Material
Rate
Method
Schedule
Remarks
5.5 oz/68.75 to 137.5 gal
foliar spray
Begin at bud break and
continue every 14 days until
growth stops.
1.4 lb/100 gal
foliar spray
7 to 10 days intervals
copper hydroxide (Kocide
2000)
0.75 lb/100 gal
foliar spray
7 to 14 day intervals
mancozeb (Fore) WSP
(Rainshield)
1.5 lb/100 gal
foliar spray
myclobutanil (Systhane) 40
WSP
4 oz/100 gal
foliar spray
3.2 to 8 oz/acre
foliar spray
foliar spray
nonstrobilurin products. Quadris is only for
Christmas tree applications.
60 gal/acre
foliar spray
Spray at 10- to 14-day
interval after emergence of
seedlings until July 1.
azoxystrobin (Heritage) 50
WG
1 to 4 oz/100 gal
foliar spray
Two to three applications at
14 to 28 days.
1 to 4 oz/100 gal
foliar spray
disease.
8 to 12 oz./100 gal
foliar spray
days as needed
foliar spray
Three to four applications at
10- to 14-day intervals.
Make first application at bud break.
foliar spray
Apply as needed.
Hemlock
Twig rust
(Melampsora
farlowii)
triadimefon (Bayleton) 50
WSP
Leyland Cypress
Needle blight
(Passalora,
Cercosporidium)
Lophodermium
needlecast, Swiss
needlecast
azoxystrobin
(Heritage) 50 WG IF GROWN
AS ORNAMENTAL
azoxystrobin (Quadris) IF
GROWN AS CHRISTMAS
TREE
Begin scouting last year’s infection sites for
sporulation (tufts of olive green spores) in mid-May
to mid-June. At the first sign of sporulation, make 2
applications of a systemic fungicide at 14-day
intervals. Follow with 1 or 2 applications of a
protectant fungicide (Daconil, Fore, Kocide,
Rainshield) applied at 7-day intervals. In early
August, scout trees for new infections. If sporulation
is observed, re-treat with 1 application of a systemic
fungicide 14 days later with 2 applications of a
protectant applied at 7-day intervals.
Longleaf Pine
Brown spot
(Scirrhia acicola)
Bordeaux mixture (copper
sulfate, lime, and water 8-8100)
Maple
Anthracnose
(Pageant Intrinsic)
thiophanate methyl
(AllBan Flo)
(Cleary 3336) F
10.75 to 20 fl oz/100 gal
First application at bud break. Do not make more
than three sequential applications of Heritage before
rotating with nonstrobilurin products to avoid
fungicide resistance. See label.
Oak
Anthracnose
See MAPLE
Leaf spot
MAXX)
16 fl oz/100 gal
foliar spray
Apply every 14 to 28 days.
1 to 4 oz/100 gal
foliar spray
disease.
(Pageant Intrinsic)
8 to 12 oz./100 gal
foliar spray
days as needed
foliar spray
See label
Root flare
injection
See label.
1 lb/50 sq ft of stump
surface OR liberally
cover stump surface
Sprinkle
liberally on
fresh-cut
stump
Immediately after felling tree.
4 to 16 oz/acre
foliar spray
Begin application before
infection. Repeat at 2- to 3week intervals as needed.
Use higher rate in high
hazard areas.
soil drench
action.
Wilt
(Ceratocystis)
symptom development. Use of an
adjuvant/spreader sticker can aid in control.
Pine
Annosus root rot
(Fomes annosus)
Borax, dry granular
(sodium tetraborate
decahydrate)
Fusiform rust
(Cronartium
fusiforme)
triadimefon (Bayleton 50 DF)
Phytophthora root
rot
cyazofamid (Segway)
480
To prevent infection from freshly cut stumps.
Irrigate with at least ½ inch of water if rainfall does
not occur within 24 hrs. For container plants, check
label for recommended maximum drench volume
based on pot diameter.
CROP
Disease
Material
Rate
Method
Schedule
Remarks
Pine (continued)
Phytophthora root
rot (continued)
fosetyl-AL (Aliette WDG)
2.5 lb/100 gal
2.5 to 5 lb/acre
Mefenoxam 2, Subdue
MAXX)
See label.
Fosphite, Reliant)
dip
wet)
before transplanting. Field-grown trees in
plantations.
Can be
Every 2 to 3 months.
applied as a
drench or soil
surface spray.
Consult label
for specific
crops and
applications.
FUNGICIDE RESISTANCE IS POSSIBLE. Do not
apply rates of 2 fl oz more often than every 10
weeks.
See label for rates
Apply as a
soil drench or
foliar spray as
a preventive.
1 to 2 lb/100 gal
foliar spray
1.4 lb/100 gal
foliar spray
1 to 4 oz/100 gal
foliar spray
disease.
8 to 12 oz./100 gal
foliar spray
days as needed
4 bags/100 gal
foliar spray
Spray at budswell and repeat at 7- to 14-day
intervals during cool, moist weather.
thiophanate methyl
(Cleary 3336) F
foliar spray
foliar spray
Scotch and White Pine
Needle blight
(Lophoderimum
pinastri)
maneb (Pentathlon DF)
August 15 to October 1.
Sycamore
Anthracnose
82.5 WDG
(Pageant Intrinsic)
thiophanate methyl +
mancozeb (Zyban) 70 WSB
Powdery mildew
See Crabapple
Further Information
All the following Plant Pathology Information Notes can be accessed from http://www.ces.ncsu.edu/depts/pp/notes/Ornamental/ornamental_contents.html.
Diseases of Leyland Cypress, Plant Pathology Ornamental Disease Information Note No. 17.
Dutch Elm Disease. Plant Pathology Ornamental Disease Information Note No. 18.
Holly Diseases and Their Control in the Landscape, Plant Pathology Ornamental Disease Information Note No. 7.
Phytophthora Root Rot and Its Control on Established Woody Ornamentals. Plant Pathology Ornamental Disease Information Note No. 13.
Powdery Mildew of Ornamentals and Shade Trees. Plant Pathology Ornamental Disease Information Note No. 4.
Scorch Disease on Shade Trees, Plant Pathology Ornamental Disease Information Note No. 10.
Some Common Pecan Diseases and Their Control in North Carolina. Plant Pathology Ornamental Disease Information Note No. 3.
Some Common Pine Diseases in North Carolina Landscapes and Their Control. Plant Pathology Information Note No. 192.
Dogwood Diseases. Plant Pathology Information Note No. 23.
481
Commercial Landscape and Nursery Crops Disease Control
Table 10-13. Comercial Landscape and Nursery Crops Disease Control
DISEASE
Rate of Formulation
(per 100 gallons)
Anthracnose (Colletotrichum, Gleosporium, Elsinoe, Marssonina, Mycosphaerella, and others)
1 to 4 oz/100 gal
chlorothalonil
(Daconil WeatherStik) 54F
1.4 lb/100 gal
1.375 pt/100 gal
(Concert II)
(Spectro) 90WDG
1 to 2 lb/100 gal
copper hydroxide
Repeat every 7 to 28 days. Apply at the first sign of disease. Should not be applied to certain plant species; see
label. Do not apply to apple or flowering cherry trees. May cause phytotoxicity on certain crabapple cultivars. See
label.
Reapply at 7- to 14-day intervals.
Apply as a full coverage spray. Reapply at 14 -21 day intervals. Refer to label for specific rate and application
instructions.
Repeat applications at 7- to 21-day intervals, according to label. See label for maximum seasonal application rules.
Begin at first sign of disease, and repeat at 7- to 14-day intervals. Do not tank mix copper formulations with Aliette.
Avoid contact with metal surfaces. Discoloration of blooms may occur on certain plant varieties- check label.
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
copper hydroxide + mancozeb
(Junction)
1.5 to 3.5 lb/100 gal
Phytotoxicity may occur. Reapply at 7- to 14-day intervals.
0.5-2.0 gal/100 gal
Begin at first sign of disease, and repeat at 7- to 10-day intervals. Camelot O may cause copper toxicity on some
plant species.
copper sulfate pentahydrate
(Phyton 27)
mancozeb
(Dithane) 75 DF, (Fore) 80 WSP,
(Mancozeb DG)
(Pentathlon LF)
(Protect DF)
See label
2 to 4 oz/100 gal
.
Spray on a 7 to 14 day interval while conditions are conducive to disease develepment. After two applications,
alternate with another fungicide with a different MOA for two applications
1.5 lb/100 gal
Repeat application on 7- to 10-day intervals. Use of a spreader sticker will improve performance.
0.8 to 1.6 qt/100 gal
1 to 2 lb/100 gal
Repeat application on 7- to 10-day intervals.
Repeat application on 7- to 21-day intervals. Use of a spreader sticker will improve performance.
1 to 4 oz/100 gal
Repeat in 14 to 28 days when conditions favor disease
Intrinsic)
8 to 12 oz/100 gal
Apply prior to disease development. Repeat at 7- to 14-day intervals. Make no more than two sequential applications.
Do not expose petunia or impatiens in flower or wintercreeper or nine bark to spray or drift as injury may occur.
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
(SysTec 1998) FL
thiophanate-methyl + mancozeb
(Zyban) WSB
10.75 to 20 fl oz/100 gal
20 fl oz/100 gal
24 oz (4 bags) /100 gal
Apply as buds break or at first sign of disease. Repeat application on 7- to 14-day intervals.
Spray every 7 to 14 days. Use preventively. Begin applications when conditions favor fungal infection and before
disease symptom development.
Bacterial Leaf Spot (Pseudomonas, Xanthomonas)
2 to 8 qt/100 gal
copper hydroxide
Begin applications when conditions favor disease development prior to the onset of disease. Thorough coverage is
essential. Repeat at 7-day intervals.
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
(Junction)
1.5 to 3.5 lb/100 gal
0.5-2.0 gal/100 gal
plant species.
(Phyton 27)
See label
didecyl dimethyl ammonium
chloride (KleenGrow)
0.06 to 0.38 fl. oz. per
gallon of water
.
Apply starting at week 3 or earlier if conditions are favorable for disease. Use a watering device to sprench the top
and bottom of the leaves and stems, avoiding flowers in full bloom, every 14 days to prevent the spread of spores
and the build-up of organic material. Remove severely infected plants and disinfect the area with 1.0 fl. oz.
KleenGrow per gallon of water.
Black Root Rot (Thielaviopsis basicola)
etridiazole + thiophanate-methyl
(Banrot) 8G
After application, rake in or lightly cultivate soil.
(Banrot) 40W
Broadcast 8 to 12
lb/1,000 sq ft
6 to 12 oz/100 gal
1 to 2 oz/100 gal
Apply as a drench at transplanting as a preventive. If needed, re-treat transplants 21 to 28 days after initial
application. Do not apply as a seed or soil drench to impatiens or New Guinea impatiens.
necessary. Protects against Thielaviopsis and Pythium but is not as effective against Thielaviopsis as thiophanatemethyl-only products that have a higher concentration of active ingredient.
482
DISEASE
Rate of Formulation
(per 100 gallons)
Black Root Rot (continued)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F, (3336) F
(OHP 6672) 50WP, (T-Storm)
50WSB
(SysTec 1998) FL
(T-Storm Flowable), OHP 6672
(4.5L)
7.5 to 20 oz/100 gal
12 to 16 oz/100 gal
20 fl oz/100 gal
1 to 4 oz
Apply as a heavy spray or drench at the rate of 1/2 to 2 pints per sq ft. Repeat at 4- to 8-week intervals.
Apply 8 oz as a drench or directed spray after seeding, or apply 12 to 16 oz after transplanting. Repeat at 21- to 28day intervals.
Apply 1 to 3 pt/sq ft after transplanting to thoroughly soak growing medium. Repeat at 21-to 28-day intervals.
Apply as soil drench at 2- to 4-week intervals. Use higher rate under heavy disease pressure. For use in
greenhouses, shadehouses, and nurseries.
Black Rot of Bulb Crops (Sclerotinia sclerotiorum)
PCNB
(Terraclor)
(Revere) 10G
5 to 9.75 fl oz/100 gal
40 lb/sq ft
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
10.75 to 20 oz/100 gal
50WSB
(SysTec 1998) FL, OHP 6672
(4.5L)
12 to 16 oz/100 gal
Spread evenly on soil and mix into upper 6 to 7 in. of soil.
Apply late Spring or at first sign of disease. Repeat every 7-14 days as needed during disease period.
20 fl oz/100 gal
2 to 8 qt/100 gal
Begin applications when conditions favor disease development, prior to the onset of disease. Thorough coverage is
chlorothalonil
(Echo) 90DF
1 lb/100 gal
0.875 lb/100 gal
Apply at bud break. Repeat applications at 7- to 14-day intervals. Knockout roses are sensitive to chlorothalonil.
Black Spot-Rose (Diplocarpon rosae)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
50WSB
(SysTec 1998) FL, (T-Storm
Flowable), OHP 6672 (4.5L)
(Zyban) WSB
10.75 to 20 oz/100 gal
12 to 16 oz/100 gal
20 fl oz/100 gal
24 oz (4 bags)/100 gal
Botrytis Blight (Gray Mold)
chlorothalonil (Daconil Ultrex,
Daconil Weatherstik)
2 to 8 qt/100 gal
1.4 lb/100 gal
4 to 6 oz/100 gal
fenhexamide (Decree)
See label
2 to 4 oz/100 gal
iprodione
(Chipco 26GT)
mancozeb (Dithane, Fore,
Mancozeb)
1 to 2.5 qt/100 gal
1 to 2.5 qt/100 gal
1.5 lb/100 gal
Repeat applications at 7- to 14-day intervals.
Spray on a 7 to14 day interval while conditions are conducive to disease develepment. After two applications,
Repeat applications at 7- to 14-day intervals. Do not make more than two consecutive applications of product.
Spray to runoff at 7- to 14-day intervals. Do not make more than two consecutive applications of Medallion before
rotating to another effective product with a different mode of action.
Apply at 7- to 14-day intervals. Limit total applications to a maximum of 4 per year.
Addition of a nonionic surfactant will improve performance. Re-treat at 7- to 10-day intervals.
1 to 4 oz/100 gal
Intrinsic)
8 to 12 oz/100 gal
Cylindrocladium Stem Canker or Root Rot
chlorothalonil
(Chlorothalonil DF)
(Chlorostar VI, Daconil Weather
Stik, Echo 720, Manicure 6F)
(Exotherm Termil)
See label
1.9 pt/100 gal
1.37 pt/100 gal
1 3/8 pt/100 gal
1.4 lb/100 gal
1.25 lb/100 gal
1 can/1,000 sq ft
Repeat at 7- to 14-day intervals. Apply to foliage when plants are dry or nearly dry.
(Spectro) 90WDG
1.0 to 2.15 lb per 100
gallons
For best results use spray mixture the same day it is prepared. Spray uniformly over the area to be treated with a
properly calibrated power sprayer, apply as a full coverage spray to run-off when conditions are favorable for disease
development.
2 to 4 oz/100 gal
For stem diseases ensure full spray coverage of all stems and inner areas of the plant to the soil/media. Apply on a 7
to 14 day interval while conditions are conducive to disease develepment. After two applications, alternate with
another fungicide with a different MOA for two applications. No drench applications on label.
483
DISEASE
Rate of Formulation
(per 100 gallons)
Cylindrocladium Stem Canker or Root Rot (continued)
1 to 2 oz/100 gal
Completely drench the growing medium. Repeat at 21- to 28-day intervals. Two applications per year when
conditions favor disease development are usually adequate for control.
Intrinsic)
8 to 12 oz/100 gal
Apply prior to disease development. Completely drench the growing medium. Repeat at 7- to 14-day intervals. Make
no more than two sequential applications. Do not expose petunia or impatiens in flower or wintercreeper or nine bark
to spray, as injury may occur.
Begin applications 14 to 21 days prior to when disease is expected, or at very first sign of disease. Not for use in
greenhouses.
7.5 to 20 fl oz/100 gal
Apply as drench or heavy spray at 0.5 to 2 pints per sq ft. Repeat at 4- to 8-week intervals.
Apply 8 oz after seeding or sticking, or 12 to 16 oz after transplanting as a drench or directed spray at a rate that
thoroughly soaks the growing media through the root zone. Repeat every 21 to 28 days.
Apply as a drench or heavy spray at a rate of 1 to 3 pints per sq ft. Repeat at 21- to 28-day intervals.
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
(OHP-6672) 50WP, (T-Storm)
50WSB
(SysTec 1998) FL
(T-Storm Flowable), (OHP 6672)
4.5L
12 to 16 oz/100 gal
20 fl oz/100 gal
See label
Can be used as a cutting soak or soil drench.
Daylily Leaf Streak (Aureobasidium microstictum)
82.5WDG
1.4 lb/100 gal
mancozeb
(Dithane) 75 DF, (Fore) 80 WSP
(Protect DF)
thiophanate-methyl (Cleary 3336) F
1.5 lb/100 gal
1 to 2 lb/100 gal
Apply early in the spring as new growth emerges and before disease symptoms appear. Make three to four
applications at 14-day intervals.
Daylily Rust (Puccinia hemerocallidis)
Alternately apply a systemic fungicide from Category 1 with a protective fungicide from Category 2 to protect new foliage as it emerges. Re-treat at 7- to 14-day intervals.
Category 1 Systemics
flutolanil (Contrast)
triadimefon
(Bayleton)
(Strike) 25 WDG
trifloxystrobin (Compass)
1 to 4 oz/100 gal
3 oz/100 gal
1 PVA packet/550 to
1,100 gal
4 oz/100 gal
Bayleton cannot be used on plants being grown for sale or other commercial use.
Strike is for commercial greenhouse and nursery use only.
2 to 4 oz/100 gal
Category 2 Protectants
1.4 lb/100 gal
mancozeb (Fore)
1.5 lb/100 gal
Downy Mildew (Bremia, Pseudoperonospora, Peronospora, Plasmopara spp.)
1 to 2 oz/100 gal
(bedding plants)
2 to 4 oz/100 gal (rose)
copper hydroxide
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
(Phyton 27)
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
0.5-2.0 gal/100 gal
See label
Apply every 7 to 14 days prior to infection. Do not apply 2-oz rate on less than 14-day intervals. May damage
snapdragons; use 1 oz rate and rotate. Apply every 7 to 21 days on rose during periods of active plant growth and
prior to dormancy.
Avoid contact with metal surfaces. Discoloration of blooms may occur on certain plant varieties- check label. To
avoid phytotoxicity, do not use any copper compound on alyssum.
plant species.
cyazofamid (Segway)
2.1 to 3.5 fl oz/100 gal
Apply on 14 to 21 day intervals using another registered fungicide with a different mode of action. Apply sufficient
dimethomorph (Stature DM)
6.4 to 12.8 oz/100 gal
Apply at first sign of disease. Apply to obtain complete coverage of flowers, foliage, and stems. Repeat at 10- to 14day intervals throughout the production cycle. For use on greenhouse and nursery-grown ornamentals.
dimethomorph + ametoctradin
(Orvego)
Apply on 10 to 14 day intervals using another registered fungicide with a different mode of action. Apply sufficient
1.25 to 4 lb/100 gal
(bedding plants)
2.5 lb/100 gal (roses)
Systemic. Apply prior to disease development. Repeat as necessary, but do not make more than one application
every 14 days.
mancozeb
(Dithane) 75 DF
(Protect DF)
mefenoxam
Subdue MAXX)
(Subdue Gr)
phosphorous acid (Alude, Reliant)
1.5 lb/100 gal
1 to 2 lb/100 gal
See label for rates
See label
Reapply in 7 to 21 days.
This product can also be used on vegetables sold to the retail market in GH with permanent flooring. Apply prior to
disease development. Repeat at 7- to 14-day intervals. Make no more than two sequential applications.
Apply Subdue MAXX as a foliar spray or soil drench treatment.
Apply Subdue GR as a soil surface or soil/planting media incorporation treatment.
Apply prior to disease development. Spray to thoroughly wet all foliage. Repeat at 14- to 21-day intervals.
484
DISEASE
Rate of Formulation
(per 100 gallons)
Downy Mildew (continued)
Intrinsic)
(Zyban) WSB
4 pt/100 gal
8 to 12 oz/100 gal
Apply as a foliar spray prior to disease onset, and repeat at 14-day intervals.
Apply at first sign of disease, and repeat at 7-day intervals.
Entomosporium Leaf Blight
azoxystrobin (Heritage) 50WDG
chlorothalonil
(Concert II)
(Spectro 90)
myclobutanil
(Eagle) 20EW
(Eagle) 40WP
(Systhane) 40 WSP
triadimefon
(Bayleton) 50WSP
(Strike) 25WDG
1 to 4 oz/100 gal
1.4 lb/100 gal
1 to 2 lb/100 gal
3 to 6 oz/100 gal
4 oz/100 gal
1 PVA packet/137.5 to
275 gal
8 to 16 oz/100 gal
12 fl oz/100 gal
Spray at budbreak, and repeat at 7- to 28-day intervals as needed. To avoid fungicide resistance, make no more
than three sequential applications of Heritage before rotating with nonstrobilurin products.
Begin applications at budbreak, and continue every 7 to 14 days.
Apply as a full coverage spray. Reapply at 14 to 21 day intervals. Refer to label for specific rate and application
instructions.
Spray at a minimum of 7-day intervals. Apply when foliage is dry.
In early spring as growth starts, spray every 14 to 21 days until growth is fully expanded. May be phototoxic with
repeated applications. Bayleton is not for plants offered for sale or other commercial use.
Fireblight (Erwinia amylovora)
copper hydroxide
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
(Junction)
1.5 to 3.5 lb/100 gal
(Phyton 27)
See label
See label for timing of application.
fosetyl-Al (Aliette)
2.5 lb/100 gal
See label for timing of application.
streptomycin sulfate
(Agri-mycin 17)
0.5 lb/100 gal
See label.
Flower Blight. See Petal Blight.
Fungal Leaf Spots (Alternaria, Cercospora, Cylindrosporium, Phyllosticta, Septoria) Consult product labels for specific fungi controlled
1 to 4 oz/100 gal
chlorothalonil
(Daconil Ultrex)
(Daconil WeatherStik)
1.4 lb/100 gal
1.375 pt/100 gal
(Concert II)
(Spectro) 90WDG
1 to 2 lb/100 gal
copper hydroxide
Repeat every 7- to 28-days. Apply at the first sign of disease as new growth buds out.
instructions.
Repeat applications at 7- to 21-day intervals depending on plant treated; see label.
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
(Junction)
1.5 to 3.5 lb/100 gal
0.5-2.0 gal/100 gal
plant species.
(Phyton 27)
See label
2 to 6 oz/100 gal
mancozeb
Mancozeb DG)
(Pentathlon LF)
(Protect DF)
1.5 lb/100 gal
1.2 qt/100 gal
1 to 2 lb/100 gal
1 to 4 oz/100 gal
myclobutanil
(Eagle) 40WP
(Systhane) 40WSP
3 to 6 oz/100 gal
4 oz/100 gal
Repeat application at 7- to 10-day intervals. Addition of a spreader sticker will improve performance.
Apply as a protectant every 10 to 14 days.
485
DISEASE
Rate of Formulation
(per 100 gallons)
Fungal Leaf Spots (continued)
Intrinsic)
8 to 12 oz/100 gal
Do not expose petunia, or impatiens in flower or wintercreeper, or nine bark to spray or drift as injury may occur.
thiophanate-methyl
(AllBan Flo)
(Cleary’s 3336) F
(SysTec 1998) FL
(Zyban) WSB
10 to 14.5 fl oz/100 gal
20 fl oz/100 gal
24 oz (4 bags) /100 gal
triadimefon (Bayleton, Strike)
Apply at first sign of disease. Repeat application at 7- to 14-day intervals.
See label
disease symptom development. Use of an adjuvant/spreader sticker can aid in control.
Fusarium Root and Crown Rot
Directed spray: 1 to 4
Repeat every 7 to 21 days.
oz/100 gal
Drench: 0.2 to 0.9 oz/100 Apply 1 to 2 pt of solution per sq ft every 7 to 28 days.
gal
2 to 4 oz/100 gal
another fungicide with a different MOA for two applications.
1 to 2 oz/100 gal
Wet entire medium. Reapply at 21- to 28-day intervals. May cause phytotoxicity when applied to impatiens, New
Guinea impatiens, and geraniums.
thiophanate-methyl
(AllBan Flo)
(Cleary’s 3336) G
(Cleary 3336) F
(SysTec 1998) FL
Intrinsic)
7.5 to 20 fl oz/100 gal
22 to 30 lb/1,000 sq ft
Apply as drench or heavy spray after transplanting. Repeat at 2- to 4-week intervals. For preventative control,
incorporate into media prior to planting or as a broadcast, or make an over the top application after seeding or
transplanting. For curative control, apply when disease first appears. Repeat every 21 to 28 days.
Drench: 8 to 16 fl oz/100 Apply after seeding or transplanting at a rate to thoroughly soak growing medium. Repeat every 21 to 28 days.
gal
Apply as drench or heavy spray after transplanting. Repeat at 2- to 4-week intervals.
12 to18 oz/100 gal
4 to 8 oz/100 gal
Apply soil drenches at weekly intervals. Use higher rate under heavy disease pressure.
Apply every 7 to 14 days. Use preventively. Begin applications when conditions favor fungal infection and before
disease symptom development. The stem areas of the plant must be thoroughly covered using spray to runoff.
Gray Mold. See Botrytis Blight.
Iris Leaf Spot (Didymellina macrosopora/Mycosphaerella macrospora)
2 to 4 oz/100 gal
chlorothalonil
(Daconil Ultrex)
1.4 lb/100 gal
1.375 pt/100 gal
mancozeb
Mancozeb DG)
(Pentathlon LF)
(Protect DF)
1.5 lb/100 gal
0.8 to 1.6 qt/100 gal
1 to 2 lb/100 gal
myclobutanil
(Eagle) 20EW
(Eagle) 40WP
(Systhane) WSP
12 fl oz/100 gal
6 oz/100 gal
8 oz/100 gal
Apply every 7 to 21 days.
Apply to new growth at 7- to 14-day intervals in spring.
Addition of a spreader sticker will improve performance.
Repeat applications on 7- to 10-day intervals.
Apply on a 10- to 14-day schedule to new growth in spring.
Kabatina Twig Blight
Apply at 7- to 14-day intervals. Disease not easily controlled. Fall applications may reduce disease the following year.
Leaf and Flower Gall (Exobasidium ssp.)
triadimefon
(Bayleton) 50WSP
(Strike) 25W
ferbam (Granuflo)
Begin applications at bud break, and apply at 10-day intervals. Bayleton cannot be used on plants grown for sale or
1 PVA packet (11 oz/550 other commercial use. Strike is for use in commercial nurseries, garden centers, and greenhouses only.
gal)
4 oz/100 gal
1 to 1.5 lb/100 gal
Apply to plants, flowers, and litter around plants at 3- to 4-day intervals during bloom.
Petal or Flower Blight of Azalea, Rhododendron, or Camellia (Ovulinia ssp., Ciborinia camelliae, Sclerotinia camelliae)
mancozeb
(Mancozeb DG)
(Protect DF)
1 to 2 lb/100 gal
myclobutanil
(Eagle) 40WP
(Systhane) 40WSP
3 to 6 oz/100 gal
4 oz/100 gal
1.5 lb/100 gal
Beginning when flowers start to show color, spray two or three times each week during bloom. Direct spray into
flowers and thoroughly spray ground under bushes.
Beginning when flowers start to show color, spray every 10 to 14 days.
propiconazole (Banner MAXX)
Spray every 21 days during bloom.
Apply 2 to 3 times per week into the flowers as they open and develop.
486
DISEASE
Rate of Formulation
(per 100 gallons)
Petal or Flower Blight of Azalea, Rhododendron, or Camellia (continued)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
50WSB
10.75 to 20 oz/100 gal
8 to 16 oz/100 gal
Apply as flowers open. Repeat every 7 to 14 days.
20 fl oz/100 gal
triadimefon
(Bayleton) 50WSP
1 PVA packet (11
oz/137.5 to 275 gal)
8 to 16 oz/100 gal
(Strike) 25WDG
Make one application as first flower buds show color. Spray later varieties as they show color at 7- to 14-day
intervals.
Bayleton cannot be used on plants being grown for sale or other commercial use. Strike is for use in commercial
nurseries, garden centers, and greenhouses only.
Phomopsis Twig Blight
1 to 4 oz/100 gal
Apply at the first sign of disease, as new growth buds out. Repeat every 7 to 28 days.
2 to 4 oz/100 gal
mancozeb
(Mancozeb DG)
(Pentathlon LF)
(Protect DF)
1.5 lb/100 gal
Addition of a spreader sticker will improve performance. Repeat application on 7- to 10-day intervals.
0.8 to 1.6 qt/100 gal
1 to 2 lb/100 gal
For junipers, make first application as soon as new growth is observed. Repeat application every 14 to 21 days
during period of active plant growth.
Intrinsic)
8 to12 oz/100 gal
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
(T-Storm) 50WSB
14.5 to 20 fl oz/100 gal
24 oz/100 gal
20 fl oz /100gal
(Zyban)
6 bags (36 oz/75 gal)
Apply when symptoms first appear. Re-treat every 7 to 14 days as needed during disease period.
Apply in spring; repeat every 7 to 10 days.
Phytophthora and Pythium Root Rot
cyazofamid (Segway)
dipotassium phosphonate +
dipotassium phosphate (Biophos)
256 fl oz/100 gal
dimethomorph (Stature DM) 50W
6.4 to 12.8 oz/100 gal
dimethomorph + ametoctradin
(Orvego)
etridiazole
(Truban) 30WP
(Terrazole) 35WP
11 to 14 fl oz
6 to 12 oz/100 gal
See label
fosetyl-Al (Aliette) 80WP
See label
Reliant)
Apply as a soil drench or foliar spray as a preventative.
Apply at 10- to 14-day intervals through production cycle. When applied as a drench, use enough solution to wet root
zone of the plant. No more than two applications of Stature DM can be applied consecutively in a crop.
Not effective on Pythium root rot.
NOT LABELED FOR PYTHIUM. Apply on 10 to 14 day intervals using another registered fungicide with a different
mode of action. Apply sufficient volume to wet all foliage until runoff (normally 50 to 100 gallons per acre).
3 to 10 oz/100 gal/400 sq Apply in sufficient volume to saturate the soil mixture. Water in immediately after application. Repeat at 4- to 12-week
ft
intervals.
3.5 to 10 oz/100 gal
(Banrot) 40WP
(Banrot) 8G
Mefenoxam 2, Subdue MAXX,
Subdue GR)
Apply at 14 to 21 day intervals using another registered fungicide with a different mode of action. Irrigate with at least
½ inch of water if rainfall does not occur within 24 hrs. For container plants, check label for recommended maximum
drench volume based on pot diameter.
See label
Apply in sufficient volume to saturate the soil mixture. Irrigate immediately with additional water equal to at least half
the volume of the fungicide drench. Re-treat at 4- to 12-week intervals. For use in nursery crops. See label.
MUST ALWAYS BE TANK MIXED WITH THE LABEKED RATE OF ANOTHER FUNGIIDE WITH A DIFFERENT
MODE OF ACTION. Apply before disease development. Use higher rate when treating plants with high potential for
disease. Reapply after 14 to 28 days.
Can be applied as a preventative foliar or drench application. Can be incorporated into the soil for control of
Phytophthora species.
This product can also be used on vegetables sold to the retail market in GH with permanent flooring. Apply prior to
disease development. Repeat at 7- to 14-day intervals. Make no more than two sequential applications.
Can be applied as a drench or soil surface spray or soil incorporation treatment (granular). Consult label for specific
crops and applications. Repeat at 2- to 3-month intervals. Do not apply rates of 1.25 fl oz per 100 gal more often than
every 3 months.
See label for rates
See label
propamocarb (Banol)
See label
Do not use for field-grown ornamentals.
Powdery Mildew
1 to 4 oz/100 gal
Apply only as a preventive. Spray every 7 to 28 days as needed. To avoid fungicide resistance, make no more than
two sequential applications of Heritage before rotating with nonstrobilurin products. Do not apply to apple, flowering
cherry, or crabapple. See label.
2 to 8 qt/100 to 300 gal
essential. Repeat at 3- to 10-day intervals.
487
DISEASE
Rate of Formulation
(per 100 gallons)
chlorothalonil
1.4 lb/100 gal
(Concert II)
0.5-2.0 gal/100 gal
(Phyton 27)
Spray at 7- to 14-day intervals. Applications made during bloom may damage flowers.
instructions.
plant species.
See label
2 to 6 oz/100 gal
1 to 4 oz/100 gal
myclobutanil
(Eagle) 20EW
(Eagle) 40WP
(Systhane) 40WSP
8 fl oz/100 gal
3 to 6 oz/100 gal
4 oz/100 gal
potassium bicarbonate (Kaligreen)
1 to 3 lb/100 gal
See label for appropriate rate and application intervals. For application in field nurseries and landscape plantings.
Intrinsic)
6 to12 oz/100 gal
Apply every 14 for a total of three applications at the first sign of disease.
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
50WSB
(SysTec 1998) FL
(T-Storm Flowable), OHP 6672
(4.5L)
(Zyban) WSB
triadimefon
(Bayleton) 50WSP
(Strike) 25WDG
10 to 20 oz/100 gal
8 to 16 oz/100 gal
10 fl oz/100 gal
20 fl oz/100 gal
24 oz (4 bags) /100 gal
Apply when disease first appears and repeat every 7-14 days. Rotations with other effective products are
recommended.
Apply when disease first appears and repeat every 7-14 days. Rotations with other effective products are
recommended. Apply when disease first appears and repeat every 7-14 days as needed during disease period.
Apply at first sign of disease. Repeat at 7-day intervals.
Spray as needed. Bayleton cannot be used on plants for sale or other commercial use. Strike is for greenhouse and
1 PVA packet (11 oz/550 nursery use only.
to 1,100 gal)
2 to 4 oz/100 gal
trifloxystrobin (Compass O)
2 to 4 oz/100 gal
Apply to point of drip before disease is detected. Apply at 7- to 14-day intervals. Rotate to another nonstrobilurin
product after each application.
disease symptom development. Use of an adjuvant/spreader sticker can aid in control.
Rhizoctonia Aerial Blight (Rhizoctonia solani)
1.4 lb/100 gal
2 to 6 oz/100 gal
1 to 2 oz/100 gal
flutolanil
(Contrast) 70WSP
(Prostar) 70WP
3 to 12 oz/100 gal
iprodione
(Chipco 26019 N/G)
1.0 to 2.5 qt/100 gal
1.0 to 2.5 qt/100 gal
Spray plants to ensure thorough coverage Repeat at 7- to 14-day intervals. Do not make more than four applications
per crop per year.
polyoxin D zinc salt (Endorse 2.5
WP)
1.1 to 2.2 lb/100 gal
Apply as a foliar spray every 7 to 10 days. Apply prior to disease development and when conditions are conducive for
disease.
Intrinsic)
12 to18 oz/100 gal
4 to 8 oz/100 gal
Apply when disease symptoms first appear. Repeat at 7- to 14-day intervals during disease period.
Make initial application prior to or at first sign of disease. Use the higher rate under heavy disease pressure. Repeat
at 7- to 14-day intervals.
Rhizoctonia Stem and Root Rot (Rhizoctonia solani)
directed spray: 1 to 4
oz/100 gal
drench: 0.2 to 0.9 oz/100
gal
Apply as a directed spray every 7 to 21 days as needed. To avoid fungicide resistance, make no more than three
sequential applications of Heritage before rotating with nonstrobilurin products.
Apply 1 to 2 pt of solution per sq ft surface area every 7 to 28 days as a preventative drench treatment. Do not
exceed 2 oz/100 gal on impatiens or pansy.
(Spectro) 90WDG
1 to 2 lb/100 gal
Retreat at 7-day intervals. Apply as a spray only. Do not apply more than once to green or variegated Pittosporum
due to risk of phytotoxicity. Apply when foliage is dry.
2 to 4 oz/100 gal
(Banrot) 40W
16 to 12 oz/400 sq ft
necessary.
488
DISEASE
Rate of Formulation
(per 100 gallons)
Rhizoctonia Stem and Root Rot (continued)
fludioxonil (Medallion) 50W
1 to 2 oz/100 gal
Apply as a drench at seeding or transplanting. Apply sufficient mix to wet the upper one-half of the growing medium.
Make only one application to seedling crop. If needed, re-treat transplants 21 to 28 days after initial application.
Do not apply as a seed or soil drench to impatiens or New Guinea impatiens. May cause stunting or chlorosis on
some geranium cultivars.
See label for maximum amounts that can be applied per year.
flutolanil
(Contrast) 70WSP
(Prostar) 70WP
3 to 6 oz/100 gal
Apply drench according to label. Repeat 21 to 28 days after initial application. Make no more than four applications
per year to ornamental plantings.
iprodione
(Chipco 26019 N/G)
6.5 oz/100 gal
13 fl oz/100 gal
Apply 1 to 2 pints per sq ft at seeding or transplanting. Do not apply as a drench on impatiens or pothos. Repeat
every 14 days. Do not make more than six applications per year. Do not use on Spathiphyllum.
1 to 4 oz/100 gal
4 to 8 oz/100 gal
See label for amount to apply. One repeat application can be made 4 to 6 weeks later, if necessary.
polyoxin D zinc salt (Endorse 2.5
WP)
Intrinsic)
1.1 to 2.2 lb/100 gal/acre Apply as a foliar spray every 7 to 10 days. Apply as a drench every 14 to 28 days.
12 to18 oz/100 gal
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
7.5 to 20 oz/100 gal
(OHP-6672) 50WP
12 to 16 oz/100 gal
Apply as a soil drench or directed spray to thoroughly soak growing media through the root zone after seeding or
transplanting at 21- to 28-day interval.
Apply 1 to 3 pt/sq ft after transplanting to thoroughly soak growing medium. Repeat every 21 to 28 days.
trifloxystrobin (Compass)
0.5 oz/100 gal
4 to 8 oz/100 gal
Apply as a drench to wet upper half of the growing media. Apply at seeding, transplanting, and at 21- to 28-day
intervals thereafter. May injure petunia, violet, and New Guinea impatiens.
Rust (also see Daylily Rust)
chlorothalonil
(Daconil Ultrex)
(Echo) 90DF
(Concert II)
1 to 4 oz/100 gal
commercial rose
production: 1.6 to 8 oz
1.4 lb/100 gal; 1 lb for
roses
1.4 lb/100 gal; 0.875 oz
for roses
Apply at 7- to 28-day intervals. Do not make more than three sequential applications of Heritage before alternating
with a nonstrobilurin fungicide. Should not be applied to certain plant species; see label.
Apply when foliage and flowers are dry. Repeat at 7- to 14-day intervals. Apply to hydrangea foliage only. Avoid
application during bloom period on plants where flower injury is unacceptable.
instructions. Higher rate listed for Melampsora occidentalis --use 69 fl oz/100gal.
(Spectro) 90
1 to 2 lb/100 gal
Apply when foliage and flowers are dry, or nearly dry. Re-treat at 7-day intervals. Do not exceed 50.6 lb per acre
during one season for field-grown ornamentals.
flutolanil (Contrast) 70 WSP
3 to 6 oz/100 gal
mancozeb
(Dithane, Mancozeb)
(Protect DF)
1.5 lb/100 gal
1 to 2 lb/100 gal
Begin at first sign of disease.
Apply at 7- to 21-day intervals. To improve performance, add 2 to 4 oz of a spreader-sticker.
1 to 4 oz/100 gal
myclobutanil
(Eagle 40WP)
(Eagle 20WE
(Systhane) 40WSP
3 to 6 oz/100 gal
6 to 12 oz/100 gal
4 oz/100 gal
See label
See label
Apply on a protectant application schedule at 10- to 14-day intervals.
Apply at 7- to 14-day spray intervals. Trial first on open blooms. To control existing disease, apply on a 7-day
schedule until disease pressure is eliminated. Not for impatiens, carnation, or hibiscus.
See label. Do not use in greenhouses.
Intrinsic)
12 to18 oz/100 gal
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
50WSB
OHP 6672 (4.5L)
10.75 to 20 oz/100 gal
12 to 16 oz/100 gal
20 fl oz/100 gal
For use on crabapples. Do not use treated crabapples for food.
(Zyban) WSB
See label
For use on crabapples.
triadimefon
(Bayleton)
(Strike)
See label
Spray to the point of drip as needed. See label for spray interval.
Bayleton is not for use on plants being grown for sale.
2 to 8 oz/100 gal
Apply prior to, or at first sign of disease. Repeat at 7- to 14-day intervals.
Scab (Cladosporium, Fusicladium, Spilocea, Venturia)
mancozeb (Dithane, Fore,
Mancozeb)
1.5 lb/100 gal
1 to 4 oz/100 gal
Begin spraying at first sign of disease, and repeat at 7- to 10-day intervals.
489
DISEASE
Rate of Formulation
(per 100 gallons)
Scab (continued)
myclobutanil (Systhane) 40WSP
4 oz/100 gal
Intrinsic)
thiophanate-methyl
(AllBan Flo)
(Cleary 3336) F
(SysTec 1998) FL
(Zyban) WSB
See label
8 to12 oz/100 gal
10.75 to 20 fl oz/100 gal
20 fl oz/100 gal
24 oz (4 bags)
See label. Do not use in greenhouses.
Spray at bud break. Repeat three to four times at 7- to 14-day intervals.
Repeat at 7-day intervals.
Sclerotinia Stem Rot (Sclerotinia sclerotiorum)
chlorothalonil (Daconil Ultrex) 82.5
WDG
1.4 lb/100 gal
2 to 4 oz/100 gal
1 to 4 oz/100 gal
PCNB
(Revere) 10G
(Terraclor) 75W
Repeat at 7- to 14-day intervals when conditions favor disease.
20 lb/1,000 sq ft
Apply 1 wk prior to planting; spread on soil surface and mix into soil at a 4-in. depth.
See label for amount to apply. One repeat application may be made 4 to 6 weeks later.
Intrinsic)
12 to18 oz/100 gal
Shot Hole (Blumeriella, Coccomyces fungal and bacterial)
(Junction)
mancozeb
(Pentathlon DF)
(Protect DF)
1.5 to 3.5 lb/100 gal
1 to 2 lb/100 gal
Begin at first sign of disease. Repeat at 7- to 14-day intervals.
Begin applications at first sign of disease. Apply at 7- to 10-day intervals.
Begin applications at first sign of disease. Apply at 7- to 21-day intervals.
Begin when disease first appears, and repeat every 7 to 14 days.
Southern Stem Blight (Sclerotium rolfsii)
directed spray: 1 to 4
oz/100 gal
drench: 0.2 to 0.9 oz/100
gal
Apply every 7 to 21 days. Can be used in outdoor nurseries, retail nurseries, residential and commercial landscape
areas.
Apply 1 to 2 pt solution per square foot surface area every 7 to 28 days, prior to infection. Apply to container-grown
ornamentals only.
2 to 4 oz/100 gal
flutolanil
(Contrast) 70WSP
(Prostar) 70WP
3 to 6 oz/100 gal
Drench at 21- to 28-day intervals. Uses 1 pt per sq ft or 2 pt for depths greater than 4 in. See label for container
rates. For use in outdoor container and field-grown stock. Make no more than 4 applications per year to nursery
ornamental plantings.
3.25 to 6.5 lb/1,000 sq ft Apply in sufficient water to ensure uniform ground coverage prior to planting, and thoroughly incorporate to a depth
of 6 to 7 in. For use in nursery and landscape plantings.
Volutella Blight
chlorothalonil
1.4 lb/100 gal
1.375 pt/100 gal
copper hydroxide
(Champ WG)
(Nu-Cop) 50DF
(CuPRO 2005)
0.5 lb/100 gal
1 lb/100 gal
0.75 to 2.0 lb/100 gal
(Junction)
1.5 to 3.5 lb/100 gal
(Phyton 27)
mancozeb
Mancozeb DG)
(Pentathlon LF)
(Pentathlon DF)
(Protect DF)
See label
2.0 lb/50 gal/5,000 sq ft
of bed
0.8 to 1.6 pt/100 gal
1 to 2 lb/100 gal
3 to 4 lb/100 gal/10,000
sq ft of bed
Start at first sign of disease, and apply at 10- to 14-day intervals.
Use a drenching spray. Start at first sign of disease, and apply at 10- to 14-day intervals.
Use a drenching spray. Start at first sign of disease, and apply at least 5 applications at 10- to 14-day intervals.
490
DISEASE
Rate of Formulation
(per 100 gallons)
Apply at 7-day intervals while disease is prevalent.
Volutella Blight (continued)
(Zyban) WSB
Further Information
Boxwood blight links http://plantpathology.ces.ncsu.edu/pp-ornamentals/
All Plant Pathology Disease Notes for Ornamentals can be accessed from
http://www.ces.ncsu.edu/depts/pp/notes/Ornamental/ornamental_contents.html.
Holly Diseases and Their Control in the Landscape. Plant Pathology Ornamental Disease Information Note 7,
http://www.ces.ncsu.edu/depts/pp/notes/oldnotes/od7.htm
Nematodes and Their Control in Woody Ornamentals in the Landscape. Plant Pathology Information Note 63,
http://www.ces.ncsu.edu/depts/pp/notes/oldnotes/no63.htm
Phytophthora Root Rot and Its Control on Established Woody Ornamentals. Plant Pathology Ornamental Disease Information Note 13,
http://www.ces.ncsu.edu/depts/pp/notes/oldnotes/odin13/od13.htm
Rose Diseases and Their Control in the Home Garden. Plant Pathology Ornamental Disease Information Note 2,
http://www.ces.ncsu.edu/depts/pp/notes/Ornamental/odin002/odin002.htm
Juniper Diseases. Plant Pathology Ornamental Disease Information Note 15, http://www.ces.ncsu.edu/depts/pp/notes/oldnotes/od15.htm
Entomosporium Leaf Spot on Redtip. Plant Pathology Ornamental Disease Information Note 11,
http://www.ces.ncsu.edu/depts/pp/notes/Ornamental/odin011/odin011.htm
Rhododendron Diseases. Plant Pathology Ornamental Disease Information Note 12, http://www.ces.ncsu.edu/depts/pp/notes/oldnotes/od12.htm
Azalea Diseases. Plant Pathology Ornamental Disease Information Note 16.
Copies of these publications are available from your local Cooperative Extension Center.
491
Relative Effectiveness of Various Chemicals for Disease Control in Woody Ornamentals
Relative control rating: G = Good (100-80%); F = Fair (79-50%); P = Poor (49-0%)
G, N, L
F DR
Spectro
Thiophanate methyl
+ Chlorothalonil
1+M5
G, N, L
Chipco
26019/26 GT
Iprodione
2
G, N, L
Banner Maxx I
Propiconazole
3
N, L
FS
PDR
Powdery mildew
1+14
Pythium root rot
Thiophanate methyl
+ Etridiazole
Phytophthora root rot
Banrot
Passalora needle blight
GDR, DI
Fungal leaf spots
G, N, L
Fungal cankers
1
Cleary 3336 /
OHP 6672
/Allban
Fire blight
Thiophanate methyl
Active
ingredient(s)
Downy mildew
Sites2
Trade name
Cedar rusts
FRAC1
Black root rot
Table 10-14. Relative Effectiveness of Various Chemicals for Disease Control in Woody Ornamentals
Notes
FS
Do not mix with copper-containing materials or
with highly alkaline pesticides such as lime
sulfur.
GS
Do not apply more than once to green or
varigated pittosporium or schefflera.
GDR
GS
Do not apply as a soil drench on Impatiens and
Pathos. Do not apply on Spathiphllum.
FS
GS
S
S
GS
Eagle / Hoist /
Systhane
Myclobutanil
3
G, N, L
Fungaflor I
Imazalil
3
G
GS
Rubigan
Fenarimol
3
N, L
GS
Strike
Triadimefon
3
G, N, L
Terraguard I
Triflumizole
3
G, N, L
Torque
Tebuconazole
3
N, L
Tourney
Metconazole
3
N, L
3
not on
market
yet
3+M3
G, N, L
Trinity
Triticonazole
Clevis
Myclobutanil +
Mancozeb
Concert I
Propoconazole +
Chlorothalonil
3+M5
Mefenoxam
4
G, N, L
Pipron
Piperalin
5
G
Pageant
Boscalid +
Pyraclostrobin
7+11
G, N, L
Compass O
Trifloxystrobin
11
G, N, L
Cygnus
Kresoxim methyl
11
G, N, L
Disarm
Fluoxastrobin
11
G, N, L
11+M5
not on
market
yet
FenStop
Heritage
Fluoxastrobin +
Chlorothalonil
Fenamidone
Azoxystrobin
11
11
F
FS
G
S
Special use instructions for chrysanthemums.
May prevent rooting on some Prunus spp. (e.g.
sand cherry).
May cause leaf puckering and growth effects on
some rose cultivars during cool, overcast
conditions.
GS
GS
Do not apply on Impatiens plugs; phytotoxic to
some cultivars of Impatiens.
GS
GS
Not for homeowner use. Do not apply to bearing
fruit trees or vegetables.
GS
GS
May cause growth regulation on some
ornamentals.
FS
FS
GS
FS
GS
GS
G DR
FS
GS
G
F
GS
DR, R
G
FS
DR, R
G
G
S
GS
For use only in greenhouses and similar
enclosed structures. May be phytotoxic on
flower buds of some plants, check label.
GS
Do not mix with organosilicone adjuvants.
Impatiens and petunia flowers may become
discolored after application. Do not apply on
Nine bark or wintercreeper.
G
GS
Do not apply on African violet, begonia, Boston
fern, geranium, varigated and green
pittosporium, and schefflera; may cause injury
to buds, blooms, tender new growth.
Some species of Pythium are insensitive to this
product. A granular formulation of Subdue can
also be mixed into the substrate.
P-
DR, R
GS
S
S
GS
Do not mix with organosilicone adjuvants. May
cause phytotoxicity on pansy.
Do not mix with organosilicone adjuvants; may
be phytotoxic to some Prunus spp.
FS
FS
G
G, N, L
F
FS
N, LA
Subdue Maxx
Disarm C
F
S
F
S
GS
F
S
F
S
G
S
G
S
continued
492
GS
GS
F
DR
DR
P
F
DR
GS
Do not apply to Oxalis.
DR
GS
Do not mix with organosilicone adjuvants.
P
Insignia
Pyraclostrobin
Palladium
Cyprodinil +
Fludioxonil
9+12
G, N, L
Medallion
Fludioxonil
12
G, N, L
Terraclor
PCNB
14
G, N, L
Terrazole /
Truban
Etridiazole
14
G, N, LB
Decree
Fenhexamid
FS
G, N, L
GS
F
FDR
PDR
Pythium root rot
Fungal leaf spots
Fungal cankers
FS
PDR
S
Powdery mildew
11
Sites2
Fire blight
FRAC1
Downy mildew
Active
ingredient(s)
Cedar rusts
Trade name
Black root rot
Notes
GS
Do not mix with organosilicone adjuvants;
Impatiens and Petunia flowers may become
discolored after application; Do not apply on
Nine bark or Wintercreeper.
G
S
Do not apply to leather leaf fern or field-grown
fern harvested for floral arrangements; may
leave residue on poinsettia with bracts.
FS
GDR
GDR
GDR
17
G, N
Endorse/Affrim/
Veranda O
Polyoxin D
19
G, N, L
FS
Segway
Cyazofamid
21
G, N, L
GS, DR
Agri-Mycin 17
Streptomycin
25
N, L
Aliette
Fosetyl AL
33
G, N, L
GS
GS, DR, DI
PS
33
G, N, L
S
S, DR, DI
S
33
G, N, L
Alude/Fosphite/ Mono- and diK-Phite/
potassium salts of
Magellan
phosphorous acid
Only labeled for Botrytis.
GDR
Apply in foliar and bud sprays; Do not apply
after fruit is visible.
G
G
Biophos
Vital
Potassium
phosphite
33
G, N, L
G
Micora
Mandipropamid
40
G, N
GS,DR
FDR
Orvego
Dimethomorph +
Ametoctradin
40+45
not on
market
yet
GS, DR
FDR
Stature
Dimethomorph
40
G, N
GS, DR
FDR
Fluopicolide
43
S
G
GS, DR
G, N, L
M1
G, N, L
PS,R
FS
CuPRO
Copper hydroxide
M1
G, N, L
PS,R
FS
KocideC
Copper hydroxide
M1
G, N, L
Phyton 27
Copper sulphate
pentahydrate
Junction
Copper hydroxide +
Mancozeb
Protect/Fore
Mancozeb
Daconil Ultrex
Chlorothalonil
G, N, L
G, N, L
M5
GD, N,
LA
GS
F
S
S,R
P
F
FS
S,R
GS
F
S
G
S
GS
FS
GS
continued
493
GS
Aliette is not compatible with flowable
formulations of Daconil, Fore, or copper
fungicides as tank mixtures.
Do not apply to plants under severe water
stress or duing very HIGH or very LOW
temperatures.
Do not tank mix with copper or surfactants.
Do not apply to plants under severe water
stress or duing very HIGH or very LOW
temperatures.
This product can also be used on vegetables
sold to the retail market in GH with permanent
flooring.
FDR
Active ingredient may settle out of solution;
requires agitation if left to sit.
FDR
Adorn MUST be tank mixed for resistance
management with another product that is
registered for use against the target disease. Do
not make more than one application of Adorn
per crop on poinsettia- phytotoxicity has been
observed with repeat applications.
GS
Do not tank mix with Aliette. Avoid contact with
metal surfaces. Discoloration of blooms may
occur on certain plant varieties; check label. Do
not apply to hibiscus plants in flower.
GS
metal surfaces.
metal surfaces. Only labeled for Conifers.
GS
G, N, L
M3
S, DR
GDR
Copper octanoate
M1+M3
F
FS
Camelot O
M1
F-GDR
FS,R
Dipotassium salts of
phosphorous acid
Adorn
Do not apply to leather leaf fern or field-grown
fern harvested for floral arrangements; may
leave residue on poinsettia with bracts.
G
S
G
S
May damage tender open booms. Do not tank
mix with B-NINE or use within 7 days of a BNINE application.
Injury may occur from late season application;
no post-bloom applications on some plants,
check label.
PS
Not for use on marigold.
GS
Do not combine in the spray tank with other
pesticides or fertilizers unless tested first. Avoid
applications during bloom period on some
plants: check label. Do not apply on poinsettia
during or after bract formation.
Milstop
Potassium
bicarbonate
NC
G, N, L
Regalia
Extract of Giant
Knotweed
(Reynoutria
sachalinensis)
P
G, N, L
Rhapsody/
Cease
Bacillus subtilis
44
G, N, L
Powdery mildew
Pythium root rot
Fungal leaf spots
Fungal cankers
Sites2
Fire blight
FRAC1
Downy mildew
Active
ingredient(s)
Cedar rusts
Trade name
Black root rot
F-GS
Notes
Do not mix with other pesticides or fertilizers not
compatible with mild alkaline solutions. Does
not require the addition of a surfactant. Do not
use on young pansies.
Concentrations at 1% or higher applied on
young tissue may cause phytotoxicity.
FtoPS
PS
FS
1
Key to Fungicide Groups: 1: methyl benzimidazole carbamates; 2: dicarboxamides; 3: demethylation inhibitors; 4: phenylamides; 5: amines; 7:
carboxamides, 9: anilino-pyrimidines; 11: quinone outside inhibitors; 12: phenylpyrroles; 14: aromatic hydrocarbons and heteroaromatics; 17:
hydroxyanilides; 19: polyoxins; 21: quinone inside inhibitors; 33: phosphonates; 40: carboxylic acid amines; 43: benzimindes; 44: microbial; 45: quinone xinhibitors.
M: multi-site activity; NA: not classified; P: plant extract.
2
Product labeled for use in G = greenhouse; N = nursery; L = landscape.
DR
= Product should be applied as a drench
DI
= Product can be applied as a plant- or cutting- dip
S
= Product should be applied as a foliar spray
R
= Resistance to this pesticide has been detected in the pathogen population
I
= Incompatible with Rootshield
A
= Do not apply to landscapes associated with apartment buildings, daycare centers, playgrounds, schools, athletic fields, etc.
B=
Terrazole is for commercial use ONLY; label restricts the use of Terrazole in residential greenhouses or indoor plant sites.
C
= Kocide is only labeled for use on conifers in Christmas tree plantings and silviculture nurseries.
D
= Do NOT apply with mist blowers or high pressure spray equipment in greenhouses.
Note: Recommendations for the use of agricultural chemicals are included here as a convenience to the reader. The use of brand names and mention or
listing of commercial products does not imply endorsement nor discrimination against similar products or services not mentioned. Individuals who use
agricultural chemicals are responsible for ensuring that the intended use complies with current state regulations and conforms to the product label. Examine
a current product label before applying any chemical. For assistance, contact your county Cooperative Extension agent.
494
Treatments for Sanitizing Tools, Equipment, Cultivation Surfaces, Pots and Flats
Note: It was not possible to update the information in this table for the 2016 North Carolina Agricultural Chemicals Manual. The information in this table is
current as of Jan. 1, 2015. Anyone using any agricultural chemical should refer to the current chemical label, which contains information about the safe and
effective use of the chemical, before using the chemical.
All items should be free of organic debris before exposure to the treatments listed below. Sanitizing an entire greenhouse involves physically
removing leftover debris and soil as a first step prior to disinfection, as soil and organic residues reduce the effectiveness of disinfectants. There are some
commercial cleaners specifically designed for greenhouse use, e.g., Strip-It (best applied by spray, brush, or foam), which is a combination of cleaning and
wetting agents formulated to remove algae, dirt, and hard water deposits. High pressure power washing with soap and water is also an option prior to
disinfection as listed below.
Table 10-15. Treatments for Sanitizing Tools, Equipment, Cultivation Surfaces, and other Related Items
Material or Treatment
Trade name
alcohol, ethyl and isopropyl
(grain, rubbing, wood)
(70-100%)
Various commercial brands;
Lysol Spray (also includes
quaternary ammonium)
hydrogen peroxide
(hydrogen dioxide) and
peroxyacetic acid mixture
quaternary ammonium
sodium hypochlorite
(8.25%)
steam
solarization
Remarks
Contact time
Depends on formulation. Read label.
Typically full strength for RTU (Ready
To Use) formulations.
Evaporates quickly so that adequate contact
time may not be achieved; high
concentrations of organic matter diminish
effectiveness; flammable.
10 min for equipment, pots,
flats and surfaces. Tools can
be dipped for 10 seconds and
allowed to dry. Do not rinse.
ZeroTol 2.0;
SaniDate 5.0;
Oxidate 2.0
2.5 fl oz per gallon of water
0.5 fl oz per gallon of water
0.5 to 1.25 fl oz per gallon of water
Very corrosive; eye/skin irritant. Low odor.
Use according to label. Must be stored in
cool location.
1-10 min
Physan 20;
Depends on formulation. Typically 1
tablespoon per gallon of water
Effective for non-porous surface sanitation,
e.g. floors, walls, benches, pots. Low odor,
irritation.
10-15 min
Must remain wet for 10 min.
Wipe dry with a clean cloth or
sponge or allow to air dry.
KleenGrow
For general disinfection use
0.5 to 1.0 fl oz per gallon of water
Hard, NON-POROUS surfaces use 1.0 fl oz
per gal water; Tools, cutters & equipment
use 0.5 fl oz per gal water. Apply solution
with a cloth, mop, sponge, coarse spray
device or by immersion until surfaces are
wet. Prepare a fresh solution daily.
Must remain wet for 10 min.
Wipe dry with a clean cloth or
sponge or allow to air dry.
10%; or a 1:14 ratio of bleach : water
Inactivated by organic matter; fresh solutions
should be prepared every 8 hr or more
frequently if exposed to sunlight; corrosive to
metal; irritating to eyes and skin; Exposure to
sunlight reduces efficacy. Keep solution in
opaque container.
10-15 min. for equipment,
pots, flats and surfaces. Tools
can be dipped for 10 seconds
and allowed to dry. Do not
rinse.
Cover or otherwise seal
For plastic pots and trays, heat center of
steamer between 150 degrees F to 160
degrees F;
60 min.
For less heat-sensitive objects, heat to 180
degrees F.
15 min.
Clear plastic works much better.
140 degrees F, 4 to 8 hr/day
for 7 days
Clorox;
Commercial bleach;
NA
NA
Formulation
Place clean items on solid surface,
cover tightly with CLEAR plastic
495
Disease Control for Commercial Vegetables
L. M. Quesada-Ocampo, Inga Meadows, and Frank Louws, Plant Pathology
This section was prepared as a collaborative effort of vegetable pathology experts in the southeastern United States who yearly update
the Southeastern U.S. Vegetable Crop Handbook. Contributors this year included: L. M. Quesada-Ocampo (North Carolina State
University), M. Lewis Ivey (Louisiana State University), R. Melanson (Mississippi State University), F. Louws (North Carolina State
University), E. Pfeufer (University of Kentucky), I. Meadows (North Carolina State University), and E. Eure (North Carolina State
University).
Caution: At the time these tables were prepared, the entries were believed to be useful and accurate. However, labels change rapidly,
and errors are possible, so the user must follow all directions on the product label. Federal tolerances for fungicides may be canceled or
changed at any time.
Information in the following tables must be used in the context of a comprehensive disease control program. Many diseases are
controlled by combined strategies—using resistant varieties, crop rotation, deep-turn plowing, sanitation, seed treatments, cultural
practices, and fungicides. Always use top-quality seed and plants obtained from reliable sources. Seed are ordinarily treated by
commercial producers for control of decay and damping off.
Nematode control chemicals and greenhouse diseases are provided in separate tables following the crop tables. Efficacy tables will help
in selecting appropriate disease control materials for some vegetable crops. These tables are located at the end of each crop table.
Rates: Some foliar rates given in the tables are based on mixing a specified amount of product in 100 gallons of water and applying the
finished spray for complete coverage of foliage just to the point of runoff with high pressure (over 250 psi) drop nozzle sprayers. Actual
amount of product and water applied per acre will vary depending on plant size and row spacing. Typically, 25 to 75 gallons per acre of
finished spray are used. Concentrate spray (air blast, aircraft, etc.) rates are based on amount of product per acre. Caution: With
concentrate sprays, it is easy to apply too much product. Some fungicides are adversely affected by pH of water; adjust pH of water if
specified on label.
Do not feed treated foliage to livestock unless allowed by the label. Do not reenter fields until sprays have dried; some fungicides may
have a reentry requirement of one to several days. Read the label. Do not exceed maximum number of applications on the label. Do not
exceed maximum limit of fungicide per acre per application or per year as stated on the label. See label for rotational crops. In all cases,
follow directions on the label.
Disease Control by Crop
Asparagus
Table 10-16. Disease Control Products for Asparagus
Rate of Material to Use
Disease
Material
Gray mold
fenhexamid (Elevate)
(Botrytis cinerea)
Minimum Days
Formulation
Active Ingredient
Harvest
1.5 lb/A
0.75 lb/A
180
Crown rot
mancozeb (various)
See label
See label
See label
Phytophthora
crown rot,
spear rot
mefenoxam (Ridomil Gold SL)
1 pt/acre
0.5 lb/A
1
fosetyl-AL (Alliette)
5 lb/A
4 lb a.i.
110
Rust
myclobutanil (Rally 40W)
5 oz/A
2.0 oz a.i.
180
sulfur (various)
tebuconazole (Folicur )3.6F
(Orius) 3.6F
(Toledo) 3.6F
See label
See label
See label
4 to 6 fl oz/A
0.11 to 0.17 lb
180
Reentry Method, Schedule, and Remarks
0.5
Apply at fern stage only.
See label See label. Rates vary depending on the formulation. Soak
crowns 5 minutes in burlap bag with gentle agitation, drain, and
plant.
2
Apply over beds after seeding or covering crowns, 30 to 60
days before first cutting, and just before harvest.
0.5
1
Begin applications to developing ferns after harvest has taken
place. Repeat on a schedule not to exceed 14 days. Do not
supply to harvestable spears.
See label See label. Rates vary depending on the formulation.
0.5
Apply to developing ferns at first sign of rust and repeat on a
14-day interval; no more than 3 applications per season.
Rust,
Cercospora
leaf spot
chlorothalonil (various)
See label
See label
See label
mancozeb (various)
See label
See label
See label
See label Apply to ferns after harvest; spray first appearance, 7 to 10 day
intervals. Do not exceed 8 pounds product per acre per crop.
Purple spot
6 to 15.5 fl oz
0.10 to 0.25 lb a.i.
100
See label
See label
See label
3 to 4 oz/A
1.5 to 2 oz/A
180
trifloxystrobin (Flint 50 WDG)
496
4 hr
Do not apply more than 1 foliar application of Quadris (or other
group 11 fungicide) before alternating with a fungicide that has
a different mode of action.
12 hr
Make no more than one application before alternating with
fungicides that have a different mode of action. Begin
applications preventively when conditions are favorable for
disease and continue as needed on a 7 to 14 day interval.
Table 10-17. Relative Importance of Alternative Management Practices for Disease Control in Asparagus
Scale E, excellent; G, good; F, fair; P, poor; NC, no control; ND, no data.
Disease
Rust
Cercospora blight
Stemphylium blight
Fusarium root rot
Phytophthora crown/
spear rot
F
F
F
NC
NC
NC
NC
NC
F
P
Clip and bury infected ferns
G
G
G
NC
NC
Destroy infected ferns
E
E
E
NC
NC
Encourage air movement/wider row
spacing
Plant in well-drained soil
P
P
G
NC
NC
NC
NC
NC
F
F
F
NC
NC
NC
NC
NC
NC
NC
E
E
G
G
NC
G
NC
Management tactic
Avoid overhead irrigation
Crop rotation (5 years or more)
Destroy volunteer asparagus
Pathogen-free planting material
Resistant/tolerant cultivars
Basil
Table 10-18. Disease Control Products for Basil
Minimum Days
Disease
Material
Formulation
Active Ingredient
Leaf spots, fungal
(Botrytis, Alternaria,
Fusarium)
cyprodinil + fludioxonil
(Switch) 62.5WG
11 to 14 oz/acre
6.87 to 8.75 oz/acre
7
0.5
Limit of 56 fluid ounces per acre per season. Make no
more than two consecutive applications before rotating
to another effective fungicide with a different mode of
action.
Downy mildew
(Peronospora belbahrii)
cyazofamid
(Ranman)
2.75 to 3 fl oz/acre
0.071 to 0.078 lb/acre
0
0.5
Limit of 27 fluid ounces per acre per season. Alternate
with a fungicide with a different mode of action. May be
applied through sprinkler irrigation system.
8 fl oz/acre
0.13 lb/acre
1
4 hr
action. NOTE: This is a supplemental label (EPA
Reg. No. 100-1254) that expires on 12/19/2016.
phosphorous acid
(Confine Extra, K-Phite)
1 to 3 qt/20 to 100 gal
water/acre
0.53 to 1.59 qt/20 to
100 gal water/acre
0
4 hr
Do not apply at less than 3 day intervals.
potassium phosphite
(Fosphite, Fungi-phite,
Helena Prophyt)
1 to 3 qt/100 gal
water/acre
0.53 to 1.59 qt/100
gal water/acre
0
4 hr
Fusarium wilt and
Pythium and Rhizoctonia
root rots
phosphorous acid
(Confine Extra, K-Phite)
1 to 3 qt/20 to 100 gal
water/acre
0.53 to 1.59 qt/20 to
100 gal water/acre
0
4 hr
potassium phosphite
(Fosphite, Fungi-phite,
Helena Prophyt)
1 to 3 qt/100 gal
water/acre
0.53 to 1.59 qt/100
gal water/acre
0
4 hr
Pythium Damping off
Metalaxyl (Ridomil Gold)
1 to 2 pt/acre
0.5 to 1 pt/acre
21
2
manipropamid
(Revus)
Harvest Reentry Method, Schedule, and Remarks
Apply as a basally directed spray 28 days after planting.
Bean
Table 10-19. Disease Control Products for Bean
Disease
Material
Formulation
Active Ingredients
Minimum Days
Harvest
Reentry
Method, Schedule, and Remarks
Bean, Dry (Catjang, Chickpea, Fava, Garbanzo, Lentil, Lima, Lupine, Mung, May pea, Southernpea, Soybean)
Anthracnose, Alternaria
leaf spot and blight,
Ascochyta leaf and pod
spot, rust (Phakopsora)
6.2 to 15.4 fl oz
0.10 to 0.25 lb
0
4 hr
Do not apply more than three sequential
applications.
(Priaxor)
4.0 to 8.0 fl oz
0.13 to 0.25 lb
21
12 hr
Begin prior to disease development and continue
on a 7 to 14 day spray schedule.
6 to 12 fl oz
14
0.5
Do not apply more than three sequential applications.
4.3 to 5.7 fl oz/acre
7
0.5
See label for specific crop restrictions.
picoxystrobin (Approach)
Aschochita blight, Rust,
white mold
prothioconazole
(Proline 480 SC)
497
Disease
Material
Formulation
Active Ingredients
Minimum Days
Harvest
Reentry
Bean, Dry (Catjang, Chickpea, Fava, Garbanzo, Lentil, Lima, Lupine, Mung, May pea, Southernpea, Soybean) (continued)
Alternaria leaf spot and
blight, powdery mildew,
gray mold, white mold
fluopyram (Luna Privilege)
4.11 fl oz/acre
Anthracnose, Botrytis
(Sclerotinia)
boscalid (Endura 70 WG)
8 to 11 oz
picoxystrobin (Approach)
thiophanate-methyl
(Topsin M) 70 WP
fluazinam (Omega 500)
Botrytis gray mold, white
mold (Sclerotinia)
fludioxonil (Cannonball WG)
iprodione (Rovral) 50 WP 4 F
Pythium damping off
mefenoxam (Ridomil Gold) 4 SL
Begin fungicide applications preventively.
Continue as needed on a 7- to 10-day interval
depending on disease pressure.
21
0.5
Use 6-ounce rate for chickpeas and lentils. Many
other dried and succulent beans on label.
8 to 12 fl oz
14
0.5
Do not apply more than three sequential applications. For white mold, make preventive
applications beginning at bloom (see label).
30-40 fl oz
28
3
For multiple applications: Make first application
when 10-30% of plants have at least one open
bloom and continue on 7 day intervals. Do not
apply more than 80 fluid ounces per season.
14
3
Apply at 10 to 30% bloom.
7
0.5
0.75 to 1 lb/acre
0
1
Do not use on cowpea. Two applications
maximum per saosn with last application no late
than peak bloom. Do not feed dry bean hay to
livestock until 45 days after last application.
2
Preplant incorporate. See label for row rates.
0.5 to 0.85 pts
5.6 to 7.7 oz
0.26 to 0.44
7 oz
1.5 to 2 lb/acre
Begin before disease develops and continue on 7
day intervals until conditions no longer favor
disease development. Do not apply more than 28
ounces per acre. Do not use on cowpeas.
0.5 to 1 pt/trt acre
0.25 to 0.5 lb/trt acre
—
0.0071 + 0.0028 lb/
acre
—
0.4 to 0.8 fl oz/ 1,000
row feet
0.006 to 0.013 lb
—
azoxystrobin + mefenoxam
(Uniform)
0.34 fl oz/1,000 row ft
0.0071 + 0.0028 lb/
acre
—
2.3 to 3.3 fl oz/1000
row ft
1.0 to 1.5 lb/acre
—
6.2 fl oz
0.10 lb
0
4 hr
Do not apply more than three sequential
applications.
8 to 11 oz
5.6 to 7.7 oz
21
0.5
Use 6 ounce rate for chickpeas and lentils. Many
other dried and succulent beans on label.
5.5 to 8 fl oz
1.5 to 2.4 lb
30
0.5
All dry beans except soybeans. Make no more
than 2 applications per season
tebuconazole (Folicur) 3.6F
4 to 6 fl oz/acre
1.5 to 2 lb/acre
14
0.5
Apply before disease appears when conditions
favor rust development and repeat at 14 day
intervals; maximum 12 fluid ounces per season.
6.2 to 15.4 fl oz
0.10 to 0.25 lb
0
4 hr
For anthracnose only. Do not apply more than
three sequential applications.
See label
See label
dicloran (Botran) 75 W
2.25 to 4 lb/acre
1.7 to 3 lb/acre
2
0.5
thiophanate-methyl
(Topsin M) 70 WP
1 to 2 lb/acre
0.7 to 1.4 lb/acre
14
1
Spray at 25% bloom, repeat at full bloom. Do not
exceed 4 pounds product per season.
0.5 to 0.85 pts
0.26 to 0.44
14
3
(Priaxor)
4.0 to 8.0 fl oz
0.13 to 0.25 lb
7
12 hr
8 to 11 oz
5.6 to 7.7 oz
7
0.5
14 to 30 fl oz/acre
0.18 to 0.4 oz/acre
0
12 hr
7
0.5
PCNB (Blocker)
Rust (Uromyces)
0.5
0.34 fl oz/1,000 row
ft
(Uniform)
Rhizoctonia root rot
14
boscalid (Endura) 70 WG
pyraclostrobin (Headline) 2.09F
In-furrow spray. See label directions.
4 hr
Make in-furrow or banded applications shortly
after plant emergence.
Bean, Snap
Anthracnose, Botrytis,
Sclerotinia
Ascochyta blight, Botrytis boscalid (Endura) 70 WG
penthiopyrad (Fontelis)
7 oz
See label See label See label. Rates vary depending on the
formulation.
mold (Sclerotinia)
Fludioxonil (Cannonball WG)
Bacterial blights
fixed copper (various)
Downy mildew
(Phytophthora
nicotianae)
mandipropamid (Revus)
8 fl oz/acre
0.13 fl oz/acre
1
4 hr
Pythium damping off
—
2
Powdery mildew
sulfur (various)
See label
See label
See label
See label
498
For Sclerotinia only. Use low rate for bush
varieties and high rate for pole varieties.
Many other dried and succulent beans on label.
Begin sprays prior to disease development.
formulation. Spray first appearance, 10 day
intervals.
Begin applications prior to disease development
and continue throughout the season on a 7-10
day interval.
Preplant incorporate. See label for row rates.
formulation. Spray at first appearance, 10 to 14
day intervals. Avoid days over 90 degrees F.
Disease
Material
Minimum Days
Formulation
Active Ingredients
Harvest
Reentry
0.4 to 0.8 fl oz/ 1,000
row feet
0.006 to 0.013lb/
1,000 row feet
—
4 hr
4 to 5 oz/acre
1.6 to 2 oz/acre
0
1
For Rhizoctonia only.
dichoropropene
(Telone) C-17 C-35
10.8 to 17.1 gal/acre
13 to 20.5 gal/acre
107 to 169 lb/acre
139 to 220 lb/acre
—
5
Rate is based on soil type; see label for in-row
rates.
metam-sodium (Vapam) 42 HL
37.5 to 75 gal/trt acre 160 to 320 lb/trt acre
—
—
Rate is based on soil properties and depth of soil
to be treated; apply 14 to 21 days before planting.
0
Bean, Snap (continued)
myclobutanil Rally 40 WSP
Rust (Uromyces)
0.10 to 0.25 lb/acre
6.0 to 9.0 fl oz
8 to 11 oz/acre
5.6 to 7.7 oz/acre
See label
See label
4 to 5 oz/acre
1.6 to 2 oz/acre
See label
See label
4 to 6 fl oz/acre
1.5 to 2 lb/acre
7
0.5
Apply before disease appears when conditions
favor rust development and repeat at 14 day
intervals; maximum 24 fluid ounces per season.
botran 75 W
2.5 to 4 lb/acre
1.9 to 3 lb/acre
2
0.5
Use low rate for bush varieties and high rate for
pole varieties.
0
thiophanate-methyl
(Topsin M) 70 WP
1.5 to 2 lb/acre
1.05 to 1.4 lb/acre
14
1
iprodione (Rovral) 50 WP 4 F
1.5 to 2 lb/acre
1.5 to 2 pt/acre
0.75 to 1 lb/acre
0
1
0.5 to 0.85 pts
0.26 to 0.44
30
3
14 to 30 fl oz/acre
0.18 to 0.4
0
12 hr
Begin sprays prior to disease development.
6.0 to 9.0 fl oz
12 hr
Make no more than two sequential applications.
(Priaxor)
4.0 to 8.0 fl oz
0.13 to 0.25 lb
21
12 hr
fludioxonil (Cannonball WG)
7 oz
3.5 oz
7
0.5
1 to 4 lb/acre
0.05 to 0.2 lb/acre
0
4 hr
OMRI listed product. Apply to soil surface and
incorporate no deeper than 2 inches. Works best
when applied prior to planting or transplanting. Do
not apply other fungicides for 3 weeks after
applying Contans.
0.4 to 0.8 fl oz/ 1,000
row feet
0.006 to 0.013 lb/
1,000 row feet
—
4 hr
Rhizoctonia only. Make in-furrow or banded
applications shortly after plant emergence.
—
2
0.34 fl oz/1,000 row
ft
0.0071 + 0.0028 lb/
acre
—
myclobutanil Rally 40 WSP
sulfur (various)
White mold (Sclerotinia)
Apply in-furrow or banded applications shortly
after plant emergence.
7
4 hr
Make no more than three sequential applications.
12 hr
Make no more than two sequential applications.
0.5
Many other dried and succulent beans on label.
formulation.
0
1
Spray at first appearance.
formulation. Spray at 7 to 10 day intervals.
Bean, Lima
Botrytis, Sclerotinia, leaf
spots
mold (Sclerotinia)
Coniothyrium minitans
(Contans WG)
Damping off, Pythium,
Rhizoctonia
(Uniform)
499
4 hr
Leaf spots only; do not make more than three
sequential applications.
4 pounds limit per acre per crop.
For Pythium only. Soil incorporate. See label for
row rates. Use proportionally less for band rates.
Table 10-20. Efficacy of Products for Foliar Disease Control in Beans
azoxystrobin + mefenoxam (Uniform)
Common Bacterial Blight
Common Rust
Downy Mildew
Gray Mold (Botrytis)
Halo Blight
Powdery Mildew
Pythium Cottony Leak
G
NC
ND
NC
E
ND
P
NC
ND
F
Southern Blight (S. rolfsii)
Cercospora
E
Sclerotinia Blight
Brown Spot (Pseudomonas)
14
Rhizoctonia Sore Shin
Anthracnose
11
Pythium Damping off
Aerial Rhizoctonia
Preharvest interval (Days)
Product1
Fungicide groupF
Scale: E, excellent; G, good; F, fair; P, poor; NC, no control; ND, no data.
ND
G
NC
E
11 + 4
—
ND
ND
NC
ND
NC
ND
ND
NC
NC
NC
P
G
G
NC
NC
boscalid (Endura)
7
7 to 21
ND
ND
NC
ND
NC
ND
NC
G
NC
ND
NC
NC
ND
E
P
7
0
ND
ND
NC
ND
NC
ND
NC
G
NC
ND
NC
NC
ND
E
F
dicloran (Botran)
14
—
NC
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
F
NC
29
30
ND
ND
NC
NC
NC
NC
ND
G
NC
NC
NC
NC
ND
G
F
M
7
P
F
NC
G
NC
G
F
NC
NC
ND
NC
NC
NC
NC
NC
9 + 12
7
ND
ND
NC
ND
NC
ND
NC
G
NC
ND
NC
NC
ND
E
P
cyprodonil + fludioxonil (Switch)
M
0
NC
P
F
P
F
P
F
P
F
P
NC
NC
NC
NC
NC
iprodione (Rovral)
2
—
P
NC
NC
NC
NC
NC
NC
G
NC
NC
NC
NC
F
G
NC
mefenoxam (Ridomil)
4
—
NC
NC
NC
NC
NC
NC
G
NC
NC
NC
FR
GR
NC
NC
NC
F
11
7 to 21
G
G
NC
G
NC
E
ND
P
NC
ND
F
ND
F
NC
7 + 11
7 to 21
G
G
NC
G
NC
E
ND
G
NC
ND
F
ND
F
E
F
sulfur (various)
M
0
NC
F
NC
F
NC
F
P
P
NC
F
NC
NC
NC
NC
NC
tebuconazole (Folicur)
3
7
NC
NC
NC
F
NC
G
NC
F
NC
NC
NC
NC
P
NC
G
thiophanate-methyl (Topsin M)
1
14 to 28
P
F
NC
G
NC
ND
NC
NC
NC
ND
NC
NC
P
F
NC
fluxapyroxad + pyraclostrobin (Priaxor)
1
Efficacy ratings do not necessarily indicate a labeled use for every disease.
F
R
Resistance reported in the pathogen.
500
Table 10-21. Importance of Alternative Management Practices for Disease Control in Beans
Anthracnose
Ashy stem blight
Botrytis gray mold
Cercospora
Common bacterial blight
and halo blight
Fusarium root rot
Mosaic viruses
Powdery mildew
Pythium damping off
Root knot
Rust
(more on pole beans)
Southern blight
White mold (Sclerotini)
Scale: E, excellent; G, good; F, fair; P, poor; NC, no control; ND, no data
Avoid field operations when leaves are wet
E
NC
E
F
E
NC
NC
NC
NC
NC
NC
E
NC
NC
E
NC
E
E
E
NC
NC
NC
P
NC
NC
E
NC
G
Change planting date
F
F
NC
P
F
G
F
P
E
E
P
G (early)
NC
NC
NC
ND
NC
NC
NC
NC
NC
NC
NC
NC
G
NC
NC
NC
Crop rotation
G
P
F
F
G
F
P
P
F
F
G
NC
F
E
Deep plowing
E
F
E
P
E
F
NC
NC
F
F
E
NC
E
E
Destroy crop residue
E
F
E
F
E
NC
NC
NC
P
P
F
F
G
E
Encourage air movement
E
NC
E
F
E
NC
NC
E
P
NC
NC
F
NC
G
Increase between-plant spacing
P
NC
P
F
P
P
P
P
F
F
NC
P
F
G
Increase soil organic matter
NC
F
NC
NC
NC
F
NC
NC
NC
NC
F
NC
NC
NC
Insecticidal oils
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
NC
pH management
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
NC
NC
F
F
F
NC
F
E
NC
NC
E
E
NC
NC
P
F
Plant on raised beds
F
P
F
NC
F
E
NC
NC
E
E
NC
NC
P
F
Plastic mulch bed covers
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
F
Postharvest temperature control
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
E
Reflective mulch
NC
NC
NC
NC
NC
NC
G
NC
NC
NC
NC
NC
NC
P
Reduce mechanical injury
NC
NC
NC
NC
NC
F
P
NC
NC
NC
NC
NC
P
NC
Rogue diseased plants
NC
NC
P
NC
NC
NC
F
NC
NC
NC
NC
NC
P
F
Row covers
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
NC
Soil solarization
NC
NC
P
NC
NC
F
NC
NC
F
G
F
NC
F
G
E
G
NC
F
E
NC
G
NC
NC
NC
NC
NC
NC
NC
Resistant cultivars
E
G
NC
E
E
G
E
E
NC
NC
NC
E
NC
F
Weed control
F
NC
F
NC
F
F
E
F
NC
NC
F
F
P
F
Strategy
Cover cropping with antagonist
Brassicas (Broccoli, Brussel Sprout, Cabbage, Cauliflower)
Table 10-22. Disease Control Products for Broccoli, Brussel Sprout, Cabbage, and Cauliflower
Minimum Days
Disease
Material
Formulation
Active Ingredient
Harvest
Reentry
Alternaria
leaf spot
azoxystrobin + difenoconazole
(Quadris Top 2.72 SC)
14 fl oz/acre
0.3 lb/acre
1
0.5
Apply prior to disease, but when conditions are favorable,
on 7 to 14 day schedule. Alternate to a non-QoI fungicide
after 1 application. No more than 4 applications per
season.
6 to 9 oz/acre
4.2 to 6.3 oz/acre
0
0.5
Begin applications prior to disease development, and
continue on a 7 to 14 day interval. Make no more than 2
16 to 20 fl oz/acre
5.6 to 7.1 oz/acre
7
0.5
sequential applications before rotating to another effective
fungicide with a different mode of action. Do not exceed
80 fluid ounces per season.
11 to 14 oz/acre
6.9 to 8.7 oz/acre
7
0.5
Apply when disease first appears, and continue on 7 to 10
day interval. Do not exceed 56 ounces of product per acre
per year.
boscalid (Endura 70 EG)
cyprodinil + difenoconazole
(Inspire Super 2.82 SC)
(Switch 62.5WG)
501
Disease
Material
Alternaria
leaf spot
(continued)
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
(Priaxor 500 SC)
6.0 to 8.2 fl oz/ acre
3
0.5
Make no more than two sequential applications before
alternating with fungicides that have a different mode of
action. Maximum of 3 applications. Do not apply to turnip
greens or roots.
triflumizole (Procure 480SC)
6 to 8 fl oz/acre
3 to 4 oz/acre
1
0.5
Apply when disease first appears and continue on 14 day
interval. Do not exceed 18 fluid ounces per season.
14 to 30 fl oz/acre
0
0.5
Do not exceed 72 fluid ounces of product per year. Make
no more than 2 sequential applications per season before
rotating to another effective product with a different mode
of action.
2 lb/acre
2 pt/acre
1 lb/acre
1 lb/acre
0
—
Apply to base of plant at 2- to 4-leaf stage. A second
application may be made up to the harvest date. Do not
use as a soil drench. For broccoli only.
3
0.5
greens or roots.
0.5
Begin applications 7 to 10 days after thinning, not to
exceed 4 applications per a season.
Alternaria
and gray
mold
penthiopyrad
(Fontelis 1.67 SC)
Black leg
iprodione (Rovral 4F)
(Priaxor 500 SC)
Black rot,
downy
mildew
acibenzolar-S-methyl
(Actigard 50WG)
0.5 to 1 oz/acre
0.25 to 0.5 oz/acre
7
See label
See label
See
label
Clubroot
Cyazofamid
(Ranman) 34.5 SC
Transplant:
12.9 to 25.75 fl oz/100
gal water
0.333 to 0.665 lb/100
gal water
Banded:
20 fl oz/acre
0.52 lb/acre
Transplant:
6.45 fl oz/100 gal water
0.002 lb/gal water
fluazinam (Omega 500F)
Banded: 2.6 pts/acre
Downy
mildew
amectoctradin +
dimethomorph (Zampro)
cyazofamid (Ranman 400 SC)
dimethomorph (Forum)
See label See label. Rates vary depending on the formulation. Apply
on 7 to 10 day intervals after transplanting or shortly after
seeds have emerged. Some reddening on older broccoli
leaves and flecking of cabbage wrapper leaves may occur.
Check label carefully for recommended rates for each
disease on each crop.
0.5
0
50
50
1.36 lb/acre
Either apply immediately after transplanting with 1.7 fluid
ounces of solution per transplant, or as a banded
application with soil incorporation of 6 to 8 inches prior to
transplanting. Do not apply more than 39.5 fluid ounces/
acre/season; or 6 (1 soil + 5 foliar) applications per season.
Do not make more than 3 consecutive applications without
rotating to another fungicide with a different mode of action
for 3 subsequent applications.
Either apply directly as a drench to transplants or as a
banded application with soil incorporation of 6 to 8 inches
prior to transplanting. Use of product can delay harvest
and cause some stunting without adverse effects on final
yields.
14 fl oz/acre
0.48 lb/acre
0
0.5
Do not make more than 2 sequential applications before
alternating to a fungicide with a different mode of action.
Addition of an adjuvant may improve performance (see
label for specifics).
2.75 fl oz/acre
0.072 lb/acre
0
0.5
Begin applications on a 7 to 10 day schedule when disease
first appears or weather is conducive. Do not apply more
than 39.5 fluid ounces/acre/season; or 6 (1 soil + 5 foliar)
applications per season. Do not make more than 3
consecutive applications without rotating to another
fungicide with a different mode of action for 3 subsequent
applications.
0
0.5
Use as a preventive application before infection occurs.
The minimum application interval is 7 days.
6 fl oz/acre
fluopicolide (Presidio 4 SC)
3 to 4 fl oz/acre
0.09 to 0.125 lb/acre
2
0.5
No more than 2 sequential applications before rotating to
another effective product of a different mode of action.
Limited to 4 applications, 12 fluid ounces/ acre per season.
fosetyl-AL (Aliette 80WDG)
2 to 5 lb/acre
1.6 to 4 lb/acre
3
1
Apply when disease first appears; then repeat on 7 to 21
day intervals. Do not tank mix with copper fungicides. A
maximum of 7 applications can be made per season. Also
for loose-heading Chinese cabbage, kale, kohlrabi, and
greens (collard, mustard, and rape).
8 fl oz/acre
0.13 lb/acre
1
0.5
Apply prior to disease development and continue
throughout season at 7 to 10 day intervals; maximum 32
fluid ounces per season.
2 to 4 pt/acre
2.1 lb/acre
0
4 hr
Apply when weather is foggy as a preventative. Do not
apply to plants under water or temperature stress. Spray
solution should have a pH greater than 5.5. Apply in at
least 30 gallons water per acre.
6.2 to 15.4 fl oz
0.1 to 0.25 lb
0
See label
See label
See
label
16 to 20 fl oz/acre
5.6 to 7.1 oz/acre
7
mandipropamid
(Revus 2.08 SC)
potassium phosphite
Downy
mildew,
Alternaria
leaf spot
azoxystrobin (Quadris 2.08 F)
502
4 hr
0.5
fungicide with a different mode of action. Do not exceed 80
Disease
Material
Downy
mildew,
Alternaria
leaf spot
(continued)
fenamidone (Reason 500SC)
Powdery
mildew
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
0.178 to 0.267 lb/acre
2
0.5
mancozeb (various)
See label
See label
See
label
mefenoxam + chlorothalonil
(Ridomil Gold/Bravo)
1.5 lb/acre
—
7
2
Begin applications when conditions favor disease but prior
to symptoms. Under severe disease pressure use
additional fungicides between 14 day intervals. Do not
make more than four applications per crop.
azoxystrobin + difenoconazole (Quadris Top 2.72 SC)
14 fl oz/acre
0.3 lb/acre
1
0.5
Apply prior to disease, but when conditions are favorable,
on 7 to 14 day schedule. Alternate to a non-QoI fungicide
after 1 application. No more than 4 applications per
season.
6 to 9 oz/acre
4.2 to 6.3 oz/acre
0
0.5
applications per season; disease suppression only.
16 to 20 fl oz/acre
5.6 to 7.1 oz/acre
7
0.5
fungicide with a different mode of action. Do not exceed 80
10 to 12 oz/acre
6.25 to 7.5 oz/acre
7
0.5
day intervals. Do not exceed 56 ounces of product per acre
per year.
3
0.5
alternating with fungicides that have a different mode of
greens or roots.
14 to 30 fl oz/acre
0
0.5
of action.
See label
See label
See
label
6 to 8 fl oz/acre
3 to 4 oz/acre
1
0.5
Apply when disease first appears and continue on 14 day
3 to 4 fl oz/acre
0.09 to 0.125 lb/acre
2
0.5
Apply as a soil drench at transplant. As plants enlarge, use
apply directly to soil by chemigation on a 7 to 10 day
schedule as conditions favor disease, but prior to disease
development. No more than 2 sequential applications
before rotating to another ef fective product of a different
mode of action. Limited to 4 applications, 12 fluid ounces/
acre per season,
mefenoxam
(Ridomil Gold 4 SL)
0.25 to 2 pt/acre
0.12 to 1.0 lb/acre
—
2
Apply 1 to 2 pt per acre as a broadcast, preplant application to soil and incorporate in top 2 in. of soil. For
Pythium control, use only 0.25 to 0.5 pt per acre.
metalaxyl (MetaStar 2 E AG)
4 to 8 pt/ trt acre
0.5 to 1 lb/acre
—
2
Preplant incorporated or surface application.
6 to 9 oz/acre
4.2 to 6.3 oz/acre
0
0.5
0.1 to 0.25 lb/acre
0
4 hr
Rate is equivalent to 0.4 to 0.6 fluid ounce per 1000 row
feet. Apply at planting as a directed spray to the furrow in a
band 7 inches wide. See label for other row spacings.
45
0.5
Apply fungicide to the row at planting as an in-furrow or directed spray at the base of transplants. If applied as soil
drench at planting, observe 45 day PHI.
(Switch 62.5WG)
(Priaxor 500 SC)
penthiopyrad (Fontelis 1.67
SC)
sulfur (various)
triflumizole (Procure 480 SC)
Pythium
fluopicolide (Presidio 4 F)
damping off,
Phytophthora
basal stem
rot
Rhizoctonia
bottom rot
boscalid (Endura 70 WP)
Rhizoctonia
stem (wirestem) and
root rot
azoxystrobin
(Quadris 2.08 SC)
5.8 to 8.7 fl oz/ acre on
36-in. rows
flutolanil (Convoy)
26 fl oz/acre
Sclerotinia
stem rot
(white mold)
penthiopyrad
(Fontelis 1.67 SC)
(Contans WG)
Begin applications on a 5 to 10 day schedule when disease
first appears or weather is conducive. Do not apply more
than 24.6 fluid ounces/acre/season. Do not make more
than 1 application without rotating to another fungicide with
a different mode of action.
See label See label. Rates vary depending on the formulation. Spray
at first appearance of disease and continue on a 7 to 10
day interval.
when disease first appears; then repeat as needed on 14
day interval. Avoid applying on days over 90 degrees F.
Also for use on greens (collard, kale, and mustard),
rutabaga, and turnip.
6 to 9 oz/acre
4.2 to 6.3 oz/acre
0
0.5
16 to 30 fl oz/acre
0
0.5
rotating to another effective product with a dif ferent mode
of action.
1 to 4 lb/acre
0.05 to 0.2 lb/acre
0
4 hr
OMRI listed product. Apply to soil surface and incorporate
no deeper than 2 inches. Works best when applied prior to
planting or transplanting. Do not apply other fungicides for
3 weeks after applying Contans.
503
Table 10-23. Efficacy of Products for Disease Control in Brassicas
Bacterial Soft Rot
Black Rot
Black Leg
Bottom Rot (Rhizoctonia)
Cercospora & Cercosporella
Clubroot
Powdery Mildew
Pythium damping-off
Sclerotinia/Raisin Head
Wirestem (Rhizoctonia)
11
—
E
NC
NC
ND
ND
F
NC
F
F
NC
NC
P
boscalid (Endura)
7
0 to 14
G
NC
NC
F
NC
NC
NC
P
P
NC
F
F
M
7
F
NC
NC
NC
P
F
NC
F
F
NC
NC
NC
cyazofamid (Ranman)
21
0
NC
NC
NC
NC
NC
NC
NC
G
NC
NC
NC
NC
tebuconazole (Folicur, Tebuzol, Tegrol)
3
7
F
NC
NC
ND
NC
F
NC
NC
ND
NC
NC
NC
9 + 12
7
F
NC
NC
NC
NC
F
NC
NC
F
NC
NC
NC
40
0
NC
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
fenamidone (Reason)
11
2
F
NC
NC
NC
NC
F
NC
E
NC
NC
NC
NC
fluopicolide (Presidio)
43
2
NC
NC
NC
NC
NC
NC
NC
E
NC
NC
NC
NC
45 + 40
0 to 7
NC
NC
NC
NC
NC
NC
NC
E
NC
NC
NC
NC
M
0
P
NC
F
NC
NC
P
NC
F
F
NC
NC
NC
fosteyl-Al4 (Aliette)
33
3
NC
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
iprodione (Rovral)5
2
—
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
P
P
3+9
7
G
NC
NC
ND
NC
G
NC
NC
F
NC
P
NC
7
0
E
NC
NC
ND
NC
ND
NC
NC
G
NC
G
NC
40
1
NC
NC
NC
NC
NC
NC
NC
E
NC
NC
NC
NC
mancozeb (various)
M
7
F
NC
P
NC
NC
F
NC
F
P
NC
NC
NC
cyprodinil + fludioxonil (Switch)
amectoctradin + dimethomorph (Zampro)
3
difenoconazole + cyprodinil (Inspire Super)
mefenoxam (Ridomil Gold EC) pre-plant
3
4
5
6
F
R
R
4
—
NC
NC
NC
NC
NC
NC
NC
F
NC
F
NC
NC
4+M
7
F
NC
NC
NC
P
F
NC
F
F
NCR
NC
NC
fluazinam (Omega 500) 6
29
20 to 50
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
pyraclostrobin (Cabrio)
11
—
E
NC
NC
ND
NC
E
NC
F
F
NC
NC
NC
sulfur (various)
M
0
P
NC
NC
NC
NC
P
NC
P
F
NC
NC
NC
mefenoxam + chlorothalonil (Ridomil Gold Bravo)
1
2
Downy Mildew
Alternaria Leaf Spot
azoxystrobin (Amistar, Quadris)
1,2
Product
Fungicide groupF
Fungicides registered specifically on Cole crops (cabbage, cauliflower, broccoli) include chlorothalonil, iprodione, maneb, and mefenoxam + chlorothalonil.
Pyraclostrobin is labeled only on turnip tops. Fosteyl-Al is not labeled on turnips. Always refer to product labels prior to use.
Phytotoxicity is seen when fosteyl-Al is tank-mixed with copper.
When used in combination with fosteyl-Al or maneb.
Applications of iprodione made for black leg may suppress Alternaria, Sclerotinia, and wirestem on broccoli.
Use a 20 day PHI for Omega 500 on leafy greens and a 50 day PHI for Cole brassicas. Use a zero day PHI for Zampro on leafy greens and a 7 day PHI
on Cole crops.
504
Table 10-24. Importance of Alternative Management Practices for Disease Conrol in Brassicas
Black rot
Black leg
Bottom rot (Rhizoctonia)
Cercospora
Clubroot
Downy mildew
Powdery mildew
Pythium
Sclerotinia head
Wirestem (Rhizoctonia)
P
F
G
F
F
P
NC
P
NC
NC
NC
NC
E
E
E
E
F
E
NC
G
P
NC
NC
NC
Alternaria leaf spot
Bacterial soft rot
Strategy
P
P
NC
NC
P
NC
NC
NC
NC
P
NC
F
NC
NC
NC
NC
NC
NC
P
NC
NC
P
NC
NC
Crop rotation
F
F
G
G
P
F
NC
F
NC
NC
P
P
Deep plowing
F
F
G
G
F
F
NC
F
NC
NC
F
F
F
F
G
G
F
F
NC
F
NC
NC
P
P
F
P
P
P
F
F
NC
F
NC
P
F
NC
Increase between-plant spacing
F
P
P
P
F
F
NC
F
NC
P
F
NC
NC
NC
NC
NC
P
NC
P
NC
NC
NC
NC
P
P
NC
E
G
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
E
NC
NC
NC
NC
NC
P
F
P
P
G
P
E
P
NC
F
F
G
Hot water seed treatment
pH management
NC
F
P
NC
G
NC
E
P
NC
F
F
G
P
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
NC
NC
E
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Reflective mulch
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
E
G
NC
NC
NC
NC
NC
NC
NC
F
P
P
NC
NC
F
P
NC
NC
NC
NC
NC
NC
NC
Row covers
NC
P
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Soil solarization
NC
NC
NC
P
F
NC
NC
NC
NC
P
P
F
F
NC
E
E
F
NC
G
NC
NC
NC
P
F
NC
NC
E
NC
NC
NC
P
F
F
NC
NC
P
F
NC
F
F
NC
F
F
F
F
NC
F
NC
Rogue diseased plants
Resistant cultivars
Weed control
Cantaloupe — See Cucurbits
Corn, Sweet
Table 10-25. Disease Control Products for Corn, Sweet
Disease
Material
Various seedling
diseases
mefenoxam + PCNB + Bacillus
subtilis GB03 (System 3)
Soilborne diseases
Formulation
pyraclostrobin (Stamina)
1.6 fl oz/100 lbs of
seed
fludioxonil (Maxim 4FS)
0.16 fl oz/100 lbs of
seed
fluoxastrobin (Aftershock)
Active Ingredient
3 oz/bu of seed
0.16 to 0.24 fl oz/ 1000
row feet
Minimum Days
Harvest
_
1
Seed treatment
Seed treatment
0.07 to 0.10 oz/
1000 row feet
505
7
0.5
Seed treatment
0.5
May be applied as a banded or in-furrow spray.
Consult label for specifics.
Table 10-25. Disease Control Products for Corn, Sweet
Minimum Days
Disease
Material
Formulation
Active Ingredient
Harvest
Rust,
Helminthosporium
Leaf blight (Northern
and Southern Blight)
See label
See label
See label
See
label
See label. Rates vary depending on the formulation.
Spray at first appearance, 4 to 14 day intervals.
mancozeb (various)
See label
See label
See label
See
label
Start applications when disease first appears and
repeat at 4 to 7 day intervals.
4 to 6 oz/acre
1.5 to 2.3 oz/acre
7
0.5
Rust, Northern and
tebuconazole (various)
Southern Blight, Gray
Leaf Spot, Northern
leaf spot
Anthracnose, Gray
propiconazole (Tilt)
leaf spot, Northern
penthiopyrad (Vertisan)
and southern corn
leaf blights and spots,
southern rust, rust
fluoxastrobin (Aftershock)
pyraclostrobin (Headline SC &
EC)
For optimum results use as a preventative
treatment. Folicur 3.6 F must have 2 to 4 hours of
drying time on foliage for the active ingredient to
move systemically into plant tissue before rain or
irrigation occurs.
2 to 4 fl oz/acre
14
1
16 fluid ounces per acre per crop maximum.
10 to 24 fl oz/acre
0
0.5
No more than 2 sequential applications of the
fungicide before switching to a fungicide with
another mode of action.
3.8 fl oz/acre
_
0.5
Soil and foliar treatments.
6 to 12 fl oz/acre
7
0.5
Do not exceed 2 sequential applications of this
fungicide or with other group 11 fungicides.
0.1 to 0.25 lb/acre
7
4 hr
Use lower rate for rust. Make no more than two
sequential applicationsbefore alternating with
fungicides that have a different mode of action.
Apply no more than 2.88 quarts per crop per acre
per season.
fluoxastrobin + tebuconazole
(Evito T)
4 to 9 fl oz/acre
0.052 to 0.163 lb/
arce
7
19
No more than 2 sequential applications before
alternating with a different mode of action.
pyraclostrobin + metconazole
(Headline AMP)
7
0.5
No more than 2 sequential applications before
alternating with a different mode of action.
azoxystrobin + propiconazole
(Quilt)
14
1
(Quilt XCEL)
14
0.5
Alternate Quilt Xcel sprays with another mode of
action than a group 11 fungicide.
(Avaris)
7 to 14 fl oz/acre
14
0.5
Alternate Avaris sprays with another mode of action
than a group 11 fungicide.
trifloxystrobin +propiconazole
(Stratego)
10 fl oz/acre
14
0.5
Apply Stratego when disease first appears and
continue on a 7 to 14 day interval. Alternate
applications of Stratego with another product with a
different mode of action than Group 11 fungicides.
trifloxystrobin +propiconazole
(Stratego YLD)
4 to 5 fl oz/acre
14
0.5
Alternate Stratego YLD sprays with another mode of
action than a group 11 fungicide.
(Priaxor)
4 to 8 fl oz/acre
7
0.5
Do not make more than two sequential applications
of Priaxor before switching to a fungicide with a
different mode of action. May be used with
adjuvants (consult label for specifics).
7
0.5
Check label for restrictions and information about
adjuvants. Effective on Eye Spot.
tebuconazole +prothioconazole
(Prosaro 421SC)
1.7 to 3.4 oz/acre
6.5 fl oz/acre
Apply when disease first appears; continue to apply
on a 14 day interval if favorable conditions persist.
Cucurbits (Cucumber, Cantaloupe, Melon, Pumpkin, Squash, Watermelon)
Table 10-26. Disease Control Products for Cucurbits
Disease
Material
Angular leaf spot,
Bacterial leaf spot
Bacterial fruit blotch
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
See label
See label
See label
Repeated use may cause leaf yellowing.
(Actigard) 50 WP
0.5 to 1 oz/acre
0.25 to 0.5 oz/acre
0
See label
See label
See label
(Actigard) 50 WP
0.5 to 1 oz/acre
0.25 to 0.5 oz/acre
0
0.5
See label
See label
1
4 hr
05
Apply to healthy, actively growing plants. Do not apply to
stressed plants. Apply no more than 8 ounces per acre per
season.
See label See label. Rates vary depending on the formulation. Start
applications at first bloom; ineffective once fruit reaches full
size. Repeated use may cause leaf yellowing.
Bacterial wilt
Belly (fruit) rot,
Rhizoctonia
season.
See Insect Control section for Cucumber Beetles.
azoxystrobin
(Quadris) 2.08 F
506
Make banded application to soil surface or in-furrow
application just before seed are covered.
Minimum Days
Disease
Material
Formulation
Active Ingredient
Harvest
Reentry
Belly (fruit) rot,
Rhizoctonia
(continued)
fluopyram +
tebuconazole
(Luna Experience)
3.3 F
17 fl oz/acre
7
0.5
APPLY ONLY TO WATERMELON. Make no more than 2
applications before alternating to a fungicide with different
active ingredients. Do not rotate with tebuconazole.
0.35 lb/acre
0
0.5
Apply in sufficient water to obtain runoff to soil surface.
0.5 to 1 lb/treated
acre
0
2
Soil surface application in 7-inch band.
0.5 to 1 lb/acre
0
2
Preplant incorporated (broadcast or band); soil spray
(broadcast or band); or injection (drip irrigation).
4 to 8 pt/treated acre
0.5 to 1 lb/acre
0
2
Preplant incorporated or surface application.
propamocarb
(Previcur Flex) 6 F
12.8 fl oz/100 gal
0.6 lb/100 gal
2
0.5
Rates based on rock wool cube saturation in the
greenhouse. See label for use in seed beds, drip system,
and soil drench.
ametoctradin +
dimethomorph
(Zampro) 4.38 SC
14 oz/A
0.48 lb/acre
0
0.5
Make no more than 2 applications before alternating to a
fungicide with different active ingredients. Do not rotate with
Forum. Maximum of 3 applications per crop per season.
1
4 hr
Make no more than one application before alternating with a
fungicide with a different mode of action. Apply no more
than 2.88 quarts per crop per acre per season. Resistance
reported.
thiophanate-methyl
(Topsin M) 70 WP
Cottony leak
(Pythium)
metalaxyl
(MetaStar) 2 E
Damping off
(Pythium)
and fruit rot
mefenoxam
(Ridomil Gold) 4 SL
Downy mildew
metalaxyl
(MetaStar) 2 E
azoxystrobin
(Quadris) 2.08 F
0.5 lb/acre
See label
See label
See label
chlorothalonil +
potassium phosphite
(Catamaran) 5.27 SC
6 pints/acre
3.3 pints/acre
0
0.5
Apply no more than 50 pints per crop per acre per season.
chlorothalonil +
zoxamide (Zing!)
36 fl oz/acre
1.18 lb/acre
0.20 lb/acre
0
0.5
May cause sunburn in watermelon fruit, see label for details.
cyazofamid
(Ranman) 400 SC
0.054 to 0.071 lb/
acre
0
0.5
Do not apply more than 6 sprays per crop. Make no more
than 3 consecutive applications followed by 3 applications of
fungicides from a different resistance management group.
cymoxanil
(Curzate) 60 DF
3.2 oz/acre
1.9 oz/acre
3
0.5
Use only in combination with labeled rate of protectant
fungicide (e.g., mancozeb or chlorothalonil).
dimethomorph
(Forum) 4.17SC
6 fl oz/acre
3.13 oz/acre
0
0.5
Must be applied as a tank mix with another fungicide with a
different mode of action. Do not make more than two
famoxadone +
cymoxanil (Tanos)
50WP
8 oz/acre
4 oz/acre
3
0.5
Do not make more than one application before alternating
with a fungicide that has a different mode of action. Must be
tank-mixed with contact fungicide with a different mode of
action.
Fenamidone
(Reason) 500 SC
5.5 fl oz/acre
0.178 lb/acre
14
0.5
Begin applications when conditions favor disease
development, and continue on 5 to 10 day interval. Do not
apply more than 22 fluid ounces per growing season.
Alternate with fungicide from different resistance
management group, and make no more than 4 total
applications of Group 11 fungicides per season.
See label
See label
See label
Fluazinam
(Omega 500F)
fluopicolide
(Presidio) 4F
fosetyl-AL
(Aliette)
80 WDG
mandipropamid
(Revus) 2.08F
0.75 to 1.5 pints/acre
3 to 4 fl oz/acre
2 to 5 lb/acre
0.09 to 0.125 lb/acre
1.6 to 4 lb/acre
30
0.5
APPLY ONLY TO MELONS. Initiate applications when
conditions are favorable for disease development or when
disease symptoms first appear. Repeat applications on a
7- to 10-day schedule.
2
0.5
Tank mix with another downy mildew fungicide with a
different mode of action.
0.5
0.5
Do not tank mix with copper-containing products. Mixing
with surfactants or foliar fertilizers is not recommended.
0.5
For disease suppression only. Resistance reported.
8 fl oz/acre
0.13 lb/acre
1
mancozeb (various)
See label
See label
See label
mefenoxam +
chlorothalonil
(Ridomil Gold Bravo,
Flouronil) 76.5 WP
2 to 3 lb/acre
1.5 lb/acre
7
2
Spray at first appearance and repeat at 14 day intervals.
Apply full rate of protectant fungicide between applications.
Avoid late-season application when plants reach full
maturity. Resistance reported.
propamocarb (Previcur
Flex) 6 F
1.2 pt/acre
0.9 lb/acre
2
0.5
20 WG
8 to 12 oz/acre
1.6 to 2.4 oz/acre
0
0.5
Begin applications before infection; continue on a 7 to 14
day interval. Do not apply more than 6 pints per growing
season. Always tank mix with another Downy mildew
product.
Make no more than one application before alternating to a
fungicide with a different mode of action. Resistance
reported.
507
Labeled on all cucurbits.
Disease
Material
Downy mildew
(continued)
pyraclostrobin +
boscalid
(Pristine) 38 WG
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
4.8 to 7 oz/acre
0
1
Make no more than 4 applications per season. Resistance
reported.
trifloxystrobin
(Flint) 50 WDG
4 oz/acre
2 oz/acre
0
0.5
Begin applications preventatively and continue as needed
alternating applications of Ridomil Gold Bravo on a 7 to14
day interval. Resistance reported.
zoxamide + mancozeb
(Gavel) 75 DF
1.5 to 2 lb
1.13 to 1.5 lb
5
2
Begin applications when plants are in 2-leaf stage, and
repeat at 7 to 10 day intervals. Now labeled on all cucurbits.
Maximum 8 applications per season.
Fusarium wilt
prothioconazole
(Proline 480 SC)
5.7 fl oz/acre
7
0.5
One soil and two foliar applications allowed by either
ground or chemigation application equipment (including drip
irrigation). Do not use in water used for hand transplanting.
Not for use in greenhouse/transplant house.
Gummy stem blight,
Black rot
prothioconazole
(Proline 480 SC)
5.7 fl oz/acre
7
0.5
One soil and two foliar applications allowed by either
ground or chemigation application equipment (including drip
irrigation). Do not use in water used for hand transplanting.
Not for use in greenhouse/transplant house.
tebuconazole
(Monsoon) 3.6 F
8 oz/acre
2 lb/acre
7
0.5
Maximum 3 applications per season. Apply as a protective
spray at 10 to 14 day intervals. Add a surfactant.
1
4 hr
Make no more than one application before alternating with a
than 2.88 quarts per crop per acre per season. Do not use
for Gummy stem blight where resistance to group 11(QoI)
fungicides exists.
12 to 14 fl oz/acre
1
0.5
Not for Target spot. Make no more than one application
before alternating with fungicides that have a different mode
of action. Apply no more than 56 fluid ounces per crop per
acre per season.
Leaf spots: Alternaria, azoxystrobin
Anthracnose
(Quadris) 2.08 F
(Colletotrichum),
Cercospora, Gummy
stem blight
(Didymella), Target
azoxystrobin +
spot (Corynespora)
difenoconazole
(Quadris Top) 1.67 SC
See label
See label
See label
chlorothalonil +
potassium phosphite
(Catamaran) 5.27 SC
6 pints/acre
3.3 pints/acre
0
0.5
Do not apply to watermelon fruit when stress conditions
conducive to sunburn occur.
(Switch) 62.5 WG
11 to 14 oz/acre
6.9 to 8.9 oz/acre
1
0.5
Only for Alternaria and Gummy stem blight. Make no more
than 2 applications before alternating to a different
fungicide. Maximum of 4 to 5 applications at high and low
rates.
16 to 20 fl oz/acre
5.3 to 7.1 oz/acre
7
0.5
Not for Target spot. Make no more than two sequential
applications before alternating with fungicides that have a
different mode of action. Apply no more than 80 fluid
ounces per crop per acre per season.
8 oz/acre
4 oz/acre
3
0.5
Only for Alternaria and Anthracnose; do not make more
than one application before alternating with a fungicide that
has a different mode of action; must be tank-mixed with
contact fungicide with a different mode of action
5.5 fl oz/acre
0.178 lb/acre
14
0.5
management group, and make no more than 4 total
applications of Group 11 fungicides per season.
See label
See label
See label
See label
See label
See label
Labeled on all cucurbits.
fluopyram +
tebuconazole
(Luna Experience)
3.3 F
8 to 17 fl oz/acre
7
0.5
APPLY ONLY TO WATERMELON. Not for Cercospora or
target spot. Make no more than 2 applications before
alternating to a fungicide with different active ingredients.
Do not rotate with tebuconazole.
fluopyram +
trifloxystrobin
(Luna Sensation)
1.67 F
7.6 fl oz/acre
0.25 lb/acre
0
0.5
APPLY ONLY TO WATERMELON and only to control
Alternaria and Anthracnose. Make no more than 2
active ingredients. Maximum 4 applications per season.
fluxapyroxad +
pyraclostrobin
(Merivon 500 SC)
4 to 5.5 fl oz/ acre
0
0.5
action. Maximum of 3 applications per crop.
0
4 hr
Begin preventive sprays when conditions favor disease
development, and continue on a 7-14 day spray interval as
needed.
4 pints/acre
0.21 lb
7
0.5
APPLY ONLY TO WATERMELON. Maximum 3
applications per crop.
difenoconazole +
cyprodinil
(Inspire Super) 2.82
SC
famoxadone +
cymoxanil
(Tanos) 50WP
fenamidone
(Reason) 500 SC
mancozeb (various)
polyoxin D zinc salt
(OSO 5% SC)
potassium phosphite +
tebuconazole (Viathon)
See label
508
Disease
Material
Leaf spots: Alternaria,
Anthracnose
(Colletotrichum),
Cercospora, Gummy
stem blight
(Didymella), Target
spot (Corynespora)
(continued)
Phytophthora blight
Active Ingredient
Harvest
Reentry
pyraclostrobin
(Cabrio) 20 WG
12 to 16 oz/acre
2.4 to 3.2 oz/acre
0
0.5
pyraclostrobin +
boscalid
(Pristine) 38 WG
4.8 to 7 oz/acre
0
1
Not for target spot. Do not use for gummy stem blight where
resistance to group 7 and group 11 fungicides exists. Use
highest rate for anthracnose. Make no more than 4
thiophanate-methyl
(Topsin M) 70 WP
0.5 lb/acre
0.35 lb/acre
0
0.5
Spray at first appearance and then at 7 to 10 day intervals.
Resistance reported in gummy stem blight fungus.
zoxamide + mancozeb
(Gavel) 75 DF
1.5 to 2 lb
1.13 to 1.5 lb
5
2
ametoctradin +
dimethomorph
(Zampro) 4.38SC
14 oz/A
0.48 lb/acre
0
0.5
fungicide with different active ingredients. Do not rotate with
Forum. Maximum of 3 applications per crop per season.
Apply at planting as a preventive drench treatment. Addition
of a spreading or penetrating adjuvant is recommended
cyazofamid
(Ranman) 400 SC
2.75 lf oz/acre
0.071 lb/acre
0
0.5
Do not apply more than 6 sprays per crop. Make no more
than 3 consecutive applications followed by 3 applications
of fungicides from a different resistance management
group. Resistant isolates have been found.
6 fl oz/acre
3.13 oz/acre
0
0.5
Must be applied as a tank mix with another fungicide with a
different mode of action. Do not make more than two
3 to 4 fl oz/acre
0.09 to 0.125 lb/acre
2
0.5
Tank mix with another Phytophthora fungicide with a
different mode of action. May be applied through drip
irrigation to target crown rot phase.
8 fl oz/acre
0.13 lb/acre
0
0.5
For disease suppression only; apply as foliar spray with
copper based fungicide.
azoxystrobin +
difenoconazole
12 to 14 fl oz/acre
1
0.5
fungicides that have a different mode of action. Apply no
more than 56 fluid ounces per crop per acre per season.
fluxapyroxad +
pyraclostrobin (Merivon
500 SC)
0
0.5
trifloxystrobin
(Flint) 50 WDG
1.5 to 2 oz/acre
0.75 to 1 oz/acre
0
0.5
fungicides that have a different mode of action. Begin
applications preventively when conditions are favorable for
disease and continue as needed on a 7 to 14 day interval.
pyraclostrobin
(Cabrio) 20WG
12 to 16 oz/acre
2.4 to 3.2 oz/acre
0
0.5
Make no more than 1 application before alternating to a
fungicide with a different mode of action.
(Actigard) 50 WP
0.5 to 1 oz/acre
0.25 to 0.5 oz/acre
0
0.5
season.
azoxystrobin +
difenoconazole
12 to 14 fl oz/acre
1
0.5
fungicides that have a different mode of action. Apply no
more than 56 fluid ounces per crop per acre per season.
See label
See label
See label
chlorothalonil +
potassium phosphite
(Catamaran) 5.27 SC
6 pints/acre
3.3 pints/acre
0
0.5
16 to 20 fl oz/acre
7
0.5
action. Apply no more than 80 fl oz per crop per acre per
season.
(Switch) 62.5 WG
11 to 14 oz/acre
6.9 to 8.9 oz/acre
1
0.5
different fungicide. Maximum of 4 to 5 applications at high
and low rates. Not for target spot or anthracnose or
cecospora.
See label
See label
See label
3.4 oz/acre
0.02 lb/acre
0
4 hr
Do not make more than 2 applications per crop.
fluopyram +
tebuconazole
(Luna Experience)
3.3F
8 to 17 fl oz/acre
7
0.5
APPLY ONLY TO WATERMELON. Make no more than 2
active ingredients. Do not rotate with tebuconazole.
fluxapyroxad +
pyraclostrobin (Merivon
500 SC)
0
0.5
dimethomorph
(Forum) 4.17SC
fluopicolide
(Presidio) 4F
mandipropamid
(Revus) 2.08F
Plectosporium blight
Powdery mildew
Minimum Days
Formulation
difenoconazole +
cyprodinil
(Inspire Super) 2.82
SC
cyflufenamid
(Torino) 0.85 SC
509
Do not use for Gummy stem blight where resistance to
group 11 (QoI) fungicides exists. Make no more than one
application before alternating to a fungicide with a different
mode of action.
Cercospora and Alternaria only. Begin applications when
plants are in 2-leaf stage, and repeat at 7 to 10 day
intervals. Now labeled on all cucurbits. Maximum 8
Minimum Days
Disease
Material
Formulation
Active Ingredient
Harvest
Reentry
Powdery mildew
(continued)
metrafenone (Vivando)
15.4 fl oz/acre
0.3 lb/acre
0
0.5
myclobutanil
(Rally) 40 WP
2.5 to 5 oz/acre
1 to 2 oz/acre
0
1
12 to 16 fl oz/acre
1
0.5
4.8 to 7 oz/acre
0
1
4 to 6 fl oz/acre
1 to 1.3 fl oz/acre
3
0.5
sulfur (various)
See label
See label
See label
tebuconazole
(Monsoon) 3.6F
4 to 6 fl oz/acre
1.5 to 2 lb/acre
7
0.5
Apply before disease appears when conditions favor
development and repeat at 10 to 14 day intervals; max 24
triflumizole (Procure)
50 WS
4 to 8 oz/acre
2 to 4 oz/acre
0
0.5
Begin applications at vining or first sign of disease, and
repeat at 7 to 10 day intervals.
(Actigard) 50 WP
0.5 to 1 oz/acre
0.25 to 0.5 oz/acre
0
0.5
season.
See label
See label
See label
chlorothalonil +
potassium phosphite
(Catamaran) 5.27 SC
6 pints/acre
3.3 pints/acre
0
0.5
14
0.5
APPLY ONLY TO MELONS.
penthiopyrad
(Fontelis) 1.67 SC
pyraclostrobin +
boscalid
(Pristine) 38 WG
quinoxyfen
(Quintec) 2.08 SC
Scab
Vine decline
(Monosporascus
cannonballus)
fludioxonil (Cannonball
WG)
4 to 8 oz/acre
510
Supplemental label expires Dec. 31, 2017. Begin
applications prior to disease and continue in a 7- to 10-day
interval.
Apply no more than 1.5 pound per acre per crop. Observe a
30-day plant-back interval.
Make no more than 2 sequential applications before
switching to another fungicide. Do not rotate with Pristine or
Luna Experience.
Make no more than 4 applications per season.
different fungicide. Maximum of 24 fluid ounces/acre per
year. DO NOT USE ON SUMMER SQUASH or
CUCUMBER; labeled on winter squashes, pumpkins,
gourds, melon and watermelon.
See label See label. Rates vary depending on the formulation. Do not
use when temperature is over 90 degrees F or on sulfursensitive varieties.
Table 10-27. Efficacy of Products for Disease Control in Cucurbits
Fungicide groupF
Preharvest interval
(Days)
Alternaria Leaf Spot
Angular Leafspot
Anthracnose
Bacterial Fruit Blotch
Belly Rot
Cercospora Leaf Spot
Cottony Leak
Damping off (Pythium)
Downy Mildew
Gummy Stem Blight
Phytophthora Blight
(foliage and fruit)
Phytophthora Blight
(crown and root)
Plectosporium Blight
Powdery Mildew
Target Spot
21
0
NC
ND
NC
F
NC
NC
ND
ND
ND
NC
ND
ND
NC
ND
NC
45 + 40
0
ND
NC
NC
NC
NC
NC
ND
ND
F
NC
G
G
NC
NC
NC
11
1
G
NC
G
NC
F
G
NC
NC
NCR
NCR
NC
NC
F
NCR
G
11 + 3
1
ND
NC
G
NC
ND
ND
ND
ND
ND
F
ND
ND
F
F
ND
Chlorothalonil5 (various)
M
0
G
NC
G
NC
NC
G
NC
NC
F
F
NC
NC
F
F
G
cyazofamid (Ranman)
21
0
NC
NC
NC
NC
NC
NC
ND
NC
G
NC
F
NC
NC
NC
NC
cyflufenamid (Torino)
U6
0
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
E
NC
cymoxanil (Curzate)
27
3
NC
NC
NC
NC
NC
NC
ND
ND
F
NC
F
NC
NC
NC
NC
9 + 12
1
ND
NC
F
NC
ND
ND
NC
NC
NC
F
NC
NC
F
F
NC
3+9
7
ND
NC
ND
NC
NC
ND
NC
NC
NC
F
NC
NC
F
F
ND
40
0
NC
NC
NC
NC
NC
NC
NC
NC
P
NC
P
NC
NC
NC
NC
11 + 27
3
ND
NC
ND
NC
NC
ND
NC
NC
F
NC
ND
NC
NC
NC
NC
fenamidone (Reason)
11
14
F
NC
NC
NC
NC
NC
ND
NC
FR
NC
F
NC
NC
NC
NC
fixed copper (various)P
M
1
P
F
P
F
NC
F
NC
NC
P
P
ND
NC
P
P
P
43
2
NC
NC
NC
NC
NC
NC
NC
NC
PR
NC
F
F
NC
NC
NC
fluopyram + tebuconazole (Luna Experience)
7+3
7
ND
NC
NC
NC
ND
NC
NC
NC
NC
G
NC
NC
NC
G
NC
fluopyram + trifloxystrobin (Luna Sensation)
7 + 11
0
ND
NC
F
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
F
NC
kresoxim-methyl (Sovran)
11
0
ND
NC
ND
NC
ND
ND
NC
NC
ND
NCR
ND
NC
ND
NCR
ND
mancozeb (various)5
M
5
F
NC
G
NC
NC
G
NC
NC
F
F
P
NC
F
P
G
M+M
5
P
F
P
F
NC
P
NC
NC
F
NC
P
NC
P
P
F
40
0
NC
NC
NC
NC
NC
NC
NC
NC
NCR
NC
F
P
NC
NC
NC
mefenoxam4,3 (Ridomil Gold EC, Ultra Flourish)
4
0
NC
NC
NC
NC
NC
NC
FR
GR
NC
NC
FR
FR
NC
NC
NC
R
R
R
F
F
R
NC
F
F
F
FR
P
FR
NC
P
NC
P
Product1
acibenzolar-S-methyl (Actigard)
ametoctradin + dimethomorph (Zampro)
Azoxystrobin2 (Quadris)
azoxystrobin + difenoconazole (Quadris Top)
Famoxadone2 + cymoxanil (Tanos)
mancozeb + fixed copper4 (ManKocide)
Mefenoxam2 + chlorothalonil5 (Ridomil Gold/Bravo,
Flouronil)
4+M
0
F
NC
F
NC
NC
F
F
Mefenoxam2 + copper5 (Ridomil Gold/Copper)
4+M
5
P
P
F
P
NC
P
FR
Mefenoxam2 + mancozeb5 (Ridomil Gold MZ )
F
FR
F
4+M
5
F
NC
F
NC
NC
F
FR
FR
FR
F
FR
NC
F
NC
F
Myclobutanil2 (Rally)
3
0
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
F
NC
7
1
ND
NC
F
NC
ND
ND
NC
NC
NC
NCR
NC
NC
NC
F
NC
33
0.5
NC
NC
NC
NC
NC
NC
NC
NC
P
NC
NC
F
NC
NC
NC
33 + 3
7
ND
NC
ND
NC
ND
ND
ND
ND
P
F
ND
ND
NC
F
NC
propamocarb (Previcur Flex)
28
2
NC
NC
NC
NC
NC
NC
NC
ND
F
NC
G
NC
NC
NC
NC
pyraclostrobin2 (Cabrio)
11
0
G
NC
G
NC
NC
ND
NC
NC
NCR
NCR
P
NC
G
NCR
E
11 + 7
0
G
NC
F
NC
ND
G
NC
NC
NCR
NCR
P
NC
F
F
E
quinoxyfen (Quintec)
13
3
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
E
NC
Sulfur (various) P
M
0
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
G
NC
tebuconazole (Monsoon)
3
7
ND
NC
NC
NC
NC
ND
NC
NC
NC
F
NC
NC
NC
F
NC
thiophanate-methyl3 (Topsin M)
1
1
F
NC
F
NC
F
F
NC
NC
NC
F
NC
NC
F
NCR
P
trifloxystrobin3 (Flint)
11
0
G
NC
G
NC
ND
ND
NC
NC
NCR
NCR
NC
NC
G
NCR
G
3
0
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
F
NC
22 + M
5
F
NC
F
NC
NC
F
NC
NC
F
F
P
NC
F
P
F
6
Phosphonate (Aliette, Agri-Fos, Phostrol, ProPhyte)
potassium phosphite + tebuconazole (Viathon)
pyraclostrobin2 + boscalid (Pristine)
triflumizole (Procure)
zoxamide + mancozeb (Gavel)
1
2
3
4
5
6
P
F
R
Curative activity; locally systemic.
Systemic.
When used in combination with chlorothalonil or mancozetb, gives increased control.
Contact control only; no systemic control.
Check manufacturers label for compatibility with other products.
Can be phytotoxic at temperatures above 90 degrees F; read the label carefully.
511
Table 10-28. Importance of Alternative Management Practices for Disease Control in Cucurbits
P
P
F
G
F
F
F
Deep plowing
P
NC
P
F
P
F
P
F
P
F
P
2
NC NC ND NC NC NC NC
F
NC
F
P
P
G
G
F
F
F
F
F
F
NC NC
G
NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC
Crop rotation with non-host (2 to 3 years)
Destroy crop residue immediately
P
F
F
Target spot
G
P
Root knot
P
1
NC
Pythium damping off
G
Change planting date from Fall to Spring
P
NC NC
Powdery mildew
P
Plectosporium blight
NC
Phytophthora blight
NC NC
P
Mosaic virus
F
F
Gummy stem blight
F
F
Downy mildew
P
F
Cottony leak
Bacterial fruit blotch
F
F
Choanephora fruit rot
Anthracnose
P
Belly rot
Angular leaf spot
Strategy
Bacterial wilt
Alternaria leaf blight
Cercospora leaf spot
P
G
G
F
NC
NC
P
F
NC NC NC
F
NC
F
F
NC
P
F
F
NC NC
F
P
NC NC NC
F
NC
P
P
NC
P
F
P
P
P
NC
P
F
F
F
P
P
F
NC
F
P
F
F
F
F
F
P
NC NC
NC NC
P
NC NC NC
F
Soil organic amendments3
ND NC ND NC NC
Insecticidal/horticultural oils4
NC NC NC NC
pH management (soil)
NC NC NC NC NC NC NC NC ND NC NC NC ND NC NC ND ND NC
NC NC NC NC NC
F
NC
P
F
NC NC NC
F
NC NC
F
P
NC
NC NC NC NC NC
P
NC
P
F
NC
F
NC
F
NC NC
F
P
NC
NC NC NC NC NC
F
NC
P
F
NC
F
NC
F
P
NC NC NC NC
Postharvest temperature control (fruit)
NC NC
F
NC
F
F
NC
F
NC
F
F
NC NC NC NC
Reflective mulch (additional effect over plastic mulch)
NC NC NC NC NC NC NC NC NC NC NC
F
F
F
NC
P
ND NC
F
NC ND NC
NC NC NC NC NC NC
F
F
P
NC NC
P
P
P
P
F
P
P
P
P
NC
P
P
P
Rogue diseased plants/fruit (home garden)
F
P
P
P
P
NC
P
P
P
P
P
F
F
G
NC NC NC NC NC NC
NC NC NC NC
Soil solarization (reduce soil inoculum)
P
NC
P
P
E
F
Resistant cultivars5
Destroy volunteer plants
1
2
3
4
5
NC NC
E
F
F
F
P
NC
P
P
NC NC NC
NC NC
P
NC
NC
F
NC NC NC NC NC NC
E
NC NC NC NC
F
F
NC
E
F
NC NC
F
P
P
E
F
F
ND
F
P
P
NC NC NC NC NC NC
P
E
F
G
F
NC NC NC
NC
E
F
F
F
NC NC NC NC NC NC
Row covers (insect exclusion)
ND NC
P
P
NC NC
E
F
NC
F
NC
P
F
Early planting reduces risk.
Air movement can be encouraged by increasing plant spacing, orienting beds with prevailing wind direction and increasing exposure of field to prevailing
wind.
Soil organic amendments = cover crops; composted organic wastes.
Insecticidal/Horticultural oil = Sunspray Ultra-Fine Spray Oil (Sun Company, Inc.), JMS Stylet oil; Safe-T-Side (Brandt Consolidated, Inc.); PCC 1223
(United Ag Products).
Resistance available in some cucurbits.
512
Example Spray Program for Foliar Disease Control in Watermelon Production
This spray schedule is designed to manage gummy stem blight, anthracnose, powdery mildew, bacterial diseases (fruit blotch and leaf spots), and downy
mildew on watermelon. At the beginning of the season, choose the schedule that will manage the diseases most common in previous years. Disease
identification is critical as the season develops. Schedules are inter-changeable—you can switch from one schedule to another if a different disease
becomes the most important one during the season.
If this spray schedule is used to select fungicides for other cucurbits (vine crops), note that not all fungicides in this spray schedule are labeled on other
cucurbits. Luna Experience and Luna Sensation are registered only on watermelon. Quintec is not registered on cucumber. To control powdery mildew on
other cucurbits, substitute Procure for Luna fungicides or Quintec.
Table 10-29. Example Spray Program for Foliar Disease Control in Watermelon Production
Spray Schedules for Spring Watermelon Crops
1
Spray
Focus on
Gummy Stem Blight and
Anthracnose
Focus on
2
Powdery Mildew
Focus on
3
Bacterial Diseases
Spray Schedule for Fall Crops
or
4
Downy Mildew
1 (vine run)
mancozeb + copper
mancozeb + copper
mancozeb + copper
chlorothalonil or Catamaran
2
mancozeb + copper
tebuconazole or
Luna Sensation
3
tebuconazole
tebuconazole + Quintec
tebuconazole + copper
chlorothalonil + Zampro
4
chlorothalonil
chlorothalonil
mancozeb + copper
mancozeb + Flint
5
Inspire Super or
tebuconazole
mancozeb + Torino or
mancozeb + Procure
Inspire Super + copper
mancozeb + Ranman
6
mancozeb + Flint or
Luna Sensation6
Luna Sensation
mancozeb + Cabrio
Quadris Top
7
mancozeb + Quintec or Switch7
Switch
Switch
Gavel
8
Quadris Top
mancozeb + Quintec
mancozeb + Quintec
chlorothalonil
5
5
1
Each spring schedule includes at least one fungicide application to manage gummy stem blight, anthracnose, powdery mildew, and bacterial diseases
(fruit blotch and leaf spots). Fungicides with a 7-day PHI are not recommended during the harvest period (usually after week 5); note that mancozeb and
Gavel have a 5-day PHI.
2
Fungicides included to manage powdery mildew are in bold.
3
Do not mix copper with chlorothalonil. When spraying copper weekly, use the lowest labeled rate. Alternatively, spray copper weeks 1, 3, and 5 at the
highest labeled rate.
4
Fungicides included to manage downy mildew are in bold. Use this schedule if downy mildew appears in spring crops.
5
To protect against bacterial diseases, substitute mancozeb + copper.
6
Use mancozeb + Cabrio (or Quadris or Flint) if anthracnose is the major disease; use Luna Sensation if powdery mildew and anthracnose are present or
expected.
7
Use mancozeb + Quintec if powdery mildew or anthracnose is present; use Switch if gummy stem blight is the major disease.
Eggplant
Table 10-30. Disease Control Products for Eggplant
Disease
Material
Leaf blights,
fruit rots
azoxystrobin
(Quadris) Flowable
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
0.1 to 0.25 lb/acre
0
4 hr
Apply at flowering to manage green fruit rot. Limit of 61.5
fluid ounces per acre per season. Make no more than one
application before alternating with fungicides that have a
(Quadris Top) 29.6SC
8 to 14 fl oz/acre
0
0.5
Limit of 55.3 fluid ounces per acre per season. Make no
more than two consecutive applications before rotating to
another effective fungicide with a different mode of action.
boscald
(Endura)
2.5 to 3.5 oz/acre
0
0.5
Limit of 21 ounces per acre per season. Make no more
than two sequential applications before alternating with
See label
See label
See label
2 to 2.44 pt/acre
0.84 to 1.02 pt/acre
3
See label
See label
See label
chlorothalonil + cymoxanil
(Ariston)
513
0.5
Limit of 18.1 pints per acre per year.
See label See label. Rates vary depending on the formulation. Make
first application 7 to 10 days after transplanting. Carefully
examine field for disease to determine need for additional
applications. If disease is present, make additional
applications at 5-day intervals. Do not spray copper when
temperatures are above 90 degrees F.
Disease
Material
Leaf blights,
fruit rots
(continued)
fenamidone
(Reason) 500SC
Formulation
Active Ingredient
Harvest
Reentry
0.178 to 0.267 lb/ acre
14
0.5
Limit of 24.6 fluid ounces per growing season. Make no
more than one applications before rotating to another
2 to 5.7 fl oz/acre
3
0.5
more than one application before alternating with
fungicides that have a different mode of action. NOTE: Do
not overhead irrigate for 24 hours following a spray
application.
mancozeb (various)
See label
See label
See label
mancozeb + copper
(ManKocide)
2 to 3 lb/acre
1.2 to 1.8 lb/acre
7
2
16 to 24 fl oz/acre
0
0.5
SUPPRESSION ONLY. Limit of 72 fluid ounces per acre
per year. Make no more than two consecutive applications
before rotating to another effective fungicide with a
8 to 12 oz/acre
1.6 to 2.4 oz/acre
0
4 hr
Apply at flowering to manage green fruit rot. Limit of 96
ounces per acre per season. Make no more than one
sequential application before alternating with fungicides
that have a different mode of action.
0
0.5
cyazofamid
(Ranman Fungicide)
2.75 fl oz/acre
0.071 lb/acre
0
0.5
Limit of 16.5 fluid ounces per acre per season. Apply to the
base of the plant at transplanting or in the transplant water.
Make no more than three consecutive applications followed
by three consecutive applications of another effective
See label
See label
See label
fluoxastrobin
(Aftershock, Evito 280SC)
penthiopyrad
(Fontelis)
pyraclostrobin
(Cabrio) EG 20%
pyraclostrobin + fluxapyroxad
(Priaxor)
Phytophthora
blight
dimethomorph
(Acrobat, Forum)
6 fl oz/acre
2.61 fl oz/acre
0
Limit of 39 pounds per acre per season.
See label See label. Rates vary depending on the formulation. Begin
applications when conditions first favor disease
development and repeat at 3 to 10 day intervals if needed
depending on disease severity. Use the higher rates when
conditions favor disease. Do not spray copper when
temperatures are above 90 degrees F.
0.5
per season. Make no more than two sequential before
action. NOTE: Must tank mix with another fungicide
with a different mode of action.
mancozeb (various)
See label
See label
See label
mancozeb + copper
(ManKocide)
2 to 3 lb/acre
1.2 to 1.8 lb/acre
7
2
SUPPRESSION ONLY. Limit of 39 pounds per acre per
season.
2 lb/acre
1.3 lb/acre
7
2
See label for an optimal spray program. Limit of four
applications per crop per year. Do not exceed 0.4 pound
a.i. per acre per season of mefenoxam + metalaxyl
(MetaStar).
8 to 10 oz/acre
4 to 5 oz/acre
3
0.5
SUPPRESSION ONLY. Make no more than one
application before alternating with a fungicide with a
different mode of action. NOTE: Must tank mix with
another fungicide with a different mode of action (i.e
maneb or copper).
8.2 fl oz/acre
0.267 lb/ acre
14
0.5
SUPRESSION ONLY. Limit of 24.6 fluid ounces per
growing season. Make no more than one application
30
0.5
Apply as a soil drench at 1.5 pints per acre. For foliar
applications use 1 pt per acre. Limit of 9 pints per acre per
season.
mefenoxam + copper
hydroxide
(Ridomil Gold/Copper)
famoxadone + cymoxanil
(Tanos)
fenamidone
(Reason) 500SC
Powdery
mildew
Minimum Days
fluazinam
(Omega) 500F
1 to 1.5 pt/acre
fluopicolide
(Presidio)
3 to 4 fl oz/acre
0.09 to 0.125 lb/acre
2
0.5
than two times sequentially before alternating with
fungicides that have a different mode of action. NOTE:
Must be tank-mixed with another mode of action
product.
mandipropamid
(Revus, Micora)
8 fl oz/acre
0.13 lb/acre
1
0.5
per season. NOTE: Must tank mix with another
fungicide with a different mode of action (i.e. copper).
amectoctradin +
dimethomorph
(Zampro)
14 fl oz/acre
0.27 lb/acre
4
0.5
more than two sequential applications before rotating to
0
4 hr
8 to 14 fl oz/acre
0
0.5
azoxystrobin
(Quadris) Flowable
(Quadris Top) 29.6SC
514
Disease
Material
Powdery
Mildew
(continued)
Formulation
Active Ingredient
Harvest
Reentry
See label
See label
See label
(Ariston)
2 to 2.44 pt/acre
3
0.5
pyraclostrobin
(Cabrio) EG 20%
8 to 16 oz/acre
1.6 to 2.4 oz/acre
0
4 hr
0
0.5
8 to 16 oz/acre
1.6 to 2.4 oz/acre
0
0.5
than one sequential application before alternating with
2 to 5.7 fl oz/acre
3
0.5
application.
0.32 TO 0.72 oz/acre
0
4 hr
Suppression only. Can be applied using banded or
irrigation water applications. Limit of 4.2 ounces a.i. per
acre per season.
12 to 16 oz/acre
1.6 to 2.4 oz/acre
0
4 hr
Suppression only. Apply at flowering to manage green
fruit rot. Limit of 96 ounces per acre per season. Make no
more than one sequential application before alternating
with fungicides that have a different mode of action.
(Priaxor)
0
0.5
per season. Make no more than two consecutive
applications before rotating to another effective fungicide
mefenoxam
(Ridomil Gold, Ultra Flourish)
Check label; varies
between products
Check label; varies
between products
—
2
May only be applied at planting. Apply in a 12 to 16
inches band or in 20 to 50 gallons water per acre in
transplant water. Mechanical incorporation or 0.5 to 1 inch
irrigation water needed for movement into root zone if rain
is not expected. After initial application, two supplemental
applications (1 pint per treated acre) can be applied.
metalaxyl (MetaStar) 2E
0.5 to 1 lb/acre
7
2
Limit of 12 pints per acre per season. Preplant (soil
incorporated), at planting (in water or liquid fertilizer), or as
a basil-directed spray after planting. See label for the
guidelines for supplemental applications.
azoxystrobin
(Equation, Quadris, Satori)
Flowable
0.4 to 0.8 fl oz/1,000
row feet
0.006 to 0.013 lb/1,000
row feet
—
4 hr
Make in-furrow or banded applications shortly after plant
emergence. Under cool, wet conditions, crop injury from
soil directed applications may occur.
0.32 TO 0.72 oz/acre
0
4 hr
SUPPRESSION ONLY. Can be applied using banded or
irrigation water applications. Limit of 4.2 ounces a.i. per
acre per season.
(Priaxor)
Pyraclostrobin
(Cabrio) EG
Southern blight fluoxastrobin
(Sclerotium
rolfsii)
polyoxin D
(OSO 5%)
pyraclostrobin
(Cabrio) EG 20%
Pythium root
rot
Rhizoctonia
seedling and
root rot
Minimum Days
Verticillium wilt Polyoxin D
(OSO 5%)
Endive
Table 10-31. Disease Control Products for Endive
Minimum Days
Disease
Material
Formulation
Active Ingredient
Downy
mildew
amectoctradin + dimethomorph
(Zampro 525 SC)
14 fl oz/acre
6.6 oz/acre
0
12 hr
alternating to a fungicide with a different mode of action. Addition
of an adjuvant may improve performance (see label for specifics).
Do not apply more than 42 fluid ounces per acre per season.
12.3 to 15.4 fl oz/
acre
0
4 hr
Make no more than two sequential applications before alternating
with fungicides that have a different mode of action. Apply no
more than 2.88 quarts per crop per acre per season.
azoxystrobin
(Satori, Quadris) 2.08 F
cymoxanil/famoxadone (Tanos)
8.0 oz
0.178 to 0.267 fl oz
3
0.5
See label for directions.
6.4 oz/acre
3.2 oz/acre
0
0.5
Must be applied as a tank mix with another fungicide active
against downy mildew. Do not make more than two sequential
applications.
fenamidone (Reason 500 SC)
5.5 to 8.2 fl oz
0.178 to 0.267 fl oz
2
0.5
Alternate with fungicides with a different mode of action.
2 to 5 lb/acre
1.6 to 4 lb/acre
3
0.5
Do not mix with surfactants, foliar fertilizers, or products
containing copper.
3 to 4 fl oz/acre
0.178 to 0.267 fl oz
2
0.5
Must be tank-mixed with a fungicide with a different mode of
action. Do not exceed two sequential applications.
dimethomorph
(Acrobat, Forum) 50 WP
515
Table 10-31. Disease Control Products for Endive
Disease
Material
Downy
mildew
(continued)
mandipropamid (Revus) 2.08 F
Formulation
Active Ingredient
5.5 to 8 fl oz/A
0.65 to 0.9 fl oz/A
—
4 hr
Tank mix Micora with a non-Group 40 fungicide and begin
applications prior to disease development. DO NOT apply more
than two applications per crop, or in consecutive applications.
8 fl oz/acre
0.13 lb/acre
1
0.5
Apply prior to disease development and continue throughout
season at 7 to 10 day intervals; maximum 32 fluid ounces per
season.
0.1 to 0.20oz/acre
Pyraclostrobin (Cabrio)
12 to 16 oz/acre
Decay,
Seedling
blight,
damping-off
Fludioxonil (Spirato) 480FS
(Maxim) 4FS
0.08-0.16 fl oz/
100 lb of seed
Gray mold
rot
dichloran (Botran 75-W)
2 2/3 lb/acre
Leaf spots
Minimum Days
0
0.5
—
12
Used to control diseases of seed such as Aspergillus, Fusarium,
and Rhizoctonia among others. Does NOT control Pythium or
Phytophthora.
1.5 to 2 lb a.i.
14
0.5
Apply 7 days following transplanting. Repeat application when
plants are half mature. Do not apply to wilted plants or seedlings.
Two applications may be applied per season.
14 to 24 fl oz/acre
—
0
0.5
Begin applications before disease development. DO NOT make
more than two sequential applications before switching to a
azoxystrobin (Satori, Quadris)
2.08 F
6.2 to 15.4 fl oz
0.1 to 0.25 fl oz
0
4 hr
with fungicides that have a different mode of action. Apply no
more than 2.88 quarts per crop per acre per season.
Cyprodinil/fludioxonil (Switch 62.5
WDG)
11 to 14 oz/acre
6.9 to 8.8 fl oz
0
0.5
Switch also has activity against basal rot, Sclerotinia and Gray
mold. Alternate with a fungicide with a different mode of action
after 2 applications.
14 to 24 fl oz/acre
—
0
0.5
12 to 16 oz/acre
0
0.5
Lettuce drop
14 to 24 fl oz/acre
—
0
0.5
Powdery
mildew
14 to 24 fl oz/acre
—
0
0.5
6 fl oz
—
1
1
See label
See label
See
label
See
label
See label. Rates vary depending on the formulation. Apply at
early leaf stage and repeat every 10 to 14 days or as needed. Do
not apply if temperatures are expected to exceed 90 degrees F
within 3 days of application due to the risk of crop injury.
Triflumizole (Procure 480 SC)
6 to 8 fl oz/acre
3 to 6 fl oz
0
0.5
Applications should begin prior to disease development. Repeat
on a 14-day schedule. Do not apply more than 18 fluid ounces per
acre per season.
mefenoxam
((Ridomil Gold) 4 SL
1 to 2 pt/trt acre
0.5 to 1 lb/trt acre
—
2
metalaxyl (MetaStar) 2 E
4 to 8 pt/trt acre
—
2
14 to 24 fl oz/acre
—
0
0.5
See label
See label
See
label
See
label
See label. Rates vary depending on the formulation. Apply at
early leaf stage and repeat every 10 to 14 days or as needed. Do
not apply if temperatures are expected to exceed 90 degrees F
within 3 days of application due to the risk of crop injury.
1
12 hr
to a non-group 7 or non-group 11 fungicide. DO NOT apply more
than 33 fluid ounces per acre per season.
Quinoxyfen (Quintec)
sulfur (various)
Pythium
damping-off
Rust
sulfur (various)
Septoria leaf
spot
Fluxapyroxad; pyraclostrobin
(Merivon)
4 fl oz/acre
Alternate with fungicide with a different mode of action
Soil-incorporate at planting. Use proportionally less for band rate.
Apply preplant incorporated or surface application at planting.
Banded over the row, preplant incorporated, or injected with liquid
fertilizer.
Garlic
Table 10-32. Disease Control Products for Garlic
Disease
Material
Botrytis blight,
purple blotch,
downy mildew
azoxystrobin (Amistar,
Quadris) 2.08 F
(Quadris Top)
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
0
4 hr
Use upper rate for downy mildew and Botrytis. Do not
make more than two sequential applications.
14 fl oz/acre
2.38 lb/acre
7
0.5
Begin sprays prior to disease onset and spray on a 7 to
14 day schedule. Do not rotate with Group 11 fungicides.
1.0 pt/acre
0.52 lb/acre
7
2
Initiate sprays when conditions are favorable for disease
or at disease onset. Spray on a 7 to 10 day schedule.
516
Table 10-32. Disease Control Products for Garlic
Disease
Material
Botrytis blight,
purple blotch,
downy mildew
(continued)
difenoconazole + cyprodinil
(Inspire Super)
Harvest
Reentry
6.8 oz/acre
4.8 oz/acre
7
0.5
See label
See label
See
label
16 to 20 fl oz/acre
Not for downy mildew. Do not make more than 2
sequential applications or more than 6 applications per
season.
14
0.5
Make no more than two applications before alternating
with a fungicide with a different mode of action.
For Botrytis and downy mildew; tank mix with another
3 to 4 fl oz/acre
0.09 to 0.125 lb/acre
2
0.5
mefenoxam + mancozeb
(Ridomil Gold MZ)
2.5 lb/acre
—
7
2
2 lb/acre
—
7
2
8 to 12 oz/acre
1.6 to 2.4 oz/acre
7
0.5
(Pristine) 38 WG
4 to 7 oz/acre
7
1
Use highest rate for suppression only on downy mildew.
pyrimethanil (Scala) 5 F
9 or 18 fl oz/acre
0.35 or 0.7 lb/acre
7
0.5
Not for downy mildew. Use lower rate in a tank mix with
broad spectrum fungicide and higher rate when applied
alone. Do not apply more than 54 fluid ounces per crop.
4 to 6 fl oz/acre
1.5 to 2 lb/acre
7
0.5
Only labeled for purple blotch; apply before disease
appears when conditions favor purple blotch
development and repeat at 10 to 14 day intervals; maxim
um 32.5 fluid ounces per season.
dimethomorph (Acrobat,
Forum) 50 WP
6.4 oz/acre
3.2 oz/acre
0
0.5
Must be applied as a tank mix with another fungicide
active against downy mildew. Do not make more than two
amectoctradin +
14.0 fl oz/acre
0.47 lb/acre
0
12 hr
Tank-mix with a broad-spectrum fungicide like
chlorothaloni or mancozeb.
0
4 hr
Do not make more than two sequential applications.
iprodione (Rovral) 50 WP
4 lb/acre
2 lb/acre
—
1
Spray cloves as they are being covered by soil (38 to 40
inches bed spacing). One application per year.
metam-sodium (Vapam;
Sectagon)
37.5 to 75 gal/acre
160 to 320 lb/acre
—
2
Rate is based on soil properties and depth of soil to be
treated.
20.5 fl oz/acre
8 lb/acre
7
0.5
pyraclostrobin (Cabrio) 20 WG
White rot
(Sclerotium)
Active Ingredient
fluopicolide (Presidio) 4F
Downy mildew
Minimum Days
Formulation
Quadris) 2.08 F
Spray at first appearance, 7 to 14 day intervals.
Not for Botrytis. Use highest rate for downy mildew. Make
no more than 2 sequential applications and no more than
6 applications per season.
Apply in 4 to 6 inch band over/into furrow; maybe applied
in chemigation.
Hop
Table 10-33. Disease Control Products for Hop
Disease
Material
Downy mildew
(Pseudoperonospora
humuli)
Fosetyl-Al (Aliette WDG)
2.5/acre
See label
Formulation
Active Ingredient
Minimum Days
Harvest
Reentry
24
0.5
Apply as a directed foliar spray. When conditions are
warm and humid applications should be made
as follows: (1) when shoots are 6-12 inches high; (2)
after training when vines are 5-6 feet tall; (3)
approximately three weeks after the second
application; and (4) during bloom. Use sufficient
volume of water to insure complete coverage of
foliage.
See label
See label
6 fl oz/acre
7
0.5
Begin sprays prior to disease. Minimum interval is 10
days. Maximum 3 applications per season.
cymoxanil (Curzate
60DF)
3.2 oz/acre
7
0.5
Tank mix with a protectant fungicide. Begin
applications prior to disease and continue at 10- to
14-day intervals.
P potassium phosphite
(various)
See label
See label
See label
See label
See label
metalaxyl (Metastar 2E)
1 qt/acre
45
2
ametoctradin +
dimethomorph (Zampo)
11 to 14 fl oz/acre
7
0.5
517
Apply as a soil drench (1qt/acre in 20 gals) and follow
with foliar fixed copper applications. Apply as foliar
spray (1 quart/acre in 50 gals) in combination with
fixed copper. Do not make more than 3 applications
per season.
Begin applications prior to disease and continue at
10-day intervals. Do not make more than 3
Table 10-33. Disease Control Products for Hop
Disease
Material
Downy mildew
(Pseudoperonospora
humuli) (continued)
(Tanos)
Formulation
Harvest
Reentry
7
0.5
Begin applications prior to disease and continue at 6to 8-day intervals. Do not make more than 6
8 oz/acre
mefenoxam (Ridomil
Gold SL)
0.50 pt/acre
0.25 pt/acre
45
2
Can apply as soil drench or foliar spray, see label for
details. Tank mix with fixed copper.
8 fl oz/acre
0.13 lb/acre
7
4 hr
0.054 to 0.071 lb/acre
3
0.5
Begin applications prior to disease and continue at 7to 10-day intervals. Do not apply more than 32 fluid
ounces per season.
14
0.5
10- to 14-day intervals. Do not apply more than 16.5
fluid ounces per acre per season.
cyazofamid (Ranman
400 SC)
Powdery mildew
(Sphaerotheca humuli,
S. macularis)
Minimum Days
Active Ingredient
tebuconazole
(Folicur 3.6F)
4 to 8 fl oz/acre
trifloxystrobin (Flint)
See label
See label
14
0.5
Several rates available. Begin applications prior to
disease and continue at 10- to 14-day intervals.
Metrafenone (Vivando)
15.4 fl oz/acre
0.3 lb/acre
3
0.5
8.2 fl oz/acre
21
0.5
Do not make more than 4 applications per season.
Triflumizole
(Procure 400 SC)
12 fl oz/acre
7
0.5
14-day intervals. Do not apply more than 36 fluid
ounces per acre per season.
14
0.5
Ground and aerial applications allowed, see label for
details. Begin ground applications prior to disease
and continue at 10- to 21-day intervals. Do not make
more than 3 applications per season.
(Pristine)
See label
See label
Greens, Leafy Brassica (Collard, Kale, Mustard, Rape, Turnip)
Table 10-34. Disease Control Products for Greens, Leafy Brassica
Disease
Material
Formulation
Minimum Days
Active Ingredient
For turnips harvested for roots, see Root Vegetables
Alternaria leaf spot,
Cercospora leaf spot,
Anthracnose, White
spot, and various foliar
diseases
(see specific labels)
boscalid
(Endura 70 WG)
6 to 9 oz/acre
4.2 to 6.3 oz/acre
14
0.5
Begin applications prior to disease development, and continue
on a 7 to 14 day interval. Make no more than 2 applications
per season. Not labeled for turnip greens or roots.
12 to 14 fl oz/acre
3.5 to 4.1 oz/acre
1
0.5
Make no more than one application before alternating to
another fungicide with Group 11 mode of action (NOT Quadris
or Cabrio).
azoxystrobin
(Quadris 2.08SC)
6.2 to 15.4 fl oz/
acre
0.1 to 0.25 lb/acre
0
4 hr
alternating with fungicides that have a different mode of action.
May be applied to turnip grown for roots.
fluxapyroxad +
pyraclostrobin
(Priaxor 500 SC)
3
0.5
No more than two sequential applications before alternating
with fungicides that have a different mode of action. Maximum
of 3 applications. Do not apply to turnip greens or roots.
12 to 16 oz/acre
8 to 12 oz/acre
(turnip)
2.4 to 3.2 oz/acre
1.6 to 2.4 oz/acre
3
0.5
Begin applications prior to disease development and continue
on a 7- to 10-day interval. No more than 2 sequential
mode of action. Cabrio may be used for turnip harvested
for leaves. Cabrio cannot be used for turnip grown for
roots.
3 to 4 oz/acre
1.4 to 1.8 oz/acre
7
0.5
For optimum results use as a preventative treatment. Folicur
3.6 F must have 2 to 4 hours of drying time on foliage for the
active ingredient to move systemically into plant tissue before
rain or irrigation occurs. May be used for turnip harvested
for leaves. Not for use on turnip grown for roots.
11 to 14 oz/acre
6.9 to 8.7 oz/acre
7
0.5
Apply when disease first appears, and continue on 7 to 10 day
intervals. See label for complete list of greens.
penthiopyrad
(Fontelis 1.67 SC)
14 to 30 fl oz/acre
2.9 to 6.2 oz/acre
0
0.5
Make no more than two sequential applications before alternating with fungicides that have a different mode of action.
May be applied to turnips grown for roots.
difenoconazole +
cyprodinil
(Inspire Super 2.82SC)
16 to 20 fl oz/acre
5.2 to 6.5 oz/acre
7
0.5
penthiopyrad (Fontelis
1.67 SC)
14 to 30 fl oz/acre
2.9 to 6.2 oz/acre
0
0.5
May be applied to turnips grown for roots.
azoxystrobin +
difenoconazole
(Quadris Top 2.72 SC)
pyraclostrobin
(Cabrio 20 EG)
tebuconazole 6 F
(various)
cyprodonil + fludioxonil
(Switch 62.5WG)
Botrytis gray mold
518
Disease
Material
Botrytis gray mold
(continued)
difenoconazole +
cyprodinil
Downy Mildew
Powdery mildew
Minimum Days
Formulation
Active Ingredient
16 to 20 fl oz/acre
5.2 to 6.5 oz/acre
7
0.5
pyraclostrobin
(Cabrio 20 EG)
12 to 16 oz/acre
2.4 to 3.2 oz/acre
3
0.5
on a 7- to 10-day interval. Make no more than 2 sequential
applications before alternating to a fungicide with a different
mode of action.
fluopicolide
(Presidio 4 SC)
3 to 4 fl. oz/acre
0.09 to 0.125 lb/acre
2
0.5
Make applications on a 7 to 10 day schedule. Presidio must be
tank mixed with another fungicide with a different mode of
action. Make no more than 2 sequential applications before
rotating to a fungicide with a different mode of action. Apply no
more than 12 ounces per acre per season.
cyazofamid
(Ranman 400 SC)
2.75 fl. oz/acre
0.072 lb/acre
0
0.5
Make applications on a -7 to 10-day schedule. Do not apply
more than 39.5 fluid ounces per acre per crop growing
season.
mandipropamid
(Revus 2.08 SC)
8.0 fl oz/acre
0.13 lb/acre
1
0.5
on a 7- to 10-day interval. Make no more than 2 consecutive
applications before switching to another effective non-group
40 fungicide. Not labeled for turnip greens or roots.
fenamidone
(Reason 500SC)
5.5 to 8.2 oz/acre
0.178 to 0.267 lb/
acre
2
0.5
Begin applications as soon as conditions become favorable for
disease development. Applications should be made on a 5 to
10 day interval. Do not make more than one application of
Reason 500 SC before alternating with a fungicide from a
different resistance management group.
amectoctradin +
dimethomorph
(Zampro 525 SC)
14 fl oz/acre
6.6 oz/acre
0
0.5
Addition of an adjuvant may improve performance (see label
for specifics).
dimethomorph
(Forum 4.16 SC)
6.4 oz/acre
3.2 oz/acre
0
0.5
Must be tank-mixed with another fungicide active against
Phytophthora blight. Do not make more than 2 sequential
applications before alternating to another effective fungicide
with a different mode of action. Do not make more than 5
applications per season. Not labeled for turnip greens or
roots.
fosetyl-Al
(Aliette 80W DG)
2 to 5 lb/acre
1.6 to 4 lb/acre
3
1
Apply when disease first appears; then repeat on 7 to 21 day
intervals. Do not tank mix with copper fungicides. A maximum
of 7 applications can be made per season. Not labeled for
turnip greens or roots.
potassium phosphite
2 to 4 pt/acre
2.1 lb/acre
0
4 hr
Apply when weather is foggy as a preventative. Do not apply
to plants under water or temperature stress. Spray solution
should have a pH greater than 5.5. Apply in at least 30 gallons
water per acre.
boscalid
(Endura 70 WG)
6 to 9 oz/acre
4.2 to 6.3 oz/acre
14
0.5
Not labeled for turnip greens or roots.
pyraclostrobin
(Cabrio 20 EG)
12 to 16 oz/acre
2.4 to 3.2 oz/acre
3
0.5
Begin applications prior to disease development and
sequential applications before alternating to a fungicide
with a different mode of action. Cabrio may be used for
turnip harvested for leaves. Cabrio cannot be used for
turnip grown for roots.
6 to 8 oz/acre
2.5 to 3.4 oz/acre
1
0.5
rotating with a fungicide with a different mode of action. Do
not rotate with Rally or Nova.
11 to 14 oz/acre
6.9 to 8.7 oz/acre
7
0.5
day intervals. See label for complete list of greens.
May be used on turnip where leaves only will be
harvested. Not for use on turnip grown for roots.
penthiopyrad
(Fontelis 1.67 SC)
14 to 30 fl oz/acre
2.9 to 6.2 oz/acre
0
0.5
action. May be applied to turnips grown for roots.
16 to 20 fl oz/acre
5.2 to 6.5 oz/acre
7
0.5
fluxapyroxad +
pyraclostrobin
(Priaxor 500 SC)
3
0.5
Maximum of 3 applications. Do not apply to turnip greens
or roots.
tebuconazole 6 F
(various)
3 to 4 oz/acre
1.4 to 1.8 oz/acre
7
0.5
For optimum results use as a preventative treatment. Folicur
3.6 F must have 2 to 4 hours of drying time on foliage for the
active ingredient to move systemically into plant tissue before
rain or irrigation occurs. May be applied to turnip grown for
roots.
triflumizole
(Procure 480SC)
cyprodonil + fludioxonil
(Switch 62.5WG)
519
Disease
Material
Minimum Days
Formulation
Active Ingredient
Rhizoctonia
bottom rot
boscalid
(Endura 70 WG)
6 to 9 oz/acre
4.2 to 6.3 oz/acre
14
0.5
applications per season; disease suppression only. Not
labeled for turnip greens or roots.
Sclerotinia stem rot
(white mold)
boscalid
(Endura 70 WG)
6 to 9 oz/acre
4.2 to 6.3 oz/acre
14
0.5
continue on a 7- to 14-day interval. Make no more than 2
applications per season. Not labeled for turnip greens or
roots.
penthiopyrad (Fontelis
1.67 SC)
16 to 30 fl oz/acre
0
0.5
(Contans WG)
1 to 4 lb/acre
0.05 to 0.2 lb/acre
0
4 hr
of action.
planting or transplanting. Do not apply other fungicides for 3
weeks after applying Contans.
Seedling root rot,
basal stem rot
(Rhizoctonia)
azoxystrobin
(Quadris 2.08 SC)
0.4 to 0.8 fl oz per
1000 row feet
00.006 to 0.13lb/1000
row feet
0
4 hr
Apply at planting as a directed spray to the furrow in a band
7 inches wide.
White rust,
Alternaria leaf
spot, Cercospora
leaf spot
azoxystrobin
(Quadris 2.08 SC)
6.2 to 15.4 fl oz/
acre
0.1 to 0.25 lb/acre
0
4 hr
Make no more than 2 sequential applications.
fenamidone
(Reason 500SC)
8.2 oz/acre
0.267 lb/acre
2
0.5
Begin applications as soon as conditions become favorable
for disease development. Applications should be made on
a 5 to 10 day interval. Do not make more than 1 application
of Reason 500 SC before alternating with a fungicide from
a different resistance management group.
fluxapyroxad +
pyraclostrobin
(Priaxor 500 SC)
3
0.5
Maximum of 3 applications. Do not apply to turnip greens
or roots.
Jerusalem Artichoke
Table 10-35. Disease Control Products for Jerusalem Artichoke
Disease
Material
Pythium damping off
Mefenoxam
(Ridomil Gold 4 SL)
fluopicolide
(Presidio 4 SC)
Minimum Days
Formulation
Active Ingredient
Harvest
0.5 to 1 lb/treated acre
1
2
3 to 4 fl oz/acre
0.09 to 0.125 lb/acre
7
0.5
Soil incorporation. See label for row rates.
Do not use more than 2 times sequentially and not
more than 4 times at the low rate or 3 times at the
high rate per acre per season.
Southern blight
azoxystrobin
(Quadris 2.08 SC)
0.4 to 0.8 fl oz/1000 row ft
0.1 to 0.2 oz/1000 row ft
14
4 hr
Rust
azoxystrobin
(Quadris 2.08 SC)
1.6 to 4 oz/acre
14
4 hr
Powdery mildew,
azoxystrobin
(Quadris 2.08 SSC)
2.4 to 4 oz/acre
14
4 hr
White mold
(Sclerotinia basal
stalk rot)
boscalid
(Endura 70 EG)
10 oz/acre
7 oz/acre
30
0.5
2 applications per crop per season at 10 ounces per
acre.
1 to 4 lb/acre
0.05 to 0.2 lb/acre
0
4 hr
when applied prior to planting or transplanting. Do not
apply other fungicides for 3 weeks after applying
Contans.
(Contans WG)
Lettuce
Table 10-36. Disease Control Products for Lettuce
Disease
Material
Bottom rot,
(Rhizoctonia), drop
(Sclerotinia)
Quadris)
boscalid (Endura)
Formulation
Minimum Days
Active Ingredient Harvest
Rentry
0.4 to 0.8 fl oz/ 1,000
row feet
0.006 to 0.013 lb
—
4 hr
Rhizoctonia only. Make in-furrow or banded applications
shortly after plant emergence.
8 to 11 oz/acre
5.6 to 7.7 oz/acre
14
0.5
Suppression only on bottom rot. Apply immediately after
emergence or immediately after transplanting. Make no
520
Minimum Days
Disease
Material
Formulation
Bottom rot,
(Rhizoctonia), drop
(Sclerotinia)
(continued)
(Contans WG)
1 to 4 lb/acre
0.05 to 0.2 lb/acre
0
4 hr
planting or transplanting. Do not apply other fungicides for
3 weeks after applying Contans.
dicloran (Botran)
2 to 5.3 lb/acre
1.5 to 4 lb/acre
14
0.5
Rate depends on timing; 5.3 pounds per crop per season
maximum.
iprodione (Rovral)
1.5 to 2 lb/acre
0.75 to 1 lb/acre
14
1
Tank mix with another fungicide with a different mode of
action.
boscalid (Endura)
8 to 11 oz/acre
5.6 to 7.7 oz/acre
14
0.5
dicloran (Botran)
1.5 to 2.6 lb/acre
1.1 to 2 lb/acre
14
0.5
Apply when disease is anticipated.
fluopicolide (Presidio 4F)
3 to 4 fl oz/acre
0.09 to 0.125 lb/
acre
2
0.5
Tank mix with another fungicide with a different mode of
action.
Mefenoxam
(Ridomil Gold)
1 to 2 pt/trt acre
—
0.5
metalaxyl (MetaStar)
4 to 8 pt/trt acre
0.5 to 1 lb/acre
—
2
12.8 fl oz/100 gal
water
0.6 lb/100 gal
2
0.5
Rates based on rock wool cube saturation in the
greenhouse. See label for use in seed beds, drip system,
and soil drench.
(Actigard 50WG)
0.75 to 1 oz/acre
0.375 to 0.5 oz/
acre
7
0.5
Do not apply prior to thinning or within 5 days after
transplanting. Apply preventatively every 7 to 10 days, not
to exceed 4 applications (4 ounces) per a season.
cymoxanil (Curzate)
3.2 to 5.0 oz/acre
1.92 to 3.0
oz/acre
3
0.5
Use only in combination with a protectant fungicide. Apply
on a 5 to 7 day schedule, not to exceed 30 ounces/acre
per a 12-month period.
Forum)
6.4 oz/acre
3.2 oz/acre
0
0.5
Must be applied as a tank mix with another fungicide
active against downy mildew. Do not make more than two
(Tanos)
8 oz/acre
4 oz/acre
3
0.5
Not for gummy stem blight or leaf lettuce. Do not make
more than 1 application before alternating with a fungicide
that has a different mode of action. Must be tank-mixed
with contact fungicide with a different mode of action.
0.178 to 0.267 lb/
acre
2
0.5
apply more than 24.6 fluid ounces per growing season.
Alternate with fungicide with different resistance
management group.
3 to 4 fl oz/acre
0.09 to 0.125 lb/
acre
2
0.5
8 fl oz/acre
0.13 lb/acre
1
0.5
2 pt/acre
1.5 lb/acre
2
0.5
Do not apply more than 8 pt per growing season; begin
applications before infection, and continue on a 7 to 10
day interval.
Quadris)
0.1 to 0.25 fl oz/
acre
7
4 hr
Use highest rate for downy mildew. Make no more than 2
sequential applications before alternating with fungicides
that have a different mode of action. Apply no more than
2.88 quarts per crop per acre per season.
See label
See label
See
label
See
label
4 to 11 fl oz/ acre
0.26 to 0.72
lb/acre
1
0.5
2 to 5 lb/acre
1.6 to 4 lb/acre
3
1
See label
See label
See
label
See
label
See label. Rates vary depending on the formulation. Spray
at first appearance of disease and continue on a 7 to 10
day interval.
0.1 to 0.25 fl oz/
acre
7
4 hr
Make no more 2 two sequential applications before
action. Apply no more than 2.88 quarts per crop per acre
per season.
(Merivon 500 SC)
4 to 11 fl oz/ acre
0.26 to 0.72
lb/acre
1
0.5
myclobutanil (Rally) 40 WSP
5 oz/acre
0.31 lb/acre
3
1
Botrytis rot
Downy mildew
fenamidone (Reason 500SC)
Downy mildew, leaf
spots
(Merivon 500 SC)
fosetyl-Al (Aliette 80WDG)
mancozeb (various)
Powdery mildew
azoxystrobin
(Amistar, Quadris) 2.08 F
521
Rentry
Preplant incorporated.
Apply preplant incorporated or surface application at
planting.
Banded over the row, preplant incorporated, or injected
with liquid fertilizer.
Spray at first appearance of disease and continue on a 7
to 10 day interval.
Apply when disease first appears and continue on a 14-day
interval. Apply no more than 20 ounces (4 applications) per
season.
Disease
Material
Powdery mildew
(continued)
penthiopyrad
(Fontelis)
Formulation
Minimum Days
Rentry
14 to 24 fl oz/acre
0.18 to 0.31
lb/acre
0
0.5
Begin applications prior to disease development on a 7 to
14 day schedule. Do not exceed 72 fluid ounces of product
per year. Make no more than 2 sequential applications per
season before rotating to another effective product with a
quinoxyfen
(Quintec)
4 to 6 fl oz/acre
1.0 to 1.6 oz/acre
1
0.5
Apply preventatively on a 10 to 14 day interval, making no
more than 4 applications (24 fl oz) per a season.
triflumizole
(Procure) 480 SC
6 to 8 fl oz/acre
3 to 4 oz/acre
0
0.5
Apply when disease first appears and continue on 14-day
See label
See label
See
label
See
label
sulfur (various)
For Melons – See Cucurbits
Okra
Table 10-37. Disease Control Products for Okra
Disease
Material
Minimum Days
Formulation
Active Ingredient
Harvest
11-14 oz/acre
—
0
0.5
Begin applications before disease development and
continue on 7 to 10 day interval. Make no more than 2
consecutive applications before alternating to a
fungicide with a different. Do not apply more than 56
16 to 24 fl oz/acre
—
0
0.5
continue on 7 to 14 day interval. Do not exceed more
than 72 ounces per acre per year.
Alternaria, gray mold,
powdery mildew
Cyprodinil; Fludioxonil
(Switch) 62.5WG
Alternaria, gray mold,
powdery mildew, Septoria
leaf spot, target spot
penthiopyrad
(Fontelis)
Anthracnose, bacterial
leaf spot, leaf spots, pod
spots, powdery mildew
See label
See label
See
label
See
label
Anthracnose, bacterial
leaf spot, leaf spots, pod
spots, powdery mildew
See label
See label
See
label
See
label
Anthracnose, Botrytis leaf
mold, powdery mildew,
Chlorothalonil;
cymoxanil (Ariston)
2-4.4 pints/acre
—
3
0.5
continue on 7 day interval.
Anthracnose, gray leaf
spot, powdery mildew,
Difenoconazole;
azoxystrobin
(Quadris Top)
8-14 fl oz/acre
—
0
0.5
fungicide with a different. Do not apply more than 55
Difenoconazole;
cyprodinil
(Inspire Super)
16-20 fl oz/acre
—
0
0.5
fungicide with a different. Do not apply more that 47
See label
See label
See
label
See
label
tebuconazole
(Orius 3.6F, Uppercut,
Folicur)
4 to 6 fl oz/A
1.5 to 2.3 oz/A
3
0.5
DO NOT apply more than 24 fluid ounces per acre
per season.
0.65 to 0.9 fl oz/A
—
4 hr
Tank mix Micora with a non-Group 40 fungicide and
begin applications prior to disease development. DO
NOT apply more than two applications per crop, or in
consecutive applications.
0
4
Downy mildew
mandipropamid
(Micora)
5.5 to 8 fl oz/A
Powdery mildew
azoxystrobin
(Quadris) 2.08 F
6.2 to 15.4 fl oz/A
Rhizoctonia
seedling rot
0.10 to 0.25 lb/A
3.2 to 8.0 oz/A
1.125 lb/A
0
4
Do not apply more than two sequential applications
before alternating with a fungicide with a different
mode of action. Do not make more than 4
applications of Heritage or other strobilurin fungicide
per acre per season.
See label
See label
See
label
See
label
myclobutanil
(Rally 40WSP)
2.5 to 5 oz/A
0.062 to 0.125 lb/A
0
1
Do not make more than 4 applications per season.
Minimum re-treatment interval: 10 to 14 days.
azoxystrobin
(Quadris) 2.08
F
0.4 to 0.8 fl oz/1,000
row feet
0.006 to 0.013 lb
—
4 hr
Make in-furrow or banded applications shortly after
plant emergence.
522
Onion
Table 10-38. Disease Control Products for Onion
Disease
Material
Minimum Days
Formulation
Active Ingredient
—
ONION (green)
Damping off
(Pythium)
2 to 4 pt/trt acre
0.25 to 0.5 pt/trt acre
Downy mildew
azoxystrobin
0.15 to 0.25 fl oz/
acre
azoxystrobin + chlorothalonil
(Quadris Opti)
dimethomorph
—
2
Preplant incorporated or soil surface spray.
0
4 hr
a fungicide with a different mode of action. Apply no more
than 2.88 quarts per crop per acre per season.
14
0.5
a fungicide with a different mode of action.
3.2 oz/acre
0
0.5
against downy mildew. Do not make more than two
5.5 fl oz/acre
0.178 lb/acre
7
0.5
Alternate with fungicide from different resistance group.
8 fl oz/acre
0.13 lb/acre
7
0.5
14.0 fl oz/acre
0.27 lb/acre
0
12 hr
2 lb/acre
—
21
2
8 to 12 oz/acre
1.6 to 2.4 oz/acre
7
0.5
Make no more than 2 sequential applications and no more
than 6 applications per season.
(Pristine) 38WG
18.5 oz/acre
4 to 7 oz/acre
7
1
For suppression only. Make a maximum of 6 applications
per season.
azoxystrobin
7
4 hr
action. Apply no more than 2.88 quarts per crop per acre
per season.
14
0.5
Do not make more than 2 sequential applications or more
mandipropamid
(Revus) 2.08F
(Zampro)
(Quadris Opti)
Purple blotch
See label for low rates. Also for dry onion.
6.4 oz/acre
fenamidone (Reason) 500 SC
Leaf blight
(Botrytis)
2.4 to 3.7 pt/acre
2
1.6 to 3.2 pt/acre
continue on a 5- to 7- day spray interval.
6.8 oz/acre
4.8 oz/acre
7
0.5
16 to 24 fl oz/acre
0.21 to 0.31 fl oz/
acre
3
12 hr
Begin sprays prior to disease development and continue on
a 7 to 14 day schedule.
See label
See label
See
label
See
label
(Switch) 62.5 WG
11 to 14 oz/acre
6.9 to 8.8 oz/acre
7
0.5
1.5 to 2.7 lb/acre
1.1 to 2 lb/acre
(Inspire Super)
16 to 20 fl oz/acre
14
0.5
7 to 14
0.5
Do not plant rotational crops other than onions or
strawberries for 12 months following the last application.
Make no more than two applications before alternating with
(Pristine) 38 WG
5.5 to 7 oz/acre
7
1
9 or 18 fl oz/acre
0.35 or 0.7 lb/acre
7
0.5
Use lower rate in a tank mix with broad-spectrum fungicide
and higher rate when applied alone. Do not apply more
than 54 fluid ounces per crop.
(Quadris Opti)
1.6 to 3.6 pts/acre
1.1 to 2.5 lb/acre
7
2
Applications should begin prior to disease onset and
subsequent applications should be made on a 7 to 14 day
interval.
7
4 hr
14
0.5
alternating with a fungicide with a different mode of action.
Apply no more than 2.88 quarts per crop per acre per
season.
2.08 F
(Quadris Opti)
boscalid (Endura) 70WG
62.5 WG
(Inspire Super)
1.6 to 3.2 pt/acre
Make a maximum of 6 applications per season.
6.8 oz/acre
4.8 oz/acre
7
0.5
16 to 24 fl oz/acre
0.21 to 0.31 fl oz/
acre
3
12 hr
11 to 14 oz/acre
6.9 to 8.8 oz/acre
7
0.5
7-14
0.5
7
0.5
management group.
16 to 20 fl oz/acre
5.5 to 8.2 fl oz
0.178 lb/acre
523
a 7-14 day schedule.
Disease
Material
Minimum Days
Formulation
Active Ingredient
8 to 12 oz/acre
1.6 to 2.4 oz/acre
7
0.5
(Pristine) 38 WG
4 to 7 oz/acre
7
1
9 or 18 fl oz/acre
0.35 or 0.7lb/acre
7
0.5
Use lower rate in a tank mix with broad spectrum fungicide
4 to 6 fl oz/acre
1.5 to 2 lb/acre
7
0.5
Apply before disease appears when conditions favor purple
blotch development and repeat at 10 to 14 day intervals;
maximum 24 fluid ounces per season.
4 to 7 oz/acre
7
1
—
2
See label for row rates. Also for green onion.
ONION (green) (continued)
Purple blotch
(continued)
Stemphylium
leaf blight
(Pristine) 38 WG
Make a maximum of 6 applications per season.
ONION (dry)
Damping off
(Pythium)
mefenoxam
(Ridomil Gold) 4 SL
metalaxyl (Metatar) 2 E
Downy mildew
azoxystrobin
(Zampro)
fenamidone (Reason)
(Quadris Opti)
—
2
0.15 to 0.25 fl oz/
acre
0
4 hr
a fungicide with a different mode of action. Apply no more
than 2.88 quarts per crop per acre per season.
14.0 fl oz/acre
0.27 lb/acre
0
12 hr
continue on a 5- to 7-day spray interval.
5.5 fl oz/acre
0.178 lb/acre
Use as soon as environmental conditions are favorable.
2.4 to 3.2 pt/acre
7
12 hr
14
0.5
dimethomorph
6.4 oz/acre
3.2 oz/acre
0
0.5
against downy mildew. Do not make more than two
(Tanos)
8.0 oz/acre
0.25 lb/acre
3
0.5
Apply preventively on a 5- to 7-day schedule and do not
rotate with group 11 fungicides.
1.0 pt/acre
0.52 lb/acre
7
2
mandipropamid
(Revus) 2.08 F
8 fl oz/acre
0.13 lb/acre
1
0.5
2.5 lb/trt acre
—
7
2
12 oz/acre
2.4 oz/acre
7
0.5
18.5 oz/acre
4 to 7 oz/acre
7
1
Suppression only. Make no more than 6 applications per
season.
7
4 hr
alternating with fungicides with different mode of action.
season.
14
0.5
(Ridomil Gold MZ)
(Pristine) 38 WG
Leaf blight
(Botrytis)
2 to 4 pt/trt acre
2.08 F
(Quadris Opti)
1.6 to 3.2 pt/acre
Initiate sprays when conditions are favorable for disease or
at disease onset. Spray on a 7- to 10-day schedule.
6.8 oz/acre
4.8 oz/acre
7
0.5
16 to 24 fl oz/acre
0.21 to 0.31 fl oz/
acre
3
12 hr
62.5WG
11 to 14 oz/acre
6.9 to 8.8 oz/acre
7
0.5
1.5 to 2.7 lb/acre
1.1 to 2 lb/acre
14
0.5
(Inspire Super)
16 to 20 fl oz/acre
7 to 14
0.5
at first appearance, 7 to 10 day intervals. Do not apply to
exposed bulbs.
a 7- to 14-day schedule.
See label
See label
See
label
See
label
(Pristine) 38 WG
5.5 to 7 oz/acre
7
1
9 or 18 fl oz/acre
0.35 or 0.7 lb/acre
7
0.5
14 fl oz/acre
2.38 lb/acre
7
0.5
Begin sprays prior to disease onset and spray on a 7- to 14day schedule. Do not rotate with Group 11 fungicides.
1.0 pt/acre
0.52 lb/acre
7
2
at disease onset. Spray on a 7- to 10-day schedule.
(Quadris Top)
524
Disease
Material
Formulation
Active Ingredient
Minimum Days
ONION (dry) (continued)
Neck rot
(Botrytis), purple (Quadris Opti)
blotch
(Alternaria),
downy mildew
14
0.5
16 to 24 fl oz/acre
0.21 to 0.31 fl oz/
acre
3
12 hr
a 7- to 14-day schedule.
See label
See label
See
label
See
label
See label
See label
See
label
See
label
See label. Rates vary depending on the formulation. May
reduce bacterial rots.
2 to 3 lb/acre
1.6 to 2.4 lb/acre
7
0.5
containing copper; will not control neck rot.
1.5 lb/acre
0.75 lb/acre
7
0.5
Apply when conditions are favorable; 14-day intervals.
Rovral is not for downy mildew.
mancozeb (various)
See label
See label
See
label
See
label
2 lb/acre
—
7
2
See label
0.75 to 1 lb/acre
18
1
7
4 hr
alternating with fungicides with a different mode of action.
season.
14
0.5
vinclozolin (Ronilan) 50 DF
Purple blotch,
leaf blight
1.6 to 3.2 pt/acre
azoxystrobin
(Quadris Opti)
1.6 to 3.2 pt/acre
Three treatments minimum.
(Tanos)
8.0 oz/acre
0.25 lb/acre
3
0.5
Apply preventively on a 5 to 7 day schedule and do not
rotate with group 11 fungicides.
6.8 oz/acre
4.8 oz/acre
7
0.5
16 to 24 fl oz/acre
0.21 to 0.31 fl oz/
acre
3
12 hr
11 to 14 oz/acre
6.9 to 8.8 oz/acre
7
0.5
7 to 14
0.5
Alternate with fungicide from different resistance group.
62.5 WG
(Inspire Super)
16 to 20 fl oz/acre
5.5 fl oz/acre
0.178 lb/acre
7
0.5
1.5 lb/acre
50 to 100 gal/acre
0.75 lb/acre
50 to 100 gal/acre
7
0
8 to 12 oz/acre
1.6 to 2.4 oz/acre
7
0.5
(Pristine) 38 WG
4 to 7 oz/acre
7
1
9 or 18 fl oz/acre
0.35 or 0.7 lb/acre
7
0.5
tebuconazole (Folicur) 3.6 F
4 to 6 fl oz/acre
—
7
0.5
See label
18
1
Do not apply more than 12 fluid ounces per acre per
season.
Two treatments Minimum. Effective on purple leaf blotch
when disease pressure is low.
(Quadris Top)
Start 7-day foliar sprays at first appearance of favorable
conditions.
14 fl oz/acre
2.38 lb/acre
7
0.5
Begin sprays prior to disease onset and spray on a 7 to 14
day schedule. Do not rotate with Group 11 fungicides.
1.0 pt/acre
0.52 lb/acre
7
2
at disease onset. Spray on a 7 to 10 day schedule.
Smut
mancozeb (various)
See label
See label
See
label
See
label
Stemphylium
leaf blight
(Inspire Super)
7 to 14
0.5
(Pristine) 38 WG
4 to 7 oz/acre
7
1
14 fl oz/acre
2.38 lb/acre
7
0.5
Begin sprays prior to disease onset and spray on a 7 to 14
day schedule. Do not rotate with Group 11 fungicides.
1.0 pt/acre
0.52 lb/acre
7
2
at disease onset. Spray on a 7 to 10 day schedule.
16 to 24 fl oz/acre
0.21 to 0.31 fl oz/
acre
3
12 hr
(Quadris Opti)
1.6 to 3.2 pt/acre
14
0.5
16 to 24 fl oz/acre
3
12 hr
(Quadris Top)
White rot
(Sclerotium)
16 to 20 fl oz/acre
0.21 to 0.31 fl oz/
acre
525
Disease
Material
Minimum Days
Formulation
Active Ingredient
5.3 lb/acre
4 lb/acre
thiophanate-methyl
(Topsin M) 70 WP
ONION (dry) (continued)
White rot
(Sclerotium)
(continued)
14
0.5
Apply 5-inch band over seed row and incorporate in top 1.5
to 3 inches of soil, 1 to 2 weeks before seeding.
See label
—
—
Spray into open furrow at time of seeding or planting in row.
See label
18
0.5
Three treatments minimum.
Table 10-39. Efficacy of Products for Disease Control in Onion
azoxystobin + difenoconazole (Quadris Top)
Chlorothalonil (various)
Bacterial Streak
(Pseudomones viridiflava)
Black Mold
(Aspergillus niger)
Botrytis Leaf Blight
(B. squamosa)
Botrytis Neck Rot (B. allii)
Damping off (Pythium spp.)
Downy Mildew (P. destructor)
Fusarium Basal Rot
(F. oxysporum)
Onion Smut
(Urocystis colchici)
Center Rot
(Pantoea ananatis)
Pink Root (Phoma terrestris)
Purple Blotch
(Alternaria porri)
Stemphylium Leaf Blight and
Stalk Rot
White Rot
(Sclerotium cepivorum)
amectoctradin + dimethomporph (Zampro)
Product1
Fungicide groupF
40 + 45
0
NC
NC
NC
NC
NC
G
NC
NC
NC
NC
NC
NC
NC
11
7
NC
ND
F
NC
NC
ND
NC
ND
NC
NC
G
G
ND
11+ 3
1
NC
NC
F
NC
NC
ND
NC
NC
NC
NC
G
G
NC
M
14
NC
NC
F
NC
NC
P
NC
NC
NC
NC
F
F
NC
9 + 12
7
NC
NC
G
ND
NC
NC
NC
NC
NC
NC
F
F
NC
dichloropropene + chloropicrin, fumigant
(Telone C-17)
—
—
NC
NC
NC
NC
P
NC
F
NC
NC
F
NC
NC
F
40
0
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
NC
fenamidone (Reason)
11
7
NC
NC
P
NC
NC
G
NC
NC
NC
NC
P
P
NC
11 + 27
3
NC
NC
F
NC
NC
P
NC
NC
NC
NC
F
F
NC
M
1
F
NC
F
NC
NC
F
NC
NC
F
NC
F
NC
NC
29
2
NC
NC
G
NC
NC
G
NC
NC
NC
NC
E
E
NC
fosetyl-Al (Aliette)
33
7
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
iprodione (Rovral)
2
7
NC
NC
E
P
NC
NC
NC
NC
NC
NC
E
F
F
mancozeb (various)
M
7
NC
NC
F
NC
NC
F
NC
E
NC
NC
F
F
NC
famoxadone/cymoxanil (Tanos)
mancozeb + copper (ManKocide)
M+M
7
F
NC
F
NC
NC
F
NC
F
F
NC
F
F
NC
40
7
NC
NC
NC
ND
F
NC
NC
NC
NC
NC
NC
NC
NC
mefenoxam (Ridomil Gold EC)
4
7
NC
NC
NC
NC
F
ND
NC
NC
NC
NC
NC
NC
NC
mefenoxam + chlorothalonil (Ridomil Gold Bravo)
4+M
14
NC
NC
F
NC
P
F
NC
NC
NC
NC
F
F
NC
mefenoxam + copper (Ridomil Gold/ Copper)
4+M
7
F
NC
NC
NC
P
F
NC
NC
F
NC
NC
NC
NC
mefenoxam + mancozeb (Ridomil Gold MZ)
4+M
7
NC
NC
F
NC
P
F
NC
F
NC
NC
F
F
NC
—
—
NC
NC
NC
NC
F
NC
F
NC
NC
E
NC
NC
F
metam sodium, fumigant (Vapam)
11
7
NC
ND
F
NC
NC
F
NC
ND
NC
NC
G
G
ND
11 + 7
7
NC
ND
G
F
NC
F
NC
ND
NC
NC
E
E
ND
pyrimethanil (Scala)
9
7
NC
ND
F
NC
NC
NC
NC
ND
NC
NC
F
F
NC
tebuconazole (Folicur)
3
7
NC
ND
NC
NC
NC
NC
ND
ND
NC
ND
F
F
F
pyraclostrobin + boscalid (Pristine)
1
F
R
526
Parsley
Table 10-40. Disease Control Products for Parsley
Minimum Days
Disease
Material
Formulation
Active Ingredient
Harvest
(Early blight)
azoxystrobin
(Quadris) 2.08 F
2 to 5 oz/acre
0
4 hr
action. Apply no more than 1.88 pounds per crop per acre
per season.
fluxapyroxad +
pyraclostrobin
(Merivon 500 SC)
4 to 11 fl oz/ acre
3
0.5
14 to 24 fl oz
3
0.5
Maximum of 72 fluid ounces per acre per year.
12 to 16 oz/acre
2.4 to 3.2 oz/acre
0
0.5
action. Apply no more than 64 ounces per crop per acre per
season.
0.5 to 1 lb/treated
acre
0
0.5
Apply preplant incorporated or surface application at
planting.
penthiopyrad
(Fontelis)
1.67 F
pyraclostrobin
(Cabrio) EG
Damping off and root
rot (Pythium,
Phytophthora)
mefenoxam
(Ridomil Gold) 4 SL
0.5 to 1 lb/treated
acre
0
2
Banded over the row, preplant incorporated, or injected with
liquid fertilizer.
Powdery mildew,
Septoria leaf spot
(late blight)
azoxystrobin
(Quadris) 2.08 F
2 to 5 oz/acre
0
4 hr
action. Apply no more than 1.88 pound per crop per acre per
season.
(Switch) 62.5 WG
11 to 14 oz/acre
6.9 to 8.8 oz/acre
0
0.5
action for two applications. Apply no more than 56 ounces
per crop per acre per season.
See label
See label
See label
See
label
at first disease appearance, 7- to 10-day intervals.
fluxapyroxad +
pyraclostrobin
(Merivon 500 SC)
4 to 11 fl oz/ acre
3
0.5
penthiopyrad
(Fontelis) 1.67 F
14 to 24 fl oz
3
0.5
pyraclostrobin
(Cabrio) EG
12 to 16 oz/acre
2.4 to 3.2 oz/acre
0
0.5
action. Apply no more than 64 ounces per crop per acre per
season.
Web blight and root
rot (Rhizoctonia)
azoxystrobin
(Quadris) 2.08 F
0.125 to 0.25 oz/
1000 row ft
0.10 to 0.20 oz/1000
row ft
0
4 hr
Apply as banded spray to the lower stems and soil surface.
Make no more than two sequential applications. Apply no
more than 1 .88 pounds per crop per acre per season. Soil
applications are included in this maximum.
White mold
(Switch) 62.5 WG
11 to 14 oz/acre
6.9 to 8.8 oz/acre
0
0.5
action for two applications. Apply no more than 56 ounces
per crop per acre per season. First application at thinning
and second application 2 weeks later.
1.67 F
16 to 30 fl oz
3
0.5
(Contans WG)
1 to 4 lb/acre
0.05 to 0.2 lb/acre
0
4 hr
OMRI listed product. Apply to soil surface and incorporate no
deeper than 2 inches. Works best when applied prior to
planting or transplanting. Do not apply other fungicides for 3
weeks after applying Contans.
527
Table 10-41. Importance of Alternative Management Practices for Disease Control in Parsley
Powdery Pythium damping off
mildew
and root rot
Strategy
Rhizoctonia damping off
and root rot
Root knot
(nematode)
Sclerotinia
Septoria blight
white mold
NC
NC
NC
NC
P
NC
NC
NC
NC
E
E
F
NC
NC
NC
F
NC
NC
NC
E (early)
E (early)
E (late)
NC
Suppressive cover crops
NC
NC
NC
F
NC
NC
Crop rotation with non-host
NC
F
P
P
F
E
Deep plowing
P
NC
F
P
F
G
P
NC
P
P
F
G
P
P
NC
NC
E
G
Flooding (where feasible)
NC
NC
F
G
G
NC
F
P
P
F
NC
P
Hot water seed treatment
NC
NC
NC
NC
NC
E
NC
E
G
NC
F
P
NC
E
G
NC
F
NC
F
NC
F
NC
P
NC
NC
NC
NC
NC
E
NC
NC
NC
P
NC
G
NC
Soil solarization
NC
P
F
F
P
F
P
NC
NC
NC
P
E
NC
NC
P
NC
NC
F
F
NC
NC
F
F
NC
Biofungicide
Resistant/tolerant cultivars
Weed control
G
Pea
Table 10-42. Disease Control Products for Pea
Disease
Material
Minimum Days
Formulation
Active Ingredient
Harvest
0
4 hr
penthiopyrad (Fontelis) 1.67 F
14 to 30 fl oz
0
0.5
Maximum of 72 fluid ounces per acre per crop.
(Priaxor) 500 SC
7
12 hr
Azoxystrobin (Quadris) 2.08 F
0
4 hr
8 to 11 oz/ acre
5.6 to 7.7 oz/acre
7
0.5
Maximum of 2 applications per crop.
14 to 30 fl oz
0
0.5
(Priaxor) 500 SC
7
12 hr
PEA (English)
Anthracnose
Ascochyta leaf
spot and blight
Gray mold
(Botrytis), White
mold (Sclerotinia)
8 to 11 oz/ acre
5.6 to 7.7 oz/acre
7
0.5
14 to 30 fl oz
0
0.5
(Priaxor) 500 SC
7
12 hr
1 to 4 lb/acre
0.05 to 0.2 lb/acre
0
4 hr
Contans.
8 to 11 oz/ acre
5.6 to 7.7 oz/acre
7
0.5
See label
See label
See label
See
label
14 to 30 fl oz
0
0.5
White mold
(Sclerotinia)
(Contans WG)
Powdery mildew
528
Table 10-42. Disease Control Products for Pea
Disease
Material
Minimum Days
Formulation
Active Ingredient
Harvest
7
12 hr
See label
See label
See label
See
label
Spray at first appearance, 10 to 14 day intervals. Do
not use sulfur on wet plants or on hot days (in excess
of 90 degrees F).
—
2
PEA (English) (continued)
Powdery mildew
(continued)
(Priaxor) 500 SC
sulfur (various)
Pythium damping
off
mefenoxam
(Ridomil Gold) 4 EC
Rhizoctonia root
rot
2.08 F
0.4 to 0.8 fl oz/ 1,000
sq ft
0.0006 to 0.13 lb/
1,000 sq ft
—
4 hr
plant emergence.
Rust (Uromyces)
2.08 F
6.2 fl oz/acre
0.10 lb/acre
0
4 hr
1.67 F
14 to 30 fl oz
0
0.5
Maximum of 72 fluid ounces/acre per year.
7
12 hr
Maximum of 16 fluid ounces/acre per crop.
1 to 1.5 lb/acre
0.7 to 1.1 lb/acre
28
0.5
Use no more than 4 lb (2.8 lb a.i.) per acre per year.
Anthracnose, Rust azoxystrobin (Quadris) 2.08 F
2 to 5 oz/acre
0.1 to 0.25 lb/acre
14
(dry)
0
(succulent)
4 hr
alternating with a fungicide with a different mode of
action. Use no more than 1.5 pounds a.i. per acre per
season.
Ascochyta blight,
Gray mold, White
mold
8 to 11 oz/acre
5.6 to 7.7 oz/acre
21
(dried) or
7
(succulent)
0.5
Maximum of 2 applications per season.
Ascochyta blight,
Rust, white mold
prothioconazole
(Proline) 480 SC
5.7 fl oz /acre
2.85 oz /acre
7
0.5
Maximum of 3 applications per year. Use no more
than 17.1 fluid ounces per acre per year.
Downy mildew,
Bacterial blights
See label
See label
See label
See
label
See label
See label
See label
See
label
6 to 9 fl oz/acre
0.1 to 0.15 lb/acre
21
0.5
See label
See label
See label
See
label
—
0.5
Broadcast or banded over the row as a soil spray at
planting or preplant incorporation into the top 2 inches
of soil.
Broadcast or banded over the row as a soil spray at
planting or preplant incorporation into the top 2 inches
of soil.
(Priaxor) 500 SC
Incorporate in soil. See label for row rates.
PEA (Southern)
Anthracnose
thiophanate-methyl
(Topsin M) 70 WP
Downy mildew,
Cercospora,
Anthracnose, Rust
Downy mildew,
Cercospora,
Anthracnose,
Rust, Powdery
mildew
Pyraclostrobin
(Headline) 2.09 EC
Pythium damping
off
mefenoxam
(Ridomil Gold) 4 SL
sulfur (various)
0.5 to 1 pt/ treated acre 0.25 to 0.5 lb/ treated
acre
action. Use no more than 18 fluid ounces per acre per
season.
Spray at first appearance; 7 to 10 day interval.
0.5 to 1 lb/treated
acre
—
2
Rhizoctonia root
rot
0.4 to 0.8 fl oz/1,000
row feet
0.006 to 0.013
lb/1,000 row feet
—
4 hr
Make in-furrow or banded application shortly after
plant emergence.
White mold
(Sclerotinia)
(Contans WG)
1 to 4 lb/acre
0.05 to 0.2 lb/acre
0
4 hr
Contans.
7 oz/acre
3.5 oz/acre
7
0.5
action for 2 applications. Use no more than 28 oz/
acre per year.
fludioxonil
(Cannonball) 50 WP
Pepper
Table 10-43. Disease Control Products for Pepper
Disease
Material
Aphid-transmitted
viruses: PVY, TEV,
WMV, CMV
JMS Stylet-Oil
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
3 qt/100 gal water
—
0
Dry
529
Use in 50 to 200 gallons per acre depending on plant
size. Spray weekly when winged aphids first appear.
Disease
Material
Anthracnose fruit rot
azoxystrobin
(Quadris) Flowable
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
0.1 to 0.25 lb/acre
0
4 hr
Apply at flowering to manage green fruit rot. Limit of
61.5 fluid ounces per acre per season. Make no more
than one application before alternating with fungicides
8 to 14 fl oz/acre
0
0.5
action.
See label
See label
See label
See label
(Ariston)
2 to 2.44 pt/acre
3
0.5
(Tanos)
8 to 10 oz/acre
4 to 5 oz/acre
3
0.5
Make no more than one application before alternating
with a fungicide with a different mode of action. NOTE:
Must tank mix with another fungicide with a
different mode of action (i.e. maneb or copper).
5.5 to 8.2 fl
oz/acre
0.178 to 0.267 lb/
acre
14
0.5
fenamidone
(Reason) 500SC
mancozeb (various)
See label
See label
See label
See label
mancozeb + copper
(ManKocide)
2 to 3 lb/acre
1.2 to 1.8 lb/acre
7
2
8 to 12 oz/acre
1.6 to 2.4 oz/acre
0
4 hr
(Priaxor)
4.0 to 8.0 fl
oz/acre
1.72 to 3.43 fl
oz/acre
0
0.5
RIPE ROT ONLY. Limit of 24 fluid ounces per acre per
season. Make no more than two consecutive
applications before rotating to another effective
24 fl oz/acre
4.89 fl oz/acre
0
0.5
SUPPRESSION ONLY. Limit of 72 fluid ounces per
acre per year. Make no more than two consecutive
trifloxystrobin
(Flint)
3 to 4 oz/acre
1.5 to 2 oz/acre
3
0.5
SUPPRESSION ONLY. Limit of 16 ounces per acre per
year. Make no more than one application before
action.
Bacterial soft rot
(Tanos)
8 to 10 oz/acre
4 to 5 oz/acre
3
0.5
another fungicide with a different mode of action
(i.e maneb or copper).
Bacterial spot (field)
(Actigard) 50 WG
0.33 oz to 0.75 oz/
acre
0.17 to 0.38 oz/
acre
14
0.5
FOR CHILI PEPPERS ONLY EXCECPT IN THE
STATE OF GEORGIA. Begin applications within one
week of transplanting or emergence. Make up to six
weekly, consecutive applications.
See label
See label
See label
See label
8 to 10 oz/acre
4 to 5 oz/acre
3
0.5
pyraclostrobin
(Cabrio) EG 20%
(Tanos)
Bacterial spot
(transplants)
Limit of 39 pounds per acre per season.
Make first application 7 to 10 days after transplanting.
Carefully examine field for disease to deter mine need
for additional applications. If disease is present, make
additional applications at 5-day intervals. Applying
mancozeb with copper significantly enhances bacterial
spot control. Do not spray copper when temperatures
are above 90 degrees F.
mancozeb (various)
See label
See label
See label
See label
mancozeb + copper
(ManKocide)
2 to 3 lb/acre
1.2 to 1.8 lb/acre
7
2
6.0 oz/acre
1.35 oz/acre
3
0.5
Use 6 ounces of product per acre in no less than 30
gallons of water per acre. NOTE: May only be used to
manage bacterial spot in Georgia, Florida, North
Carolina, and South Carolina (Section 2(ee)).
(Agri-Mycin 17, Firewall,
Streptrol)
1 lb/100 gal
0.8 oz/100 gal
—
1
MAY ONLY BE APPLIED TO TRANSPLANTS. Spray
when seedlings are in the 2-leaf stage and continue at
5-day intervals until transplanted into field. NOTE:
Some pathogen strains are resistant to
streptomycin sulfate.
See label
See label
See label
See label
Begin applications when conditions first favor disease
development and repeat at 3 to 10 day intervals if
needed depending on disease severity. Use the higher
rates when conditions favor disease. Do not spray
copper when temperatures are above 90 degrees F.
530
Limit of 39 pound per acre per season.
Disease
Material
Bacterial spot (seed)
Active Ingredient
Harvest
Reentry
sodium hypochlorite (Clorox
5.25%, regular formulation)
1 pt + 4 pt water
—
—
—
Add 1 tablespoon of surfactant (Tween-20 or 80, Silwet)
to improve coverage on the seed.
8 to 14 fl oz/acre
0
0.5
action.
See label
See label
See label
See label
Phytophthora foliar
blight and fruit rot
(Phytophthora
capsici)
mancozeb (various)
See label
See label
See label
See label
mancozeb + copper
(ManKocide)
2 to 3 lb/acre
1.2 to 1.8 lb/acre
7
2
cyazofamid
(Ranman Fungicide)
2.75 fl oz/acre
0.071 lb/acre
0
0.5
Limit of 16.5 fluid ounces per acre per season. Apply to
the base of the plant at transplanting or in the transplant
water. Make no more than three consecutive
applications followed by three consecutive applications
of another effective fungicide with a different mode of
action.
See label
See label
See label
See label
6 fl oz/acre
2.61 fl oz/acre
0
0.5
acre per season. Make no more than two sequential
before alternating with fungicides that have a different
mode of action. NOTE: Must tank mix with another
mancozeb (various)
See label
See label
See label
See label
mancozeb + copper
(ManKocide)
2 to 3 lb/acre
1.2 to 1.8 lb/acre
7
2
SUPPRESSION ONLY. Limit of 39 pound per acre per
season.
2 lb/acre
1.3 lb/acre
7
2
See label for an optimal spray program. Limit of four
applications per crop per year. Do not exceed 0.4
pound a.i. per acre per season of mefenoxam +
metalaxyl (MetaStar).
8 to 10 oz/acre
4 to 5 oz/acre
3
0.5
8.2 fl oz/acre
0.267 lb/ acre
14
0.5
SUPRESSION ONLY. Limit of 24.6 fluid ounces per
growing season. Make no more than one applications
30
0.5
Apply as a soil drench at 1.5 pints per acre. For foliar
applications use 1 pint per acre. Limit of 9 pints per
acre per season.
dimethomorph
(Acrobat, Forum)
mefenoxam + copper hydroxide
(Tanos)
fenamidone
(Reason) 500SC
Phytophthora or
Pythium root rot
(field)
Minimum Days
Formulation
Limit of 39 pound per acre per season.
fluazinam
(Omega) 500F
1 to 1.5 pt/acre
fluopicolide
(Presidio)
3 to 4 fl oz/acre
0.09 to 0.125
lb/acre
2
0.5
more than 2 times sequentially before alternating with
Must be tank-mixed with another mode of action
product.
mandipropamid
(Revus, Micora)
8 fl oz/acre
0.13 lb/acre
1
0.5
acre per season. NOTE: Must tank mix with another
fungicide with a different mode of action (i.e.
copper).
(Zampro)
14 fl oz/acre
0.27 lb/acre
4
0.5
more than two sequential applications before rotating to
another effective fungicide with a different mode of
action.
mefenoxam
(Ridomil Gold, Ultra Flourish)
Check label;
varies between
products
Check label; varies
between products
—
2
MAY ONLY BE APPLIED AT PLANTING. Apply in a
12 to 16 inch band or in 20 to 50 gallons water per acre
in transplant water. Mechanical incorporation or 0.5 to 1
inches irrigation water is needed for movement into root
zone if rain is not expected. After initial application, two
supplemental applications (1 pint per treated acre) can
be applied. NOTE: Strains of Phytophthora capsici
insensitive to Ridomil Gold have been detected in
some North Carolina and Louisiana pepper fields.
4 to 8 pt/treated
acre
0.5 to 1 lb/acre
7
2
Limit of 12 pints per acre per season. Preplant (soil
incorporated), at planting (in water or liquid fertilizer), or
as a basil-directed spray after planting. See label for the
guidelines for supplemental applications.
531
Minimum Days
Disease
Material
Formulation
Active Ingredient
Harvest
Reentry
Powdery mildew
azoxystrobin
(Quadris) Flowable
6 to 15.5 fl oz/
acre
0.1 to 0.25 lb/acre
0
4 hr
8 to 14 fl oz/acre
0
0.5
action.
(Ariston)
2 to 2.44 pt/acre
3
0.5
16 to 24 fl oz/acre
4.89 fl oz/acre
0
0.5
Limit of 72 fluid ounces per acre per year. Make no
action.
(Priaxor)
6.0 to 8.0 fl
oz/acre
2.57 to 3.43 fl
oz/acre
0
0.5
action.
4.0 to 6.0 fl
oz/acre
0.90 to 1.35 fl
oz/acre
3
0.5
Limit of 24 fluid ounces per acre per year. Make no
more than two consecutive applications before
action. NOTE: Under certain environmental
conditions leaf spotting or chlorosis may occur
after application; discontinue use if symptoms
occur.
See label
See label
See label
See label
Apply at first appearance and repeat at 14-day intervals
as needed.
1.5 to 2 oz/acre
0.75 to 1 oz/acre
3
0.5
Limit of 16 ounces per acre per year. Make no more
than one application before alternating with fungicides
fluoxastrobin
2 to 5.7 fl oz/acre
0.81 to 2.30 fl
oz/acre
3
0.5
Do not overhead irrigate for 24 hours following a
spray application.
pyraclostrobin
(Cabrio) EG 20%
12 to 16 oz/acre
1.6 to 2.4 oz/acre
0
4 hr
SUPPRESSION ONLY. Apply at flowering to manage
green fruit rot. Limit of 96 ounces per acre per season.
Make no more than one sequential application before
action.
(Priaxor)
4.0 to 8.0 fl
oz/acre
1.72 to 3.43 fl
oz/acre
0
0.5
acre per season. Make no more than two consecutive
boscald
(Endura)
3.5 oz/acre
2.45 oz/acre
0
0.5
(Inspire Super)
16 to 20 fl oz/acre
0
0.5
Limit of 47 fluid ounces per acre per season.
fluoxastrobin
2 to 5.7 fl oz/acre
0.81 to 2.30 fl
oz/acre
3
0.5
Do not overhead irrigate for 24 hours following a
spray application.
penthiopyrad
(Fontelis)
16 to 24 fl oz/acre
3.26 to 4.89 fl
oz/acre
0
0.5
acre per year. Make no more than two consecutive
8 to 12 oz/acre
1.6 to 2.4 oz/acre
0
4 hr
4.0 to 8.0 fl
oz/acre
1.72 to 3.43 fl
oz/acre
0
0.5
action.
penthiopyrad
(Fontelis)
sulfur (various)
trifloxystrobin
(Flint)
Southern blight
Target spot
(Corynespora
cassiicola)
pyraclostrobin
(Cabrio) EG 20%
(Priaxor)
532
Table 10-44. Relative Effectiveness of Various Chemicals for Pepper Disease Control
Phytophthora Blight
(fruit and foliage)
Pythium Damping off
Southern Blight
(Basal Stem Rot
NC
NC
ND
NC
P
NC
NC
F
G
NC
NC
NC
NC
P
NC
NC
NC
NC
F
G
ND
NC
Preharvest
Interval (Days)
Bacterial Spot
NC
Fungicide
Group1
Anthracnose
(immature fruit rot)
Phytophthora Blight
(root and crown)
Relative Control Rating
11
0
F
NC
M
3
P
NC
cyazofamid (Ranman)
21
0
NC
NC
dimethomorph (Acrobat, Forum)
40
4
NC
dimethomorph + amectoctradin (Zampro)
40 + 45
4
Famoxadone + cymoxanil (Tanos)
Product1
11 + 27
3
P
NC
NC
P
NC
ND
M
Check label
P
F
NC
F
NC
NC
43
2
NC
NC
F
G
NC
NC
Floxystrobin (Evito)
11
3
NC
NC
NC
NC
NC
ND
11 + 7
7
F
NC
NC
NC
NC
ND
Mancozeb2 (various)
M
5
F
P
P
P
NC
NC
40
1
NC
NC
F
G
NC
NC
R
mefenoxam (Ridomil Gold EC, Ultra Flourish)
4
0
NC
NC
E
NA
G
NC
mefenoxamR + copper (Ridomil Gold + copper)
4+M
14
P
F
NA
G
NC
NC
7
0
ND
NC
NC
NC
NC
ND
proamocarb (Previcur Flex)
28
5
NC
NC
NC
NC
F
NC
11
0
G
NC
NC
NC
NC
ND
13
3
NC
P
NC
NC
NC
NC
streptomycin sulfate (Agri-mycin, Stretrol, Firewall)
3
25
Not for field use
NC
F
NC
NC
NC
NC
sulfur (various)
M
0
NC
NC
NC
NC
NC
NC
1
2
3
R
Copper tank-mixed with mancozeb enhances the efficacy against bacterial spot.
Streptomycin may only be used on transplants; not registered for field use.
533
Table 10-45. Importance of Alternative Management Practices for Disease Control in Pepper
Aphid-transmitted viruses (PVX, CMV,
TEV, AMV, PVY)
Bacterial soft rot of fruit
Bacterial spot
Blossom-end rot
Phytophthora blight (root and crown)
Pythium damping off
Root-knot nematode
Southern blight
Tomato Spotted Wilt Virus
Avoid field operations when foliage is wet
F
NC
NC
G
NC
F
P
NC
NC
NC
NC
G
NC
F
G
NC
G
G
P
NC
NC
NC
Change planting date within a season
NC
F (early)
NC
F (early)
NC
NC
NC
P (late)
F (early)
P (early)
Varies
NC
NC
NC
NC
NC
NC
NC
NC
F
NC
NC
Rotation with non-host (2 to 3 years)
G
NC
NC
NC
NC
P
P
NC
F
P
NC
Deep plowing
F
NC
NC
NC
NC
NC
NC
NC
P
F
NC
Prompt destruction of crop residue
F
F
NC
P
NC
P
P
NC
F
P
NC
Promote air movement
P
NC
NC
F
NC
P
P
NC
NC
NC
NC
Use of soil organic amendments
NC
NC
NC
NC
NC
P
P
P
F
P
NC
Application of insecticidal/horticultural oils
NC
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
pH management (soil)
NC
NC
NC
NC
F
NC
NC
NC
F
NC
NC
Plant in well-drained soil / raised beds
NC
NC
NC
NC
NC
NC
G
G
NC
NC
NC
Eliminate standing water / saturated areas
NC
NC
NC
NC
NC
NC
G
G
NC
NC
NC
Postharvest temp control (fruit)
NC
NC
G
NC
NC
NC
NC
NC
NC
NC
NC
Use of reflective mulch
NC
F
NC
NC
NC
NC
NC
NC
NC
NC
G
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Rogue diseased plants / fruit
NC
NC
NC
NC
NC
F
F
NC
NC
NC
NC
Soil solarization
NC
NC
NC
NC
NC
NC
P
NC
F
NC
NC
F
NC
NC
G
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
G
F
F
F
NC
G
NC
G
P
F
NC
NC
NC
P
P
NC
F
NC
P
Strategy
Use of pathogen-free planting stock
Use of resistant cultivars
Weed management
Phytophthora blight (fruit and foliage)
Anthracnose (immature fruit)
Potato, Irish
Table 10-46. Disease Control Products for Potato, Irish
Diseasse
Material
Black and silver
scurf
azoxystrobin (various)
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
See label
See label
see label
see label Apply in furrow at planting according to label directions.
5.47 fl oz/acre
(ground);
2.82 oz/acre (aerial)
0.1 to 0.2 lb/acre
(ground);
0.1 lb/acre (aerial)
7
0.5
Use on a 5 to 7-day interval. Do not apply more than 10.95
ounces per acre per season for ground application and no
more than 8346 ounces per acre per season for aerial
application. Do not make more than 2 applications before
Labeled for silver scurf only.
fluoxastrobin
(Aftershock, Evito 480 SC)
0.16 to 0.24 fl
oz/1,000 ft of row
0.06 to 0.1 fl oz/1,000 ft
7
0.5
Apply in furrow at planting according to label directions. Do
not apply more than 22.8 fluid ounes of product per acre per
year including seed treatment use. Alternate with fungicide
from different resistance management group.
534
Diseasse
Material
Active Ingredient
Harvest
Reentry
0.71 to 1.1 lb/acre
—
0.5
For black scurf only.
0.7 to 1.6 fl oz/1,000 ft
of row
7
0.5
Maximum rate is 24 fluid ounces. Labeled for black scurf
only.
6.2 fl oz/acre
0.7 fl oz/acre
0
0.2
Apply at 7 to 14 day intervals. Both products are registered
for black scurf only.
mancozeb + cymoxanil
(Evolve)
0.75 lb/100 lb seed
—
—
—
2.08 F + 4 F
0.82 fl oz/1,000 ft of
row
—
—
0
Apply as an in-furrow spray in 3 to 5 gallons of water per
acre at planting. Not for Fusarium or Scab.
0.5 lb/100 lb seed
—
—
—
If possible, cut seed pieces, wound-heal for 2 to 3 days at 55
degrees to 65 degrees F at high relative humid ity, then treat
(dust or dip) with fungicide prior to planting. If cut seedpieces
are not wound healed, dust or dip with fungicides and allow
to dry in a cool place before planting. Do not use treated
seedpieces for feed or food.
Black and silver flutolanil (Moncut) 70DF
scurf (continued)
polyoxin
(Ph-D)
(Oso 5%SC)
Fusarium
seedpiece
decay,
Rhizoctonia
stem canker,
Streptomyces
common scab
fludioxonil (Maxim)
mancozeb (various)
See label
See label
See label
maneb (Manex) 4F
0.8 qt/10 gal water
0.02 lb/gal water
—
—
0.7 to 1.6 oz/1,000 ft
of row
0.1 to 0.3 oz/acre
7
0.5
Maximum rate is 24 fluid ounces. Labeled for Rhizoctonia
stem canker only.
6.2 fl oz/acre
0.7 fl oz/acre
0
0.2
Apply at 7 to 14 day intervals. Ph-D is registered for
Rhizoctonia stem canker only.
mancozeb (Tops MZ)
0.75 lb/100 lb seed
—
—
—
mancozeb + cymoxanil
(Evolve)
0.75 lb/100 lb seed
—
—
—
azoxystrobin +
difenoconazole (Quadris
Top)
8 to 14 fl oz/acre
14
0.5
Apply at 7 to 14 day-intervals. Apply no more than 2
sequential applications without alternating with a fungicide
with a different mode of action. Do not apply more than 55.3
lb product per acre per year. Do not apply more than 0.46 lb
a.i./acre /year of difenoconazole-containing products; do not
apply more than 2.0 pounds a.i./acre /year of azoxystrobincontaining products. Labeled for early blight only.
boscalid (Endura)
2.5 to 10 oz/acre
30
0.5
For control of Sclerotinia White mold, use 5.5 to 10 ounce
rate and begin applications prior to row closure or at the
onset of disease. Make a second application 14 days later if
conditions continue to favor disease development.
For Early blight control, use 2.5 to 4.5 ounces rate.
polyoxin
(Ph-D)
Early blight,
white mold
Minimum Days
Formulation
DO NOT apply more than 20.5 ounces of product per acre
per season.
4.0 to 5.47 oz/acre
(ground); 2.82
oz/acre (aerial)
0.1 to 0.2 lb/acre
(ground); 0.1 lb/acre
(aerial)
7
0.5
Use on a 5 to 7-day interval. Do not apply more than 10.95
ounces per acre per season for ground application and no
more than 8346 ounces per acre per season for aerial
application. Do not make more than 2 applications before
fluopyram + pyrimethanil
(Luna Tranquility)
11.2 oz/acre
—
7
0.5
Apply at 7 to 14 day intervals. Do not make more than 2
sequential applications without switching to a fungicide
outside of Group 7 or Group 9.
fluxapyroxad +
pyraclostrobin (Priaxor
Xemium)
4 to 8 oz/acre
—
7
0.5
Apply at 7 to 14 day intervals. Do not apply more than 24
ounces per acre per season including infurrow and foliar
uses. Use 6 to 8 ounces per acre for control of white mold.
0.5 to 1 lb/acre
14
1
For White mold control, apply at first sign of disease or
immediately before row closure. If conditions favor disease
development, apply again 14 to 28 days later. For early
blight, make a maximum of 4 applications, beginning when
disease first appears and then on 10 to 14 day intervals or
as required.
iprodione
(Rovral) 50
1 to 2 lb/acre
metiram + pyraclostrobin
(Cabrio Plus)
2.0 to 2.9 lb/acre
—
3 (FL); 14
—
Apply at 7 to 14 day-intervals. Do not apply more than 17.4
pounds per acre product per season. Do not apply more than
2 sequential applications before alternating with a fungicide
with a different mode of action. Use at 2.9 pounds peracre
for white mold.
10 to 24 oz/acre
0.1 to 0.3 oz/acre
7
0.5
Apply at 7-14 day intervals. Make no more than 2
applications before alternating with a fungicide with a
different mode of action. For white mold control, use at 14 to
24 ounces per acre. Do not exceed 72 ounces per acre per
year. Do not apply more than 11.25 ounces a.i. per acre per
year in total from any combination of seed, soil, or foliar
appliactions.
535
Diseasse
Material
Early blight,
white mold
(continued)
Active Ingredient
Harvest
Reentry
pyraclostrobin (Headline;
Headline SC)
6 to 12 fl oz/acre
3
1
DO NOT exceed more than six foliar applications or 72 total
ounces of product per acre per season. For early blight, use
6- to 9-ounces rate; for white mold, use 6- to 12-ounce rate,
depending on weather conditions and disease pressure. Do
not apply more than one time before alternating with a
pyrimethanil (Scala SC)
7 oz/acre
3.8 oz/acre
7
0.5
ounces per acre per season. For control of early blight only.
thiophanate-methyl
(various)
See label
See label
See label
5.5 to 8 oz/acre
14
See label
See label
See label
azoxystrobin +
chlorothalonil (Quadris
Opti)
1.6 pt/acre
—
14
Late blight, white fluazinam (Omega) 500 F
mold
Early blight, late
blight
Minimum Days
Formulation
See label Rates may vary depending on the product.
1
Begin applications when plants are 6 to 8 inches tall or when
conditions favor disease development. Repeat applications
at 7 to 10 day intervals.
When white mold pressure is low to moderate, use 5.5 fluid
ounces. When conditions favor moderate to high white mold
pressure, increase the rate to 8 fluid ounces. DO NOT apply
more than 3.5 pints per acre during each growing season.
See label Rates may vary depending on the product. Alternate with
protectant fungicide (chlorothalonil or mancozeb). DO NOT
apply more than 1.88 pounds per acre per season.
0.5
pounds a.i. per acre per year of azoxystrobin; do not apply
more than 11.25 pounds a.i. per acre per year of
chlorothalonil.
See label
See label
See label
chlorothalonil + zoxamide
(Zing!)
32 to 34 fl oz/acre
—
7
0.5
sequential applications before alternating with a fungicide
that has a different mode of action. Do not make more than 8
applications or apply more than 1.52 pounds zoxamide and
8.88 lb chlorothalonil per acre per season.
cymoxanil + famoxadone
(Tanos)
6 to 8 fl oz/acre
—
14
0.5
Use rate of 6 fluid ounces only for early blight. Do not apply
more than 48 fluid ounces per acre per crop season and no
more than 72 fluid ounces per acre per 12 months. Do not
make more than one application before alternating with a
fungicide with a different mode of action. Do not make more
than 6 applications of any fungicide in Group 11 per cropping
cycle.
See label
See label
See label
(Tanos)
6 to 8 oz/acre
—
14
1
fenamidone (Reason) 500
SC
0.178 to 0.267 lb/acre
14
0.5
apply more than 24.6 fluid ounces per growing season.
management group.
fluoxastrobin (Aftershock,
Evito) 480 SC
2 to 3.8 fl oz/acre
7
0.5
development, on 7 to 10 day intervals. Do not apply more
than once before alternating with fungicides that have a
different mode of action. Do not apply more than 22.8 fluid
ounces per acre per season. For late blight, apply at full label
rate.
4 to 8 fl oz/acre
—
7
0.5
ounces per acre per season, including infurrow and foliar
uses.
See label
See label
See label
1.2-2.0 lb/acre
—
7 (FL):
14 (NC,
VA)
1
Do not apply more than 18.0 pounds per acre per crop.
Product is only registered in FL, NC, and VA in the
southeastern US.
mancozeb + zoxamide
(Gavel 75DF)
1.5 to 2.0 lb/acre
—
14
2
Apply at 5 to 10 day intervals except shorten to 5 to 7 day
intervals when late blight is present. Do not make more than
6 applications or apply more than 12 pounds (8.0 pounds
mancozeb and 1.0 zoxamide) per acre per season crop.
mandipropamid +
difenoconazole
(Revus Top)
5.5 to 7 oz/acre
—
1
0.5
0.8 to 1.6 qt/acre
0.8 to 1.6 lb/acre
14
1
fluxapyroxad +
pyraclostrobin (Priaxor)
mancozeb (various)
mancozeb + chlorothalonil
(Elixir)
maneb (Manex) 4F
536
development or when disease is present in area. Should be
tank mixed with a protectant fungicide (chlorothalonil or
mancozeb). DO NOT apply more than 48 ounces per acre
per season.
when conditions favor disease but before symptoms appear.
Continue applications on a 5 to 10 day schedule depending
on disease pressure. Under high disease pressure, shorten
spray interval and use maximum rate.
than twice before alternating with fungicides that have a
different mode of action. Do not apply more than 28 fluid
ounces acre per season.
Diseasse
Material
Early blight, late
blight
(continued)
mefenoxam+ chlorothalonil
(Ridomil Gold/Bravo,
Flouronil)
76.5 WP
mefenoxam+ copper
hydroxide (Ridomil Gold/
Copper)
mefenoxam+ mancozeb
(Ridomil Gold MZ)
Harvest
Reentry
2 lb/acre
—
14
2
2 lb/acre
—
14
2
2.5 lb/acre
—
14
2
Do not exceed more than three to four foliar applications.
See label for more details.
1.5 to 2 lb/acre
1.2 to 1.6 lb/acre
14
1
(Cabrio Plus)
2.0 to 2.9 lb/acre
1.2 to 1.74 lb/acre
3 (FL); 14
1
6.2 fl oz/acre
0.7 fl oz/acre
0
0.2
Apply at 7 to 14 day intervals.
0.7 to 1.2 pt/acre
0.5 to 0.9 lb/acre
14
0.5
Do not apply more than 6 pints per growing season. Use
lower rates when conditions favor disease but disease is not
present. Increase rate as risk of disease development
increases.
6 to 12 oz/acre
1.4 to 2.8 oz/acre
3
1
DO NOT exceed more than six foliar applications or 72 total
ounces of product per acre per season. For early blight, use
6- to 9-ounce rate; for late blight, use 6- to 12-ounce rate,
depending on weather conditions and disease pressure.
—
7
12 hr
7 fl oz/acre
0.27 lb/acre
7
0.5
Early blight only. Use only in a tank mix with another Early
blight fungicide. Do not apply more than 35 fluid ounces per
crop.
trifloxystrobin (Gem) 500
SC
6 to 8 oz/acre
1.5 to 2 oz/acre
7
0.5
Begin applications preventively and continue as needed on a
7 to 10 day schedule. Alternate every other application with a
protectant fungicide. DO NOT apply more than 48 ounces
per acre per season.
triphenyltin hydroxide
(Super Tin) 80 WP
2.5 to 3.75 oz/acre
0.2 to 0.3 lb/acre
21
1
Add to 3 to 15 gallons of water depending on method of
application. Do not exceed 15 ounces of product per acre
per season.
thiabendazole
(Mertect 340F)
0.2 oz/100 lb seed
—
—
—
Mist whole, unwashed tubers with fungicide solution to
ensure proper coverage. Tubers may be treated again after
storage and before shipping if needed. Do not apply to cut
seed pieces. Some isolates of Fusarium are resistant to
Mertect.
ametoctradin +
11 to 14 fl oz/acre
—
4
0.5
Apply at 5 to 7 day intervals. Do not exceed 42 oz per acre
per season. Do not make more than 2 sequential
appliactions without alternating to a fungicide with a different
mode of action and no more than 3 total applications in a
season.
cyazofamid (Ranman) 400
SC
0.036 to 0.071 lb/acre
7
0.5
Late blight only. Do not apply more than 10 sprays per
crop. Make no more than 3 consecutive applications followed
by 3 applications of fungicides from a different resistance
management group.
cymoxanil (Curzate) 60 DF
3.2 oz/acre
0.1 lb/acre
14
1
Use Curzate or Acrobat in combination with a protectant
fungicide (chlorothalonil, mancozeb, metiram, or triphenyltin
hydroxide). DO NOT exceed 32 ounces per acre per season.
4 to 6.4 oz/acre
2 to 3.2 oz/acre
4
0.5
(Quadris Ridomil Gold)
2.08 F + 4 F
0.82 fl oz/1,000 fl of
row
—
—
0
cyazofamid (Ranman) 400
SC
0.036 to 0.071 lb/acre
7
0.5
0.42 fl oz/1,000 ft of
row
0.84 fl oz/1,000 ft of
row
0.013 lb/1,000 ft of row
0.21 fl oz/1,000 ft of
row
14
2
See labels for maximum amount of product allowable per
season. PHI is based on foliar application for Ultraflourish.
2 lb/acre
—
14
2
Apply at flowering and then continue on a
14-day interval. Do not exceed more than four applications
per crop.
2 lb/acre
—
14
2
Apply at 14-day intervals for up to 3 applications. Alternate
with a protectant fungicide.
propamocarb
hydrochloride
(Previcur Flex) 6 F
pyraclostrobin
(Headline, Headline SC)
2.08 F
pyraclostrobin +
fluxapyroxad (Priaxor)
Forum) 50 WP
Pink rot,
Pythium leak,
tuber rot
Active Ingredient
metiram (Polyram) 80 DF
polyoxin
(Ph-D)
(Oso 5%SC)
Late blight
Minimum Days
Formulation
mefenoxam
(Ridomil Gold SL)
(Ultraflourish)
mefenoxam +
chlorothalonil (Ridomil
Gold/Bravo, Flouronil)
76.5 WP
mefenoxam + copper
hydroxide (Ridomil Gold/
Copper)
537
with a different mode of action. Use at 2.9 pounds per acre
for late blight.
Use preventively. Offers some suppression of late blight.
For late blight control only. Apply on a 5 to 10 day schedule
depending on disease pressure. Check label for rotational
crop guidelines. Use in combination with a protectant
fungicide. Do not exceed 30 ounces per acre per season.
DO NOT tank mix with metalaxyl or mefenoxam.
Apply as an in-furrow spray in 3 to 15 gallons of water per
acre at planting.
For pink rot and Pythium leak, apply at the high rate. Do not
apply more than 10 sprays per crop. Make no more than 3
consecutive applications followed by 3 applications from a
different resistance management group.
Diseasse
Material
Pink rot,
Pythium leak,
tuber rot
(continued)
(Ridomil Gold MZ)
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
2.5 lb/acre
—
14
2
Apply at 14-day intervals for up to 3 applications.
4 to 8 pt/trt acre
0.5 to 1 lb/acre
7
2
Preplant incorporated or soil surface spray
mono- and dipotassium
salts of phosphorous acid
(Alude)
1.25 qt/acre in 90-375
gal water
1.62 lb/acre
0
0.16
See label
See label
See label
1.6 pt/acre
—
14
0.5
pounds a.i./acre/year of azoxystrobin; do not apply more than
11.25 pounds a.i./acre /year of chlorothalonil. Do not make
more than 1 application before alternating with a fungicide
with a different mode of action. Do not apply this product or
other fungicides in Group 11 more than 6 times in a season.
8 to 14 fl oz/acre
—
14
0.5
Apply at 7 to 14 day-intervals. Apply no more than 2
sequential applications without alternating with a fungicide
with a different mode of action. Do not apply more than 55.3
pounds product per acre per year. Do not apply more than
0.46 pound a.i./acre /year of difenoconazole-containing
products; do not apply more than 2.0 pounds a.i./acre /year
of azoxystrobin-containing products.
4.3 pt/acre
—
7
2
Apply when disease first appears; then repeat as needed.
Check label for application intervals. Avoid applying sulfur on
days over 90 degrees F.
fluopyram + pyrimethanil
(Luna Tranquility)
11.2 oz/acre
—
7
0.5
sequential applications without switching to a fungicide
outside of Group 7 or Group 9.
fluxapyroxad +
pyraclostrobin (Priaxor
Xemium)
4 to 8 oz/acre
—
7
0.5
ounces per acre per season including infurrow and foliar
uses.
5.5 to 7 fl oz/acre
—
14
0.5
than twice before alternating with fungicides that have a
different mode of action. Do not apply more than 28 fluid
(Cabrio Plus)
2.9 lb/acre
—
3 (FL); 14
1
10 to 24 oz/acre
0.1 to 0.3 oz/acre
7
0.5
Apply at 7-14 day intervals. Make no more than 2
different mode of action. Do not exceed 72 ounces per acre
per year. Do not apply more than 11.25 ounces a.i. per acre
per year in total from any combination of seed, soil, or foliar
appliactions.
pyraclostrobin (Headline;
Headline SC)
6 to 12 fl oz/acre
3
1
DO NOT exceed six foliar applications or 72 total ounces of
product per acre per season. Do not apply more than one
time before alternating with a fungicide with a different mode
of action.
See label
See label
See label
Powdery mildew azoxystrobin (various)
azoxystrobin +
chlorothalonil
(Quadris Opti)
azoxystrobin +
difenoconazole (Quadris
Top)
chlorothalonil + sulfur
(Bravo S)
mandipropamid +
difenoconazole
(Revus Top)
sulfur (various)
For Pumpkin, Winter Squash, and Summer Squash – See Cucurbits
Radish – See Root Vegetables
Scallion - See Onion, Green Shallot – See Onion, Dry
538
Apply at 5-14 days depending on disease incidence.
See label See label. Rates may vary depending on the product. Apply
in furrow at planting according to label direction. Do not
apply more than one application without alternating away
from fungicides in Group 11.
Root Vegetables (Except Sugar Beet) Beet, Carrot, Parsnip, Radish, Turnip
Table 10-47. Disease Control Products for Root Vegetables (Except Sugar Beet) — Beet (red, garden or table), Carrot, Parsnip,
Radish, Turnip – Harvested for roots only
Minimum Days
Disease
Material
Formulation
Active Ingredient
Alternaria blight,
black crown rot
iprodione (Rovral) 4 F
1 to 2 pt/acre
0.5 to 1 lb/acre
0
1
For use on carrot s only. Make no more than 4 applications
per season.
Alternaria leaf
blight,
Cercospora leaf
spot
0
4 hr
No more than 1 application before alternating with a
fungicide with a different mode of action. Make no more than
123 fluid ounces per acre per year.
(Quilt) 1.66SC
14 fl oz
0.18 lb/acre
14
0.5
For use on carrot s only. No more than 1 application before
alternating with a non-Group11 fungicide. Make no more
than 55 fluid ounces per acre per year.
4.5 oz/acre
0.2 lb/acre
0
0.5
For use on carrot s only. Not for Cercospora. Do not make
more than 2 consecutive applications or more than 5
See label
See label
See
label
See
label
(Switch) 62.5 WG
11 to 14 oz/acre
6.9 to 8.7 oz/acre
7
0.5
See label
See label
See
label
See
label
16 to 30 fl oz/acre
3.26 to 6.78 fl oz/
acre
0
0.5
Make no more than 2 consecutive applications before
Apply no more than 61 fluid ounces/acre per year.
boscalid (Endura) 70WG
penthiopyrad
(Fontelis) 1.67 SC
Not for Cercospora. Apply when disease first appears, and
continue on 7 to 10 day intervals if conditions remain
favorable for disease development. Do not exceed 56
ounces of product per acre per year.
8 to 12 oz/acre
1.6 to 2.4 oz/acre
0
0.5
Alternate with a fungicide with a different mode of action.
3 to 4 oz/acre
0
0.5
FOR USE ON CARROTS ONLY. Make no more than 2
consecutive applications before alternating with a different
mode of action. Use no more than 63 ounces or make no
trifloxystrobin (Flint) 50 WDG
2 to 3 oz/acre
For radish:
2 to 4 oz/acre
1 to 1.5 oz/acre
For radish:
1 to 2 oz/acre
7
0.5
Make no more than 1 application before alternating with a
fungicide with another mode of action.
trifloxystrobin (Gem) 500 SC
0.81 to 1.24 fl oz/
acre
3 to 4 fl oz/acre
0.084 to 0.112 lb/
acre
14
0.5
FOR USE ON GARDEN BEETS AND CARROTS ONLY.
Use higher rate for carrots. Make no more than 2
consecutive applications before alternating with a fungicide
with a different mode of action. Apply no more than 16 fluid
4 to 7.2 fl oz/acre
0.113 to 0.203 lb/
acre
7
0.5
FOR USE ON TURNIP ONLY. Repeat applications at 12 to
14 day intervals. Apply no more than 28 fluid ounces/
acre/season.
See label
See label
See
label
See
label
or dust at first appearance, 7 to 10 day intervals.
0.5 to 1 oz/acre
0.25 to 0.5 oz/acre
7
0.5
See label
See label
See
label
See
label
or dust at first appearance, 7- t o 10-day intervals.
Apply as a preplant application to soil and incorporate into
top 2 inches of soil. Broadcast or band.
propiconazole (Tilt) 3.6 F
tebuconazole (Folicur) 3.6EC
Downy mildew
8 to 10.5 oz/acre
(Pristine) 38 WG
Cercospora leaf
spot or blight,
powdery mildew
Actigard 50WG
FOR RADISH, RUTABAGA, AND TURNIP ONLY. Make
up to 4 applications at 7-day intervals.
Leaf spots
Phytophthora
basal stem rot
1 to 2 pt/trt acre
—
2
4 to 8 pt/trt acre
0.5 to 1 lb/trt/acre
—
2
—
2
Apply preplant incorporated into top 2 inches, as a soil spray
at planting, or in drip irrigation at planting.
4 to 8 pt/trt acre
—
2
Apply preplant incorporated into top 2 inches of soil or as a
post-plant soil spray at planting followed by 0.5 to 1 inch of
water.
8.2 fl oz/acre
0.27 lb/acre
14
0.5
mefenoxam-containing fungicide. Apply no more than 24.6
fluid ounces per growing season. Applied with sprayer or in
sprinkler irrigation.
cyazofamid (Ranman) 400 SC
6 fl oz/acre
0.156 lb/acre
14
0.5
FOR USE ON CARROTS ONLY. May be applied preplant
incorporated, as a pre-emergent surface band, or in sprinkler
irrigation. Applications can be repeated at 14- day intervals,
but must alternate with a Pythium fungicide with a different
mode of action.
3 to 4 fl oz/acre
0.09 to 0.125 lb/acre
7
0.5
Can be applied with a sprayer or in sprinkler irrigation.
Regardless of method, must be applied in combination with a
fungicide with a different mode of action and labeled for that
method. No more than 2 consecutive applications before
alternating with a Pythium fungicide with a different mode of
action. Maximum of 12 fluid ounces per acre per year. For
carrots only, may also be applied preplant incorporated.
Pythium root rot, mefenoxam
root dieback,
(Ridomil Gold) 4 SL
cavity spot
(Ultra Flourish) 2 EC
fluopicolide (Presidio) 4 F
1 to 2 pt/trt acre
2 to 4 pt/trt acre
539
Table 10-47. Disease Control Products for Root Vegetables (Except Sugar Beet) — Beet (red, garden or table), Carrot, Parsnip,
Radish, Turnip – Harvested for roots only
Disease
Material
Active Ingredient
0
4 hr
fungicide with a different mode of action. Apply no more than
123 fluid ounces per acre per season.
14 fl oz
0.18 lb/acre
14
0.5
For use on carrot s only. No more than 1 application before
alternating with a non-Group11 fungicide. Apply no more
than 55 fluid ounces per acre per year.
See label
0.2 lb/acre
0
0.5
For use on carrot s only. Make more than 2 consecutive
different mode of action. Make no more than 5 applications
per season.
(Switch) 62.5 WG
11 to 14 oz/acre
0.430 to 0.547 lb/acre
7
0.5
Make no more than 2 applications per crop. For radish, apply
no more than 28 ounces per crop or 56 ounces per plot of
land per year.
(Merivon) 4.18 SC
4 to 5.5 fl oz/acre
7
0.5
Do not make more than 2 consecutive applications before
rotating to a labeled non-Group 7 or non-Group 11 fungicide.
Powdery mildew azoxystrobin (Quadris) 2.08 F
(Quilt) 1.66SC
pyraclostrobin (Cabrio) 20 EG
8 to 12 oz/acre
1.6 to 2.4 oz/acre
0
0.5
8 to 10.5 oz/acre
3 to 4 oz/acre
0
0.5
FOR USE ON CARROTS ONLY. Make no more than 2
consecutive applications before alternating with a different
mode of action. Use no more than 63 ounces or make no
penthiopyrad (Fontelis) 1.67 SC
16 to 30 fl oz/acre
0
0.5
Apply no more than 61 fluid ounces per acre per year.
See label
See label
See
label
See
label
See label. Rates vary depending on the formulation. Spray at
first appearance. Avoid applying on days over 90 degrees F.
0.4 to 0.8 fl oz/1000
row ft
0.0065 to 0.013
lb/1000 row ft
0
4 hr
Make one application, applied either in-furrow at planting, in
a 7-inch band over the row prior to or shortly after planting,
or in drip irrigation.
16 to 30 fl oz/acre
0
0.5
See label
See label
See
label
See
label
7.8 oz
0.34 lb/acre
0
0.5
FOR USE ON CARROTS ONLY. No more than 2
different mode of action. Limit of 3 applications per season.
16 to 30 fl oz/acre
0
0.5
41 fl oz/100 gal
1.31 lb/100 gal
—
0.5
Dip harvested roots 5 to 10 seconds. Do not rinse.
10.8 to 17.1 gal/acre
13 to 20.5 gal/acre
107 to 169 lb/acre
139 to 220 lb/acre
—
5
Fumigate soil in-the-row 3 to 6 weeks before seeding. Rate
is based on soil type; see label for in-row rates.
8 to 10.5 oz/acre
3 to 4 oz/acre
0
0.5
FOR USE ON CARROTS ONLY. Suppression only. Make
no more than 6 applications per season.
0.4 to 0.8 fl oz/1000
row ft
0.0065 to 0.013
lb/1000 row ft
0
4 hr
Make one application, applied either in-furrow at planting, in
a 7-inch band over the row prior to or shortly after planting,
or in drip irrigation.
16 to 30 fl oz/acre
0
0.5
0.1 to 0.25 lb/acre
0
4 hr
fungicide with a different mode of action. Apply no more than
123 fl oz per acre per season.
8 to 16 oz/acre
1.6 to 3.2 oz/acre
0
0.5
Apply no more than 48 ounces/acre/season.
2 lb/acre
—
7
1
Rhizoctonia root
canker
Rust
sulfur (various)
Sclerotinia,
Botrytis
(postharvest)
Southern blight
thiabendazole
(Mertect 340-F) 4.1 F
dichloropropene (Telone)
C-17
C-35
(Pristine) 38 WG
azoxystrobin
(Quadris) 2.08 F
penthiopyrad
(Fontelis) 1.67 SC
White rust
(Pristine) 38 WG
sulfur (various)
Sclerotinia,
Botrytis
Minimum Days
Formulation
azoxystrobin
(Quadris) 2.08 F
(Ridomil Gold/ Copper)
540
Spray leaves. Use with preplant Ridomil 2E soil applications.
Make 2 to 4 applications if needed on 14-day intervals.
Table 10-48. Importance of Alternative Management Practices for Disease Control in Carrot
Alternaria blight
Cercospora blight
Powdery mildew
Pythium cavity
spot
Pythium damping
off
Southern blight
Rhizoctonia cavity
spot
Sclerotinia
postharvest
Botrytis
postharvest
Bacterial leaf
blight
Root-knot
nematode
P
P
NC
NC
NC
NC
NC
NC
NC
F
NC
F
F
NC
NC
NC
NC
NC
F
NC
F
NC
P
P
NC
F
F
F
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
F
Strategy
Crop rotation
F
F
NC
P
P
P
P
P
NC
F
P
Deep plowing
G
G
P
NC
NC
F
F
F
P
G
NC
E
E
P
NC
NC
NC
P
NC
P
E
P
F
F
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
G
G
P
F
F
NC
NC
NC
NC
NC
NC
F
F
NC
F
P
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
E
E
NC
NC
NC
NC
NC
NC
NC
NC
NC
F
G
NC
NC
Destroy volunteer carrots
F
F
P
NC
NC
NC
NC
NC
NC
NC
NC
E
E
NC
NC
NC
NC
NC
NC
NC
E
NC
Resistant cultivars
G
G
F
NC
NC
NC
NC
NC
NC
NC
NC
Spinach
Table 10-49. Disease Control Products for Spinach
Disease
Material
Formulation
Damping off
(Pythium)
mefenoxam
(Ridomil Gold) 4 SL
(Ultra Flourish) 2 EC
1 to 2 pt/trt acre
2 to 4 pt/trt acre
Minimum Days
Active Ingredients
Harvest
21
2
Broadcast or banded over the row as a soil spray or
preplant incorporation into the top 2 inches of soil.
4 to 8 pt/trt acre
1 to 2 lb/trt acre
21
2
Broadcast or banded over the row as a soil spray or
preplant incorporation into the top 2 inches of soil.
Apply as an in furrow spray in 5 gallons of water per acre
prior to covering seed. Make only 1 application per season.
Seedling blight
(Rhizoctonia),
damping off
(Pythium)
(Uniform)
0.34 fl oz/ 1000 ft of
row
0.13 fl oz/ 1000 ft of
row
—
0
Downy mildew
cymoxanil (Curzate) 60DF
5 oz /acre
0.1875 lb/acre
1
0.5
Apply with a protectant fungicide. Apply no more than 30
ounces per acre in a 12-month period.
mandipropamid (Revus) 2.08 F
8 fl oz/acre
0.13 lb/acre
1
4 hr
Apply no more than 32 fluid ounces/acre/season.
12 to 16 oz/acre
0.15 to 0.2 lb/acre
0
0.5
Make no more than 2 consecutive applications before alternating with a fungicide with a different mode of action.
Apply no more than 64 ounces per acre per growing
season.
0.5 to 0.75 oz/acre
7
0.5
Do not apply to young seedlings or plants stressed due to
drought, excessive moisture, cold weather, or herbicide
injury.
(Tanos) DF
8 to 10 oz/acre
—
1
0.5
Must be tank-mixed with a contact downy mildew fungicide
with a different mode of action. Make no more than 1
different mode of action. Apply no more than 84
ounces/acre per cropping season.
fluopicolide (Presidio) 4F
3 to 4 fl oz/acre
0.09 to 0.125 lb/acre
2
0.5
Downy mildew,
white rust
(Actigard) 50 WG
541
Table 10-49. Disease Control Products for Spinach
Disease
Material
Downy mildew,
white rust
(continued)
(Merivon) 4.18 SC
Minimum Days
Formulation
Active Ingredients
Harvest
4 to 11 fl oz/acre
1
0.5
Do not tank-mix Merivon with any pesticides,
adjuvants, fertilizers, nutrients, or any other additives.
Do not make more than 2 consecutive applications before
rotating to a labeled non-Group 7 or non-Group 11
fungicide. Make no more than 3 applications per season.
See label
See label
See label
See
label
See label. Rates vary depending on the formulation. Some
formulations of copper may cause leaf flecking.
fosetly-Al (Aliette) 80 WDG
2 to 5 lb/acre
1.4 to 4 lb/acre
3
0.5
mefenoxam (Ridomil) 4 SL
0.25 pt/acre
0.125 lb/acre
21
2
Apply preplant as above for damping off. Shank in 21 days
after planting or after first cutting. Another application may
be shanked in after the next cutting. A total of 2 shank
applications may be made on a 21-day interval. Do not use
post-emergence if a preplant application was not made.
2.5 lb/acre
—
21
2
Spray to foliage. Use with preplant Ridomil Gold soil
application.
1 pt/trt acre
0.125 lb/acre
21
2
Shank in 21 days after planting. Apply no more than 2
shanked applications on 21-day intervals.
cyazofamid (Ranman) 400 SC
0.054 to 0.071 lb/
acre
0
0.5
No more than 5 applications per crop. No more than 3
consecutive applications followed by at least three
applications of a fungicide with a different mode of action.
Do not apply more than 13.75 fluid ounces per acre per
crop per growing season
2
0.5
than 24.6 fluid ounces/acre per growing season.
8 to 12 oz/acre
0.1 to 0.15 lb/acre
0
0.5
season.
Downy mildew,
leaf spot
12 to 16 oz/acre
0.15 to 0.2 lb/acre
0
0.5
season.
Downy mildew,
leaf spot, white
rust
Leaf spot, white
rust
See label
See label
See label
See
label
See label. Rates vary depending on the formulation. Some
formulations of copper may cause flecking on the leaves.
0
4 hr
Apply no more than 92.3 fluid ounces per acre per season.
Leaf spots
penthiopyrad (Fontelis) SC
14 to 24 fl oz/acre
2.86 to 4.90 fl oz/
acre
3
0.5
White rust
containing copper.
For Winter Squash and Summer Squash – See Cucurbits
Sweetpotato
Table 10-50. Disease Control Products for Sweetpotato
Disease
Material
Black rot (Ceratocystis
fimbriata), scurf
(Monilochaetes
infuscans), and foot rot
thiabendazole
(Mertect 340 F)
Minimum Days
Formulation
Active Ingredient
Harvest
Reentry
107 fl oz/100 gal
4 lb/100 gal
—
—
Circular spot, Sclerotial azoxystrobin
blight, Rhizoctonia
(Quadris) 2.08 F
stem canker, Pythium
root rot
0.4 to 0.8 fl oz/1,000 row
feet
0.006 to 0.013 lb
—
4 hr
transplanting.
Seed-borne and
soilborne fungi that
cause decay, damping
off or seedling blight
azoxystrobin
(Dynasty) 0.83 F
0.19 to 0.38 fl oz per 100
lb of propagating roots
0.009 to 0.036 fl oz per
100 lb of propagating
roots
—
4 hr
Apply uniformly to seed roots as a water-based slurry.
fludioxonil
(Maxim 4 FS)
0.08 to 0.16 fl oz per 100
lb of propagating roots
0.032 to 0.064 fl oz per
100 lb of propagating
roots
—
0.5
Apply uniformly to seed roots as a water-based slurry.
542
Dip seed roots 1 to 2 minutes and plant immediately;
not for Sclerotial blight.
Table 10-50. Disease Control Products for Sweetpotato
Disease
Material
Formulation
cyazofamid
(Ranman 400 SC)
6/1 fl oz/acre
Foliar diseases
(Alternaria and
powdery mildew)
Minimum Days
Harvest
Reentry
7
0.5
Apply at planting. Refer to label for details.
mefenoxam
(Ridomil Gold) 4 SL
0.5 to 1 lb/treated acre
—
2
Incorporate in soil. See label for row rate.
metalaxyl
(MetaStar) 2 E
0.5 to 1 lb/acre
7
2
azoxystrobin +
difenoconazole
(Quadris Top)
8 to 14 fl oz/ acre
14
0.5
Begin foliar applications prior to disease and continue
on a 7- to 14-day interval.
cyprodinil +
fludioxonil (Switch
62.5WG)
11 to 14 oz/acre
7
0.5
fenamidone
(Reason 500 SC)
14
0.5
7 fl oz/acre
0.27 lb/acre
7
0.5
0.1 to 0.25 lb/acre
0
4 hr
For soilborne disease control refer to label. Begin
foliar applications prior to disease and continue on a
5- to 7-day interval.
10
0.5
pyrimethanil
(Scala SC)
Foliar (Alternaria) and
soilborne (Rhizoctonia,
Sclerotinia) fungal
diseases
Active Ingredient
azoxystrobin (Aframe,
various)
boscalid (Endura)
2.5 to 10 oz/acre
fluoxastrobin
(Aftershock)
2 to 3.8 fl oz/acre
7
0.5
2.5 to 4 oz/acre
0.078 to 0.125 lb/acre
1
0.5
7
0.5
0
4 hr
Foliar spray at 5 to 14 day intervals depending on
disease incidence.
metconazole (Quash)
penthiopyrad
(Vertisan)
Mottle necrosis
(Pythium postharvest)
potassium phosphite
(Alude)
1 ¼ quarts/acre
Postharvest sanitation
calcium hypochlorite
65%
3 to 10 oz/100 gal
150 to 500 ppm
—
—
Dip or spray 2 to 5 minutes. Monitor chlorine
concentration and add chlorine or change solution as
needed.
Postharvest Rhizopus
soft rot
dicloran
(Botran) 75 W
1 lb/100 gal
0.75 lb/100 gal
—
—
Spray or dip. Dip for 5 to 10 seconds in well-agitated
suspension. Add 1/2 pound Botran to 100 gallons of
treating suspension after 500 bushels treated. Do not
rinse.
3.3 to 6.5 fl oz/100 gal
—
—
Dip for approximately 30 seconds in well-agitated
solution and allow sweetpotatoes to drain. Add 8 fl oz
to 100 gals after 500 bushels are treated. OR mix 16
fluid ounces in 7 to 25 gallons of water, wax/emulsion,
or aqueous dilution of wax/ oil emulsion. Can also be
used to disinfest tanks, refer to label.
1 lb/100 gal
0.75 lb/100 gal
—
—
Seed dip: Dip seed sweetpotatoes 10 to 15 seconds
in a well-agitated fungicide suspension. Drain
sweetpotatoes and bed promptly. Prepare fresh
fungicide suspension daily.
Plant bed spray: Spray or sprinkle over bedded
sweetpotatoes before covering them with soil.
fludioxonil
(Scholar 1.9 SC)
Scurf (Monilochaetes
infuscans) and
Sclerotial blight
dicloran
(Botran) 75 W
White rust
azoxystrobin
(Quadris) 2.08 F
7
4 hr
alternating with fungicides that have a different mode
of action. Apply no more than 2.88 quarts per crop per
acre per season.
fenamidone
(Reason 500 SC)
0.178 to 0.267 lb/ acre
14
0.5
development, and continue on 5 to 10 day interval. Do
not apply more than 16.4 fluid ounces per growing
season. Alternate with a fungicide from different
resistance management group.
8 to 16 oz/acre
1.6 to 3.2 oz/acre
0
0.5
Do not apply more than 48 ounces per acre per
season. Alternate with a fungicide with a different
mode of action after each use.
pyraclostrobin
(Cabrio) 20 WG
543
Table 10-51. Efficacy of Products for Disease Control in Sweetpotato
Fusarium wilt
(F. oxysporum f. sp. batatas)
Java black rot (D. gossypina)
ND
ND
ND
ND
Pseudomonas syringae (Bio-Save)
F
ND
ND
ND
ND
ND
ND
ND
chlorine
F
F
P
P
ND
ND
ND
P
N, F
ND
P
P
F
P
F
dicloran (Botran 75W)
F
NC
P
ND
ND
F
ethoprop (Mocap)
N
ND
ND
NC
ND
fludioxonil (Scholar)
F
NC
ND
ND
ND
metam sodium (Vapam)
N
ND
P
P
oxamyl (Vydate)
F
ND
ND
N
ND
thiabendazole (Mertect 340-F)
F
NC
chloropicrin
Sweetpotato feathery mottle virus
Fusarium surface rot (F. oxysporum)
ND
Soil rot/Pox (S. ipomoea)
Fusarium root rot and stem canker
(F. solani)
ND
Scurf (M. infuscans)
Foot rot (P. destruens)
ND
Sclerotial blight/Circular spot
(S. rolfsii)
Black rot (C. fimbriata)
N
Rhizopus soft rot (R. stolonifer)
Bacterial stem and root rot
(E. chrysanthemi)
aldicarb (Temik)
Product
Root-knot and Reniform nematodes
(Meloidogyne & Rotylenchus spp.)
Nematicide (N) or Fungicide (F)
G
ND
ND
ND
ND
ND
ND
P
ND
ND
ND
ND
ND
ND
ND
P
NC
ND
F
F
ND
F
ND
F
ND
ND
P
ND
F
P
F
NC
ND
ND
ND
ND
P
ND
ND
ND
ND
ND
ND
ND
ND
NC
F
NC
ND
NC
ND
F
P
F
ND
F
ND
ND
ND
ND
ND
NC
ND
ND
ND
ND
F
ND
ND
ND
ND
ND
ND
NC
P
P
P
ND
G
ND
ND
ND
ND
ND
F
F
P
P
ND
F
ND
NC
F
P
NC
ND
Table 10-52. Importance of Alternative Management Practices for Disease Control in Sweetpotato
Soil rot/Pox (S. ipomoea)
Sweepotato Feathery Mottle Virus
NC
NC
NC
G
P
NC
G
NC
NC
NC
NC
NC
NC
E
NC
P
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
E
G
F
F
NC
NC
NC
NC
NC
P
G
NC
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
E
P
F
Careful handling to reduce mechanical injury
P
F
NC
Cutting plants (in beds) above soil line
P
G
NC
F
Manage insects that transmit pathogens
Sulfur added to soil to reduce pH
Fusarium wilt
(F. oxysporum f. sp. batatas)
G
NC
Fusarium surface rot
(F. oxysporum)
Fusarium root rot & stem canker
(F. solani)
F
Foot rot (P. destruens)
P
F
Black rot (C. fimbriata)
NC
FS
Bacterial stem and root rot
(E. chrysanthemi)
Sclerotial blight/Circular spot
(S. rolfsii)
NC
Rhizopus soft rot (R. stolonifer)
NC
Root-knot & Reniform nematodes
(Meloidogyne and Rotylenchus)
F
NC
Java black rot (D. gossypina)
G
G
F
F
E
F
Sanitation (equipment, fields, storage houses)
P
P
E
G
Soil sample for nematode analysis
E
F
G
Resistant cultivars
NC
NC
P
Disease-free planting stock
F
F
G
Crop rotation (3 to 4 years)
P
F
P
Strategy
Scurf (M. infuscans)
P
F
E
E
P
G
F
G
G
F
NC
NC
G
F
NC
NC
NC
Prompt curing and proper storage conditions
F
G
NC
F
G
NC
F
NC
G
NC
NC
NC
NC
Site selection (drainage)
P
NC
NC
F
F
F
F
NC
F
P
NC
P
NC
Manage insects that cause feeding injuries to roots
P
NC
NC
NC
NC
NC
P
NC
P
NC
NC
NC
NC
Avoid harvesting when soils are wet
F
F
NC
NC
E
NC
F
NC
F
NC
NC
NC
NC
Note: Resistant cultivars for root knot nematode are susceptible to reniform nematode
Sweetpotato Storage House Sanitation – See Sanitation
544
Tomatillo
Table 10-53. Disease Control Products for Tomatillo
Disease
Material
Early Blight
azoxystrobin (Quadris, Equation)
Active Ingredients
Harvest
5 to 6.2 fl oz/acre
0
4 hr
Limit of 37 fl ounces per crop per acre per season. Make
no more than one application before alternating with
8 fl oz/acre
2.4 fl oz/acre
0
0.5
Limit of 47 fluid ounces per acre per season. Do not apply
until 21 days after transplanting or 35 days after seeding.
boscald
(Endura)
2.5 to 3.5 oz/acre
0
0.5
(Inspire Super)
16 to 20 fl oz/acre
0
0.5
(Switch) 62.5 WG
11 to 14 oz/acre
0
0.5
Limit of 56 ounces per acre per year. After two
applications, rotate to another fungicide with a different
mode of action for two applications.
difenoconozole + mandipropamid
(Revus Top)
5.5 to 7 fl oz/acre
1
0.5
more than two consecutive applications per season before
action.
fenamidone
(Reason) 500SC
0.178 to 0.267 lb/
acre
14
0.5
fluoxastrobin
0.81 to 2.3 fl oz/A
3
0.5
application.
10 to 24 fl oz/acre
0
0.5
no more than two sequential applications per season
mode of action.
6.2 oz/acre
0.7 oz/acre
0
4 hr
Limit of five applications per season. Make no more than
one sequential applications before alternating with
pyraclostrobin (Cabrio) 20% EG
8 to 16 oz/acre
1.6 to 3.2 oz/acre
0
4 hr
Limit of 96 oz per acre per season. Make no more than
one sequential application before alternating with
Trifloxystrobin (Flint)
2 to 3 oz/acre
1 to 3.5 oz/acre
3
0.5
Limit of 16 ounces per acre per year. Make no more than
one sequential applications before alternating with
5 to 6.2 fl oz/acre
0
4 hr
Limit of 37 fluid ounces per crop per acre per season.
8 fl oz/acre
2.4 fl oz/acre
0
0.5
Limit of 47 fluid ounces per acre per season. Do not apply
until 21 days after transplanting or 35 days after seeding.
See label
See label
See label
See
label
2 to 2.44 pt/acre
3
0.5
16 to 20 fl oz/acre
0
0.5
(Switch) 62.5 WG
11 to 14 oz/acre
0
0.5
Limit 56 ounces per acre per year. After two applications,
rotate to another fungicide with a different mode of action
for two applications.
10 to 24 fl oz/acre
0
0.5
no more than two consecutive applications per season
mode of action.
6.2 oz/acre
0.7 oz/acre
0
4 hr
Limit five applications per season. Make no more than one
application before alternating with fungicides that have a
8 to 16 oz/acre
1.6 to 3.2 oz/acre
0
4 hr
than one sequential application before alternating with
5.5 to 7 fl oz/acre
0.089 to 0.114 lb/acre
0
0.5
more than two consecutive applications before alternating
(Quadris Top)
polyoxin D (Ph-D)
Powdery
mildew
Minimum Dasy
Formulation
azoxystrobin (Quadris) Flowable
(Quadris Top)
(Ariston)
(Inspire Super)
polyoxin D
(Ph-D)
pyraclostrobin (Cabrio) 20% EG
mandipropamid + difenoconazole
(Revus Top)
545
Tomato
F. Louws, North Carolina State University; M. L. Lewis Ivey, Louisiana State University; M. Paret, University of Florida
Table 10-54. Disease Control Products for Tomato
Disease
Material
Formulation
Minimum Days
Acive Ingredients
Harvest
NA
Tomato (grown for transplant and retail sale to consumers)
Late blight
4 hr
Apply no more than two applications containing Micora
per crop
Tomato (transplants) Treating seed to eliminate plant pathogens on or within the seed is recommended. For a list of seed treatments that are compatible with raw
(naked) seed see seed treatment table.
Bacterial canker,
sodium hypochlorite (Clorox
Bacterial spot, Bacterial 5.25%)
speck
(Agri-Mycin) 17 WP
(Streptrol) 21.3%
Bacterial spot, Bacterial bacteriophage (AgriPhage)
speck
Wash seed for 40 minutes in solution with continuous
agitation; air dry promptly. Use 1 gallon of solution per
1 pound seed.
1 lb/100 gal
NA
0
Begin application at first true leaf stage, repeat weekly
until transplanting. For plant bed use only.
3 to 8 oz/9,600 sq ft
NA
0
Works best if applied during or after last watering of the
day.
See label
See
label
Begin application at first true leaf stage, repeat at 3 to
day intervals until transplanting. Alternating with
streptomycin sulfate is recommended.
mancozeb (various)
See label
See label
See label
See
label
NOTE: Use a full rate of fixed copper in
combination with mancozeb. Mancozeb alone does
not control bacteria.
1 lb/100 gal
0.17 lb/100 gal
NA
0
Begin application at first true leaf stage, repeat weekly
until transplanting. For plant bed use only.
4.5 to 5.5 pts/acre
2.5 to 3.1 pt/acre
NA
0
Limit of 50 pints per acre per season. NOTE:
Phytotoxicity may occur on greenhouse transplants.
1 lb/100 gal
0.75 lb/100 gal
NA
0
Limit of 5.3 pounds product per acre per year. Do not
make more than 4 applications per crop. Apply as a
foliar spray to seedlings.
4.5 to 5.5 pts/acre
2.5 to 3.1 pt/acre
NA
0
Limit of 50 pints per acre per season. NOTE:
Phytotoxicity may occur on greenhouse transplants.
See label
See label
See label
See
label
NOTE: Use a full rate of fixed copper in
combination with mancozeb if bacteria control is
also required.
NA
0.5
Make a single DRENCH application to seedling tray at
the time of planting or at any time thereafter up until
one week before transplanting.
chlorothalonil + potassium
phosphite (Catamaran)
chlorothalonil + potassium
phosphite (Catamaran)
cyazofamid (Ranman)
propamocarb
(Previcur Flex)
Southern Blight
0
See label
mancozeb (various)
Pythium damping off
NA
See label
dicloran
(Botran 75W)
Early blight, Late blight
same
(Agri-Mycin 17,
Ag Streptomycin, BacMaster, FireWall)
Botrytis (gray mold),
Botrytis stem canker
1 qt + 4 qt water
3.0 fl oz/100 gallons
water
1.5 pt/acre
1 pt/acre
5
0.5
Limit of 7.5 pints per acre per season. Do not apply
more than once before alternating with fungicides that
have a different mode of action.
penthiopyrad
(Fontelis)
1 to 1.6 fl oz/1000
row ft
0.2 to 0.3 fl oz/1000
row ft
NA
0.5
Apply as a soil drench to seedling tray or at time of
transplant.
azoxystrobin
(Quadris, various)
5 to 6.2 fl oz/acre
0.08 to 0.1 lb/acre
0
4 hr
Limit of 37 fluid ounces per acre per season. Do not
make more than one application before alternating to a
fungicide with a different mode of action. NOTE: Under
high temperatures Satori in combination with some
additives or adjuvants may cause crop injury.
See label
See label
See label
See
label
(Quadris Opti)
1.6 pt/acre
0.8 pt/acre
0
4 hr
Must alternate with a non-FRAC code 11; use of an
adjuvant may cause phytotoxicity.
See label
See label
See label
See
label
16 to 20 fl oz
0
0.5
make more than two consecutive applications before
action.
4 to 8 fl oz/acre
0
0.5
action.
8 oz/acre
4 oz/acre
3
0.5
Limit of 72 fluid ounces per acre per season (12 month
cycle). Do not make more than one application before
alternating to a fungicide with a different mode of
action. NOTE: Must be tanked mixed with a contact
fungicide that has a different mode of action.
Tomato (field)
Anthracnose
(Inspire Super)
fluxapyroxad +
pyraclostrobin
(Priaxor)
(Tanos)
546
Disease
Material
Minimum Days
Formulation
Acive Ingredients
Harvest
1.9 to 3 pt/acre
0.8 to 1.3 pt/acre
3
0.5
See label
See label
See label
See
label
5.5 to 7 oz/acre
2.4 to 3.1 oz/acre
1
0.5
alternating with fungicides with different mode of
action.
24 fl oz/acre
4.8 fl oz/acre
0
0.5
Disease suppression only. Limit of 72 fluid ounces per
acre per season. Do not make more than two
consecutive applications before alternating with
0.7 oz/acre
0
4 hr
Alternate with non-FRAC code 19 fungicide.
8 to 12 oz/acre
1.6 to 3.2 oz/acre
0
0.5
make more than two applications before alternating to
3 to 4 oz
1.5 to 2 oz
3
0.5
DISEASE SUPPRESSION ONLY. Limit of 16 fluid
ounces per acre per season. Do not make more than
one application before alternating to a fungicide with a
Tomato (field) (continued)
Anthracnose
(continued)
cymoxanil + chlorothalonil
(Ariston)
mancozeb (various)
mandipropamid +
difenoconazole (Revus Top)
Penthiopyrad (Fontelis)
(Ph-D)
(Oso 5% SC)
zinc
dimethyldithiocarbamate
(Ziram 76 DF)
Limit of 24 pounds per acre per season. NOTE: Do not
use on cherry tomatoes.
3 to 4 lb/acre
2.3 to 3 lb/acre
7
2
0.165 to 0.375 oz/
acre
14
0
(Tanos)
8 oz/acre
4 oz/acre
3
0.5
ounces per acre per season (12 month cycle). Do not
fungicide with a different mode of action. NOTE: Must
be tanked mixed with a contact fungicide that has a
See label
See label
See label
See
label
See label. Rates vary depending on the formulation. A
fixed copper spray can suppress spot and foliar canker.
Most strains of spot and speck are copper resistant.
Spot control is improved if product is tanked mix with
mancozeb + fixed copper, see above. REI varies with
copper formulation, check label.
9 to 12.5 oz/acre
6.3 to 8.75 oz/acre
0
0.5
than 2 sequential applications and no more than 2 per
crop year.
See label
See label
See label
See
label
(Ariston)
1.9 pt/acre
0.8 pt/acre
3
0.5
11 to 14 oz/acre
6.9 to 8.8 oz/acre
0
0.5
16 to 20 fl oz
0
0.5
3.3 to 4.1 fl oz/100
gal
NA
NA
4 to 8 fl oz/acre
0
0.5
24 fl oz/acre
4.8 fl oz/acre
0
0.5
two consecutive applications before alternating with
pyrimethanil (Scala) SC
7 fl oz/acre
0.27 lb/acre
1
0.5
Bacterial speck,
Bacterial spot
(Actigard) 50 WG
Bacterial speck,
Bacterial spot,
Bacterial canker
Botrytis (gray mold)
6.2 oz/acre
Check copper labels for specific precautions and
limitations for mixing with this product.
boscalid (Endura)
(Switch 62.5 WG)
(Inspire Super)
Fludioxonil
(Scholar SC)
fluxapyroxad +
pyraclostrobin
(Priaxor)
547
Begin within one week of transplanting, spray at 7- to
10-day intervals for up to six applications. High rates
may cause plant stunting.
Limit of 32 pints per acre per season.
Limit of 56 ounces per acre per season. After two
applications alternate with another fungicide with a
different mode of action for two applications.
make more than 2 consecutive applications before
action.
Use as a postharvest dip only. NOTE: Do not use on
processing tomato varieties.
action.
Disease
Material
Minimum Days
Formulation
Acive Ingredients
Harvest
5 to 6.2 fl oz/acre
0.08 to 0.1 lb/acre
0
4 hr
(Quadris Opti)
1.6 pt/acre
0.8 pt/acre
0
0.5
(Tanos)
8 oz/acre
4 oz/acre
3
0.5
1.5 to 2 lb/acre
1.1 to 1.5 lb/acre
5
2
Buckeye rot
azoxystrobin
(Quadris, various)
mancozeb + zoxamide
(Gavel 75DF)
mefenoxam + copper
hydroxide
(Ridomil Gold/ Copper)
Cristulariella leaf spot,
Powdery mildew
one application before alternating to a fungicide with a
different mode of action. NOTE: Must be tanked
mixed with a contact fungicide that has a different
mode of action.
Limit of 8 pounds per acre per season West of the
Mississippi River. Limit of 16 pound per acre per
season East of the Mississippi River.
Tank mix with 0.8 pound a.i. of either maneb or
mancozeb.
2 lb/acre
1.3 lb/acre
14
2
1 to 1.6 oz/acre
1
1
Spray weekly beginning at first sign of disease. Do not
apply more than 1.25 pounds per acre.
2.5 to 5 lb/acre
2 to 4 lb/acre
14
0.5
Start sprays at 2 to 4 leaf stage or at transplanting on a
7 to 14 day schedule. Not for Phytophthora fruit rot.
Check label for specific counties in each state where
use is prohibited.
20 lb/treated acre
1 to 2 pt/treated A
1 to 2 qt/treated A
0.5 lb/treated acre
0.5 to 1 lb/treated A
0.5 to 1 lb/treated A
7
28
28
2
Apply uniformly to soil at time of planting. Incorporate
mechanically if rainfall is not expected before seeds
germinate. A second application may be made up to 4
weeks before harvest. Do not exceed 3 pints of Ridomil
Gold EC or 40 pounds of Ridomil Gold GR per acre.
propamocarb
(Previcur Flex)
1.5 pt/acre
1 pt/acre
5
0.5
See label
See label
See label
See
label
16 to 20 fl oz
0
0.5
mancozeb (various)
See label
See label
See label
See
label
mancozeb + copper
(ManKocide)
1 to 3 lb/acre
0.6 to 2 lb/acre
5
2
Limit of 42.7 pounds per acre per season West of the
Mississippi River. Limit of 58 pounds per acre per
1.5 to 2 lb/acre
1.1 to 1.5 lb/acre
5
2
mefenoxam
(Ridomil Gold GR)
(Ridomil Gold) 4 SL
Ultra Flourish) 2 EC
(Inspire Super)
mancozeb + zoxamide
(Gavel 75DF)
mandipropamid +
difenoconazole
(Revus Top)
Early blight,
Septoria leaf spot and
Target spot
Limit of five applications. Do not make more than one
application before alternating to a fungicide with a
2.5 to 4 oz/acre
myclobutanil (Rally) 40 WSP
Damping off (Pythium), fosetyl-Al (Aliette) 80 WDG
Root and fruit rots
(Phytophthora)
Gray Leaf Spot
(Stemphylium spp.)
fungicide with a different mode of action. NOTE: Under
high temperatures Satori in combination with some
additives or adjuvants may cause crop injury.
azoxystrobin
(Quadris, various)
azoxystrobin +
difenoconzole (Quadris Top)
(Quadris Opti)
have a different mode of action. For Pythium only.
action.
action.
5.5 to 7 oz/acre
2.4 to 3.1 oz/acre
1
0.5
3 to 4 oz
1.5 to 2 oz
3
0.5
5 to 6.2 fl oz/acre
0.08 to 0.1 lb/acre
0
4 hr
8 fl oz/acre
0.17 lb/acre
0
0.5
Rates vary depending
on the product
Rates vary
depending on the
formulation
0
0.5
Refer to label for rates and restrictions.
1.6 pt/acre
0.8 pt/acre
0
4 hr
548
Disease suppression only. Limit of 16 fluid ounces per
acre per season. Do not make more than one
application before alternating to a fungicide with a
fungicide with a different mode of action. NOTE:
Under high temperatures Satori in combination
with some additives or adjuvants may cause crop
injury.
Do not apply until 21 days after transplanting or 35
days after seeding. Limit of 47 fluid ounces per acre
fungicide with a different mode of action. NOTE: Do
not use on tomato varieties that bear mature fruit
less than 2 inches in diameter.
Disease
Material
Minimum Days
Formulation
Acive Ingredients
Harvest
2.5 to 3.5 oz/acre
0
0.5
11 to 14 oz/acre
6.9to 8.8 oz/acre
0
0.5
(Inspire Super)
16 to 20 fl oz
0
0.5
(Tanos)
6 to 8 oz/acre
3 to 4 oz/acre
3
0.5
1.9 to 3.0 pt/acre
0.8 to 1.3 pt/acre
3
0.5
fenamidone
(Reason) 500 SC
0.18 to 0.27 fl oz/
acre
14
4 hr
fluoxastrobin
(Aftershock, Evito) 480 SC
3
0.5
Early blight,
boscalid (Endura)
Septoria leaf spot and
Target spot (continued)
(Switch 62.5 WG)
(Ariston)
fluxapyroxad +
pyraclostrobin
(Priaxor)
Limit of 21 ounces per acre per season. Do not make
more than two applications of the high rate per season
and no more than six application of the low rate per
season. NOTE: Endura is not labeled for Septoria
leaf spot management.
different mode of action for two applications. NOTE:
Switch 62.5 WG is not labeled for Septoria leaf spot
or Target spot management.
action.
fungicide with a different mode of action. NOTE: Must
be tanked mixed with a contact fungicide that has a
different mode of action. For Septoria leaf spot
and target spot use 8 ounces per acre.
Limit of 24.6 fluid ounces per acre per season. Do not
apply more than once before alternating with fungicides
that have a different mode of action. NOTE: Reason
500 SC is not labeled for Target spot management.
apply more than once before alternating with fungicides
of action.
4 to 8 fl oz/acre
0
0.5
See label
See label
See label
See
label
mancozeb + zoxamide
(Gavel 75DF)
1.5 to 2 lb/acre
1.1 to 1.5 lb/acre
5
2
mandipropamid +
5.5 to 7 oz/acre
2.4 to 3.1 oz/acre
1
0.5
0.7 to 1.5 pt/acre
0.47 to 1 pt/acre
5
0.5
0.7 oz/acre
0
4 hr
mancozeb (various)
Propamocarb
(Previcur Flex)
Limit of 8 pounds per acre per season west of the
season east of the Mississippi River.
apply more than two consecutive applications before
alternating with a fungicide that have a different mode
of action.
have a different mode of action. Tank mix with a
compatible fungicide for optimal Early blight control.
NOTE: Previcur Flex is not labeled for Septoria leaf
spot or Target spot management.
(Ph-D)
(Oso 5% SC)
6.2 oz/acre
3.75 to 13.0 fl
8 to 12 oz/acre
1.6 to 3.2 oz/acre
0
0.5
make more than two applications before alternating to
Pyrimethanil (Scala) SC
7 fl oz/acre
0.27 lb/acre
1
0.5
Limit of 35 fluid ounces per acre per season. Use only
in a tank mix with another fungicide recommended for
Early blight. NOTE: Scala SC is not labeled for
Septoria leaf spot management. Scala SC is only
labeled for Target spot in Florida.
3 to 4 oz/acre
1.5 to 2 oz/acre
3
0.5
zinc
dimethyldithiocarbamate
(Ziram) 76 DF
3 to 4 lb/acre
2.3 to 3 lb/acre
7
2
fungicide with a different mode of action. NOTE: Flint
is not labeled for Early blight or Target spot
management.
Limit of 24 pounds per acre per season. NOTE: Do not
use on cherry tomatoes. Ziram 76DF is not labeled
for Target spot management.
zoxamide + chlorothalonil
(Zing)
36 fl oz/acre
—
5
0.5
549
Do not use more than 2 sequential applications before
action. Not labeled for Target spot management.
Disease
Material
Minimum Days
Formulation
Acive Ingredients
Harvest
5 to 6.2 fl oz/acre
0
4 hr
Limit of 37 fluid ounces per crop per acre per season.
Make no more than one application before alternating
8 fl oz/acre
2.4 fl oz/acre
0
0.5
apply until 21 days after transplanting or 35 days after
seeding.
2 to 2.44 pt/acre
3
0.5
11 to 14 oz/acre
6.9to 8.8 oz/acre
0
0.5
different mode of action for two applications.
(Inspire Super)
16 to 20 fl oz/acre
0.60 to 0.75 lb/acr
0
0.5
mandipropamid +
5.5 to 7 fl oz/acre
0.089 to 0.114 lb/acre
0
0.5
2.5 to 4 oz/acre
1 to 1.6 oz/acre
1
1
more than two consecutive applications before
of action.
Limit of 1.25 pounds per acre per season.
16 to 24 fl oz/acre
0
0.5
0.7 oz/acre
0
4 hr
8 to 16 oz/acre
1.6 to 3.2 oz/acre
0
4 hr
See labels
See labels
1
1
Powdery mildew
azoxystrobin +
difenoconazole
(Quadris Top)
(Ariston)
(Switch 62.5 WG)
Myclobutanil
(Rally 40 WSP) (various)
(Ph-D)
(Oso 5% SC)
pyraclostrobin (Cabrio) 20%
EG
sulphur (various)
Late blight
6.2 oz/acre
Do not exceed 72 fluid ounces of product per year.
Make no more than two consecutive applications per
season before alternating with fungicides that have a
Alternate
with non-FRAC
different mode
of action. code 19 fungicide.
Limit of 96 ounces per acre per season. Make no
more than one sequential application before
Follow
labels; may cause leaf burn if used under high
of action.
temperatures.
6.2 fl oz/acre
0
4 hr
fungicide with a different mode of action. NOTE: Apply
at 5 to 7 day intervals for effective late blight
management.
See label
See label
See
label
(Quadris Opti)
1.6 pt/acre
0.8 pt/acre
0
4 hr
1.9 to 3.0 pt/acre
0.8 to 1.3 pt/acre
3
0.5
0
0.5
(Ariston)
cyazofamid
(Ranman 400 SC)
Cymoxanil (Curzate 60 DF)
3.2 to 5 oz/acre
1.9 to 3.0 oz
3
0.5
dimethomorph
(Acrobat 50 WP)
(Forum 4.18 F)
6.4 oz/acre
6 oz/acre
3.2 oz/acre
2.6 oz/acre
4
4
0.5
0.5
dimethomorph +
ametoctradin (Zampro)
14 fl oz/acre
6.6 fl oz/acre
4
0.5
0.18 to 0.27 fl oz/
acre
14
4 hr
3 to 4 fl oz/acre
2
0.5
fenamidone
(Reason 500 SC)
fluopicolide (Presidio 4F)
fluoxastrobin
(Aftershock or
Evito 480 SC)
5.7 fl oz/acre
0.18 lb/acre
550
3
0.5
fungicide with a different mode of action. NOTE:
Ranman must be tank mixed with an organosilicate
surfactant.
Limit of 30 ounces per 12 month period. Use only in
combination with a labeled rate of a protectant
fungicide. If late blight is present use 5 ounces per acre
on a 5 day schedule.
Limit of 30 ounces per acre per season. Performance
is improved if tanked mix with another fungicide with a
different mode of action. Follow label restrictions
carefully.
action. The addition of a spreading or penetrating
adjuvant is recommended to improve product
performance.
apply more than once before alternating with
Limit of 12 fluid ounces per acre per season or four
applications. Do not make more than two consecutive
applications before alternating to a fungicide with a
different mode of action. Use only in combination with
a labeled rate of another fungicide product with a
DISEASE SUPPRESSION ONLY. Limit of 22.8 fluid
ounces per acre per season. Do not apply more than
once before alternating with fungicides that have a
Disease
Material
Minimum Days
Formulation
Acive Ingredients
Harvest
8 fl oz/acre
3.4 fl oz/acre
0
0.5
See label
See label
See label
See
label
2.5 to 5 lb/acre
1.5 to 3 lb/acre
1.5 to 2 lb/acre
1.1 to 1.5 lb/acre
5
5
1
2
mandipropamid +
difenoconazole
(Revus Top)
5.5 to 7 oz/acre
2.4 to 3.1 oz/acre
1
0.5
(Ridomil Gold Bravo)
2.5 to 3 lb/acre
1.5 to 2.2 lb/acre
14
2
Do not make more than 3 applications of Ridomil
Gold/Bravo or Ridomil Gold MZ per crop. Tank mix
Bravo MZ58 with 0.45 lb mancozeb 80W.
2.5 lb/acre
1.7 lb/acre
5
2
Do not make more than 3 applications of Ridomil
Gold/Bravo or Ridomil Gold MZ per crop. Tank mix
Bravo MZ58 with 0.45 pound mancozeb 80W.
Late Blight (continued)
fluxapyroxad +
pyraclostrobin
(Priaxor)
mancozeb (various)
mancozeb + copper
hydroxide (ManKocide)
mancozeb + zoxamide
(Gavel 75DF)
(Ridomil Gold MZ)
mono- and di-potassium
salts of phosphorous acid
(Alude)
(Ph-D)
(Oso 5% SC)
6.2 oz/acre
0.5
trifloxystrobin
(Flint)
4 oz/acre
2 oz/acre
3
0.5
5
0.5
36 fl oz
azoxystrobin +
difenoconzole (Quadris Top)
8 fl oz/acre
0.17 lb/acre
0
0.5
(Inspire Super)
16 to 20 fl oz/acre
0
0.5
(Tanos)
8 oz/acre
4 oz/acre
3
0.5
mancozeb (various)
See label
See label
See label
See
label
mancozeb + copper
hydroxide
(ManKocide) 61 DF
2.5 to 5 lb/acre
1.5 to 3 lb/acre
5
1
mancozeb + zoxamide
(Gavel 75DF)
1.5 to 2 lb/acre
1.1 to 1.5 lb/acre
5
2
0.7 oz/acre
0
4 hr
See label
See label
0
0
3
0.5
propiconazole (Mentor)
Southern blight
fluoxastrobin
(Aftershock, Evito) 480 SC
apply more than two consecutive applications before
alternating with a fungicide that have a different mode
of action.
4 hr
5
Sour rot (Geotrichum
candidum)
0
0.47 to 1 pt/acre
6.2 oz/acre
3.75 to 13.0 fl oz
Apply at 7- to 10-day intervals. Do not mix with other
fungicide products.
0.7 oz/acre
0.7 to 1.5 pt/acre
(Ph-D)
(Oso 5% SC)
4 hr
propamocarb
(Previcur Flex)
zoxamide + chlorothalonil
(Zing)
Leaf mold
1.5 to 2 qt/acre
551
make more than one application before alternating with
a protectant fungicide. NOTE: Apply Flint with 75% of
the labeled rate of a protectant fungicide.
Do not use more than 2 sequential applications before
action. Do not tank mix with another fungicide if the
target pest is only late blight. Tank mix only if a partner
is required to control other diseases.
Do not apply until 21 days after transplanting or 35
days after seeding. Limit of 47 fluid ounces per acre
fungicide with a different mode of action. NOTE: Do
not use on tomato varieties that bear mature fruit
less than 2 inches in diameter.
action.
Limit of 72 fluid ounces per acre per season (12 month
cycle). Do not make more than one application before
action. NOTE: Must be tanked mixed with a contact
fungicide that has a different mode of action.
Apply at 7- to 10-day intervals. Do not mix with other
fungicide products.
Use Mentor as a post-harvest dip, drench or high
volume spray to control certain post-harvest rots. See
label for details.
development, on 7- to 10-day intervals. Do not apply
have a different mode of action. Do not apply more
than 22.8 fluid ounces per acre per season.
Disease
Material
Minimum Days
Formulation
Acive Ingredients
Harvest
4 to 8 fl oz/acre
0
0.5
4.5 to 7.5 pt/100 gal;
use 0.5 pt of solution
per plant.
1.8 to 3 pt/100 gal
NA
0.5
1.2 to 1.9 gal; apply
10.6 to 16.7 fl oz
product per 1000 ft of
row
4.2 to 6.7 fl oz per
1000 ft of row
NA
0.5
1 to 1.6 fl oz/1000 row
ft
0.2 to 0.3 fl oz/1000
row ft
NA
0.5
Apply as a soil drench to seedling tray or at the time of
transplant.
12 to 16 oz/acre
2.4 to 3.2 oz/acre
0
4 hr
two applications before alternating to a fungicide with a
Southern blight
(continued)
fluxapyroxad +
pyraclostrobin
(Priaxor)
PCNB
(Blocker 4F) 40%
(transplanting)
PCNB
(Blocker 4F) 40%
(in furrow)
Timber rot , white mold
or Sclerotinia stem rot
fluxapyroxad +
pyraclostrobin
(Priaxor)
4 to 8 fl oz/acre
0
0.5
Pyraclostrobin
(Cabrio) 20% EG
12 to 16 oz/acre
2.4 to 3.2 oz/acre
0
4 hr
Transplanting: Apply at the time of transplanting for
Southern blight suppression. The solution should be
agitated often to maintain a uniform mixture to assure
proper dosage. Limit of 7.5 pounds a.i. per acre per
season.
In furrow: Apply in 8 to 10 gallons of water per acre
based on 36-inch row spacing. Apply as in-furrow
sprays to the open "V" trench just prior to planting.
When cultivating, set plows as flat as possible to avoid
getting non-treated soil against stems or plants. Limit
of 7.5 pounds a.i. per acre per season.
two applications before alternating to a fungicide with a
Table 10-55. Importance of Alternative Management Practices for Disease Control in Tomato
Botrytis
Buckeye rot
Early blight
Late blight
Leaf Mold
(greenhouse or
open field)
Powdery mildew
F
NR
NR
F
F
P
F
Use of disease free seed or transplants
G
G
G
NC
NC
NC
NC
F
NC
Use of seed treatments
G
G
G
NC
NC
P
P
F
NA
Use of sanitation practices at the transplant stage
G
G
G
G
NC
NC
NC
F
Crop rotation (3-4 years)
F
P
P
NC
F
F
NC
F
Control of solanaceous weeds
Tomato spotted
wilt virus**
Bacterial spot
P
Use of resistant cultivars
Target Spot
(greenhouse or
open field)
Bacterial speck
NR
Strategy
Septoria leaf
spot
Bacterial
canker*
NR
P
G
P
F
NA
P
ND
NA
NC
NC
F
NC
NC
P
P
NC
F
NC
NC
F
F
F
F
F
F
F
F
F
Fertility
NC
NC
NC
F
NC
F
NC
ND
NC
NC
ND
NC
Use of cover crops
NC
NC
NC
NC
F
P
NC
ND
NC
NC
ND
NC
F
NC
NC
NC
NC
P
NC
F
NC
F
F
ND
Rogue plants
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Promote air movement
F
F
F
F
P
P
F
F
P
F
F
NA
Use of plastic or reflective mulches
NC
NC
NC
NC
F
F
NC
NC
NC
F
NC
G
Do not handle plants when wet
G
G
G
NC
NC
P
P
F
NC
P
F
NC
Use of drip irrigation (avoiding overhead irrigation)
F
F
F
F
P
F
F
F
NC
F
F
NC
Use of biological control or biorational products
P
P
F
P
NC
P
P
P
P
NC
P
NC
Use of foliar fungicides/bactericides
F
P
F
F
F
G
G
F
G
G
F
NA
Use of insecticides
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
F
Soil fumigation
NC
NC
NC
NC
F
P
NC
NC
NC
NC
NC
NC
552
Table 10-56. Efficacy of Products for Disease Control in Tomato
Leaf mold (Fulvia
fulva)
Powdery Mildew
Septoria Leaf Spot
Target Spot
F
F
F
ND
F
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
F
F
NC
G
NC
ND
ND
ND
F
NC
F
P
F
G
G
P
G
F
NC
NC
F
P
F
G
F
P
F
F
NC
NC
NC
NC
NC
F
F
NC
NC
NC
NC
Early Blight
F
Buckeye Rot
G
Botrytis Graymold
E
Bacterial Spot
G
Preharvest
Interval
(Days)
Bacterial Speck
F
Fungicide
F
Group
Bacterial Canker
(foliar)
Late Blight
11
1
NC
NC
NC
NC
ND
E
11 + 27
3
NC
NC
NC
NC
P
bacteriophage (AgriPhage)
NA
0
NC
P
P
NC
acibenzolar-S-methyl9 (Actigard)
21
14
ND
F
F
boscalid (Endura)
7
0
NC
NC
NC
M
0
NC
NC
M + 27
3
NC
21
0
1
Product
2
famoxadone + cymoxanil (Tanos)
3
chlorothalonil + cymoxanil (Ariston)
cyazofamid (Ranman)
cymoxanil (Curzate)
R
R
R
27
3
NC
NC
NC
NC
ND
NC
F
ND
NC
ND
NC
9 + 12
0
NC
NC
NC
F
NC
F
NC
NC
F
NC
NC
dimethomorph (Acrobat, Forum)
40
4
NC
NC
NC
NC
F
NC
F
NC
NC
NC
NC
3+9
0
NC
NC
NC
NC
NC
F
NC
F
G
F
F
40 + 45
4
NC
NC
NC
NC
NC
NC
G
NC
NC
NC
NC
11
14
NC
NC
NC
NC
F
F
F
P
ND
P
FR
dimethomorph + ametoctradin (Zampro)
fenamidone (Reason)
R
R
M
0
F
F
F
NC
P
F
F
F
P
F
NC
43
2
NC
NC
NC
NC
P
NC
G
NC
NC
NC
NC
11 + 7
0
NC
NC
NC
F
NC
G
NC
ND
ND
ND
F
M
5
NC
NC
NC
NC
P
F
F
F
NC
F
F
mancozeb + fixed copper (ManKocide)
M+M
5
F
F
F
NC
P
F
F
F
P
F
P
mancozeb + zoxamide (Gavel)
M + 22
3
NC
NC
NC
NC
P
F
F
F
NC
F
NC
mandipropamid + difenoconazole (Revus Top)
40 + 3
1
NC
NC
NC
NC
P
F
G
ND
NC
ND
G
4+M
14
NC
NC
NC
P
E
P
E
F
NC
F
F
NC
mancozeb (various)
8
mefenoxam + chlorothalonil (Ridomil Gold Bravo, Flouronil)
R
mefenoxam + copper (Ridomil Gold/Copper)
4+M
14
F
F
F
NC
E
F
E
F
P
F
mefenoxam + mancozeb (Ridomil Gold MZ )
4+M
5
NC
NC
NC
NC
E
F
GR
F
NC
F
P
3
1
NC
NC
NC
NC
NC
NC
NC
NC
G
NC
ND
7
0
NC
NC
NC
F
NC
G
NC
ND
ND
ND
F
polyoxin D zinc salt (Ph-D; Oso 5% SC)
19
0
ND
ND
ND
F
ND
F
ND
ND
F
ND
F
28
5
NC
NC
NC
NC
P
NC
F
NC
NC
NC
NC
11
0
NC
NC
NC
NC
P
ER
F
G
E
G
FR
9
1
NC
NC
NC
F
NC
F
NC
ND
ND
ND
F
Streptomycin4 (Agri-Mycin, Streptrol)
25
0
F
F
F
NC
NC
NC
NC
NC
NC
NC
NC
sulfur (various)5
M
0
NC
NC
NC
NC
NC
NC
NC
NC
F
NC
NC
zinc dimethyldithiocarbamate10(Ziram)
M
7
NC
NC
NC
NC
NC
F
ND
F
ND
F
ND
myclobutanil (Rally)
1
2
Contact control only; not systemic.
3
Biological control product consisting of a virus that attacks pathogenic bacteria.
4
Streptomycin may only be used on transplants; not registered for field use.
5
Sulfur may be phytotoxic; follow label carefully.
7
Curative activity; not systemic.
8
Curative activity; systemic.
9
Systemic activated resistance.
10
Do not use on cherry tomatoes.
F
To prevent resistance in pathogens, alternate fungicides within a group with fungicides in another group. Fungicides in the “M” group are generally considered “low risk” with no
signs of resistance developing to the majority of fungicides.
R
553
Table 10-57. Example Spray Program for Foliar Disease Control in Fresh Market Tomato Production
Week
Chemical
Number of Applications of Chemical Per Season
Before Harvest (weeks 1 to 8)
1
1
Mancozeb + copper + Actigard
1
mancozeb, 1; Actigard, 1
1
2
mancozeb + copper
3
mancozeb + strobilurin
1
mancozeb, 2
1,3
+ Actigard
1
4
mancozeb + copper
5
Endura low rate + Actigard
6
mancozeb + copper
mancozeb, 4
2
Endura 1; Actigard, 3
1
1
mancozeb, 3; strobilurin, 1; Actigard, 2
mancozeb, 5
1,3
7
mancozeb + strobilurin
8
mancozeb + copper
+ Actigard
1
mancozeb, 6; strobilurin, 2; Actigard, 4
mancozeb, 7
During Harvest (weeks 9 to 15) (Note: For fields in with low or no danger of Late Blight, Revus Top, Ranman and Presidio may not be essential tools;
the protectant, chlorothalonil may suffice. Contact your local Extension office to learn if Late Blight is present in your region).
9
1
0
1
1
1
2
1
3
1
4
1
5
Endura low or high rate + chlorothalonil
1
chlorothalonil, 1; Endura, 2
Revus Top OR Presidio OR Ranman
Revus Top, 1; Presidio, 1; Ranman, 1
chlorothalonil + strobilurin1,3
chlorothalonil, 2; strobilurin, 3;
Revus Top1 OR Presidio OR Ranman
Endura low or high rate + chlorothalonil
chlorothalonil, 3; Endura, 3
1
Revus Top OR Presidio OR Ranman
chlorothalonil + strobilurin1,3
chlorothalonil, 4; strobilurin, 4
Finish season with chlorothalonil
Refer to the label for rates to use in volume-based spraying.
1
Total number of applications per season restricted by the label.
2
Use high rate of Endura if conditions are cool and wet right before or during harvest when there is risk of gray mold.
3
Use a group 7 fungicide such as Fontelis instead of fungicides from group 11 such as Cabrio or Quadris in regions were early blight cannot be controlled with QoI fungicides due to
fungicide-resistant isolates
Turnip Greens – see Greens and Leafy Brassicas
Turnip Roots – see Root Vegetables
For Watermelons – see Cucurbits
Nematode Control in Vegetable Crops
Crop losses due to nematodes can be avoided or reduced by using the following management
tactics.
 Practice crop rotation.
 Plow out and expose roots immediately after the last harvest.
 Plow or disk the field two to four times before planting.
 Use nematode-free planting material.
 Sample soil and have it assayed for nematodes, preferably in the fall. There is a fee for each
sample. Ship sample via DHL, FedEx, or UPS to: North Carolina Department of Agriculture and
Consumer Services.
 Where warranted, fumigate or use other nematicides according to guidelines listed on the
label. (Soil should be warm, well worked, and free from undecomposed plant debris and have
adequate moisture for seed germination.)
 For in-row application, insert chisel 6 to 8 inches deep and throw a high, wide bed up over it;
do not rework rows after fumigating.
 For broadcast treatments, insert chisels 6 to 8 inches deep, and space chisels 12 inches apart
for most fumigants; use 5-inch spacing for Vapam.
Row rates in this section are stated for rows on 40-inch spacing. For other row spacings, multiply
the stated acre rate by the appropriate conversion factor to determine the amount of material
applied per acre (Do not alter stated amount per 100-foot row). This will be a guide to the amount of
material to purchase for the acreage you want to treat.
For example, if 10 gallons per acre are used on 40-inch rows, for 36-inch rows, it will take 11.1
gallons to treat an acre.
CAUTION: Read labels carefully. Some products have restrictive crop rotations .
554
Your Row Spacing (inches)
Conversion Factor
24
1.67
26
1.54
28
1.43
30
1.33
32
1.25
34
1.18
36
1.11
38
1.05
40
1.00
42
0.952
44
0.909
46
0.870
48
0.833
5 ft
0.667
6 ft
0.556
7 ft
0.476
8 ft
0.417
Relative Efficacy of Currently Registered Fumigants or Fumigant Combinations
for Managing Soilborne Nematodes, Diseases, and Weeds
Table 10-58A. Relative Efficacy of Currently Registered Fumigants or Fumigant Combinations for Managing Soilborne
Nematodes, Diseases, and Weeds1,2
Fumigants: New labels require extensive risk mitigation measures including fumigant management plans (FMPs), buffer restrictions, worker protection safety standards and other
measures. Details are on the labels and see http://www2.epa.gov/soil-fumigants. Some fumigants are registered on multiple crops but with crop- or soil-type -specific rates; others
are registered for specific crops and/or in certain states only. Follow all labels carefully.
Product
Telone II (1,3-D)
Telone C17 (1,3-D + chloropicrin)
Telone C35 (1,3-D + chloropicrin)
Telone C35 + VIF5
InLine (1,3-D + chloropicrin)3
4
Metam sodium (MS)
Metam potassium
4
Rate per
5
Broadcast Acre
Nematodes
Disease
Nutsedge
9 to 12 gallons
+++++
+
-
-
32.4 to 42 gallons
+++++
+++
+
+
Weeds: Annual
39 to 50 gallons
+++++
+++++
+
++
See comments below
+++++
+++++
+++
+++
29 to 38.4 gallons
+++++
+++++
+
+++
37.5 to 75 gallons
++
+++
+
++++
++++
30 to 60 gallons
++
+++
+
Chloropicrin
150 to 350 pounds
+
+++++
—
—
Pic-Chlor 60 (chloropicrin + 1,3-D)
19.5 to 31.5 gallons
+++++
+++++
+
+++
19.5 to 31.5 gallons + 37.5 to 75 gallons
++
+++++
++
++++
35.0 – 51.3 gallons
++++
++++
++++
+++5
25 to 40 gallons
++8
+++8
+8
+++8
6
Chloropicrin + MS
Paladin (dimethyl disulphide) should be
formulated with 21% chloropicrin + VIF7
Dominus (allyl isothiocyanate)8
1
Each of the fumigants listed in this table has performed well in regional trials. Some alternative fumigants may need to be complemented with herbicides
or hand weeding, depending on weed pressure. Dominus was recently registered but there is limited experience with the product through University or
independent trials in our region; therefore growers may want to consider this on an experimental basis. Telone can persist more than 21 days under cool
or wet soil conditions.
2
Refer to the Herbicide Recommendation section of this guide for directions pertaining to herbicide applications. Fumigants with low efficacy against weeds
require a complementary herbicide program
3
InLine is formulated for application through drip lines; efficacy is dependent on good distribution of the product in the bed profile.
4
Metam sodium can be Vapam, Sectagon 42, Metam CLR or other registered formulations; metam potassium can be Metam KLR, K-Pam, Sectagon K54
or other registered formulations. Metam potassium should be used in soils with high sodium content.
5
Reduced rates can be used with virtually impermeable film (VIF).
6
Chloropicrin is available in multiple formulations and labels including an EC formulation for applications through drip irrigation systems.
7
Paladin has low efficacy on certain small seeded broadleaf weeds and grasses; Paladin is not registered in all States. Paladin is also available in an EC
formulation for application through drip irrigation systems.
8
Dominus was recently registered but there is limited experience with the product through University or independent trials in our region; therefore
growers may want to consider this on an experimental basis. Plant back time is 10 days. The active ingredient allyl isothiocyanate is most similar to the
active breakdown ingredient of Vapam (methyl isothiocyanate) and is likely to behave in a similar manner with a similar pest control profile.
Management of Soilborne Nematodes with Non-Fumigant Nematicides
Nematodes are best managed through an integrated program (IPM). Key management options may include securing advisory/predictive
soil samples, crop rotation, fallow periods, host resistance, soil amendments, flooding, soil solarization, suppressive cover crops and
other options. For more details see https://edis.ifas.ufl.edu/cv112.
Table 10-58B. Management of Soilborne Nematodes with Non-Fumigant Nematicides
Formulated Rate Per
100 Sq Ft Or 100 Ft
Row
Application Method for
Given Soils
Formulated Rate
per Acre
Banded or low pressure drip
irrigation
See label
See label
See label.
ethoprop (Mocap) various
formulations
Broadcast or banded
See label
See label
Incorporate 2 to 4 inches deep. See label.
Cabbage
formulations
Broadcast or banded
See label
See label
Restricted use pesticide. Incorporate 2 to 4
inches deep.
Carrot
oxamyl (Vydate) L
Preplant broadcast
2 gal in 20 gal
1 gal in 20 gal
At planting seed furrow
1 to 2 gal in 20 gal
0.3 to 0.6 fl oz in
5.9 fl oz
Apply (in furrow) within 1 wk of planting, and
thoroughly incorporate into soil 4 to 6 inches
deep. May be applied via chemigation or InFurrow – see label. 14 days to harvest
restriction.
Banded only
See label
See label
Commodity
Material
Most vegetables
Ditera DF Biological
nematicide
Bean (snap and lima)
Cucumber
formulations
555
Table 10-58B. Management of Soilborne Nematodes with Non-Fumigant Nematicides
Commodity
Material
Cucurbits (cucumber,
squash, cantaloupe,
watermelon, honeydew,
pumpkin)
oxamyl (Vydate) L
Cucurbits (Group 9)
including
Cucumber, squash,
honeydew, watermelon, and
many others (see label).
Fruiting vegetables (Group
8) including tomato, pepper
and eggplant and many
others (see label).
Fluensulfone (Nimitz)
NOTE: Nimitz received
federal registration Sept
2014 – check registration
status in your State.
Eggplant
fenamiphos (Nemacur)
(Also see fruiting vegetables
above)
oxamyl (Vydate) L
Pepper (bell & non-bell)
oxamyl (Vydate) L
(Also see fruiting vegetables
above)
Potato
formulations
oxamyl (Vydate) L
Sweetpotato
aldicarb (Temik) 15 G
formulations
oxamyl (Vydate) L
Formulated Rate Per
100 Sq Ft Or 100 Ft
Row
Application Method for
Given Soils
Formulated Rate
per Acre
Preplant broadcast
1 to 2 gal
—
Incorporate 2 to 4 inches into soil.
Foliar
2 - 4 pt
—
Apply by air or ground with the first spray 2-4
weeks after planting; apply second spray 2-3
weeks after first spray.
Drip chemigation or Soil
injection
2 to 4 pt
0.07 to 0.15 fl oz
Treatments should be initiated at the time of
seedling emergence or transplanting, or
within 14 days of seedling emergence or
transplanting. Sequential applications should
be made on 14 to 21 day intervals. Do not
treat within one day of harvest.
—
—
3.5 to 5 pints/ treated
acre
(56 to 80 fl. oz./treated
acre)
Applications must be broadcast incorporated,
banded and incorporated, or by drip irrigation.
Apply at a minimum of 7 days before
transplanting. Do not apply more than one
application per crop, and no more than 112 fl
oz of product per acre, per year (365 days).
Banded
5.9 fl oz/1000 ft
On narrow rows do not let bands overlap.
See label.
Banded on soil
—
1 gal
Foliar
4 pt
—
Apply twice by ground equipment at 1 to 2
week intervals 2 to 4 weeks after the second
soil treatment.
injection
2 to 4 pt
0.07 to .15 fl oz
Treatments should be initiated either at the
time of transplanting, or within 14 days of
treat within 7 days of harvest.
Transplant water
2 pt in 200 gal
—
Foliar
2 to 4 pt
—
Apply 14 days after transplant repeat 1 to 2
week intervals. Do not treat within 7 days of
harvest.
injection
2 to 4 pt in
—
Treatments should be initiated either at the
time of transplanting, or within 14 days of
treat within 7 days of harvest.
Broadcast or banded
See label
See label
Furrow
—
Apply to seed furrow at planting; begin foliar
sprays when early season control has
diminished.
Apply in a 12- to 15-inch band and
incorporate 4 to 8 in. deep, plant. Do not
harvest within 120 days of treatment. Do not
use vines. NOTE: For use ONLY in LA or
MS.
See label.
Incorporate 2 to 4 in. deep. See label.
Foliar
2 to 4 pt
40-in. rows
10 to 20 lb
0.4 to 0.7 oz
Banded only
See label
See label
Preplant broadcast
—
Transplant water
1 to 2 gal in 200
gal
Thoroughly incorporate into soil 4 to 6 in.
deep and plant.
Sweet corn
formulations
Broadcast or banded
See label
See label
Incorporate 2 to 4 in. deep. See label.
Sweet corn, Popcorn
terbufos (Counter) various
formulations (see label)
Row, 30-in. min.
See label
See label
Apply in furrow
Tomato
oxamyl (Vydate) L
Foliar
2 to 4 pt
—
Spray when plants are established. Repeat 1to 2-week intervals.
Drip irrigation
2 to 8 pt
—
Apply at first irrigation to field. Repeat every 1
to 2 weeks while plants are small. As plants
enlarge, increase dosage progressively to 8
pints.
556
Greenhouse Disease Control
Most foliar diseases can be reduced or controlled by maintaining relative humidity under 90 percent, by keeping the air circulating in the
house with a large overhead polytube, and by avoiding water on the leaves. Products registered for field use may be used on the
greenhouse crop (but not transplants) unless the label prohibits greenhouse use. If you need clarification of whether your structure is
considered a greenhouse, see the Definitions section 4.17-4.19 of the Agricultural Worker Protection Standard 40 CFR Parts 156 and
170 interpretive policy: (http://www.epa.gov/pesticides/safety/workers/wpsinterpolicy.htm). In general, a structure is considered a
greenhouse if it is enclosed with nonporous covering.
Caution: The risk of pesticide exposure in the greenhouse is high. Use protective clothing laundered daily or after each exposure.
Ventilate during application and use appropriate respirator.
Table 10-59A. Greenhouse Disease Control Products
Minimum Days
Commodity
Disease
Materials
Harvest
Rentry
Greenhouse
Sanitation
Solarization
140 degrees F,
4 to 8 hr for
7 days
—
—
—
Close up greenhouse during hottest and sunniest
part of summer for at least 1 week. Greenhouse
must reach at least 140 degrees F each day.
Remove debris and heat sensitive materials and
keep greenhouse and contents moist; will not
control pests 0.5 inch or deeper in soil; not
effective against TMV.
Added heat
180 degrees F for 30
minutes
—
—
—
Remove all debris and heat-sensitive materials.
Keep house and contents warm.
Soil
Soilborne diseases
and weeds
Bean (dry)
Leaf spots,
mancozeb
(various)
Alternaria leaf spot
anb blight, Gray
mold, Gummy stem
blight, Powdery
mildew, Sclerotinia
stem rot
Sclerotium, Southern
stem blight,
Sclerotinia, white
mold
Lettuce (leaf)
Rate of Formulation
Rate of Active
Ingredient
Preplant soil treatment. See table on sanitizing
greenhouses and plant beds.
See soil fumigants table and check soil fumigant label if registered for
greenhouse use.
See label
See label
penthiopyrad
(Fontelis)
0.375 to 0.5 fl oz/gal to
treat 1360 sq. ft
0.13 to 0.31
lb/acre
Botran 75W
Botrytis
Pepper
Broccoli, Brussels
sprout, cauliflower
Cabbage, kohlrabi
formulation.
Spray at first appearance of leaf spot or downy
mildew.
Not effective against powdery mildew.
Cucurbits
Eggplant
Kale
Lettuce, endive
Melon
Onion
Cucurbits
0
0.5
1.3 lb/ acre
14
1
Apply when disease first appears to diseased
areas of plants.
Botran 75W
2.6 lb/43,560 sq ft
14
1
Spray 7 days after transplanting and when half
mature.
Various diseases
(see label)
penthiopyrad
(Fontelis)
treat 1360 sq. ft
Rhubarb
Botrytis
Botran 75W
1.3 lb/43,560 sq ft
30.5
1
Tomato, leaf
lettuce, cucurbit,
peppers
Tomato
Seedling and
Pretransplant
Pythium,
Phytophthora
propamocarb
(Previcur Flex)
1:1,000
2
0.5
See label instructions for use before and after
transplanting.
0
0.5
For transplant production only. Begin applications
at the first true leaf stage. Repeat weekly until
transplanting.
5
0.5
Prepare stock solution and apply 3.4 to 6.8 fluid
ounces per cube as a drench to pre-wet cubes.
100 gallons will treat 3,800 plants and 1,900 plants
respectively.
0
0.5
Make a single application to the seeding tray one
week before transplanting. Apply as a drench to
thoroughly wet the growing medium. Do not use
any surfactant with this drench application.
Cucumber
Tomato
Transplant soil
drench
0.13 to 0.31
lb/acre
Bacterial spot, speck, Streptomycin
and canker
sulfate (Agrimycin) 17 WP
16 oz/100 gal
Pythium,
propamocarb
Phytophthora root rot hydrochloride
(Previcur Flex)
12.8 fl oz/ 100 gal water
Pythium
cyazofamid
(Ranman)
3 fl. oz/100 gal water
2.7 oz/100 gal
0.078 lb/100
gal water
557
0
Do not exceed 72 fluid ounces per acre of product
per year. Make no more than two consecutive
applications per season before alternating with
See label for cucrbit restictions.
Make no more than two consecutive applications
per season before alternating with fungicides that
Start weekly sprays at bud emergence.
Minimum Days
Commodity
Disease
Materials
Rate of Formulation
Rate of Active
Ingredient
Harvest
Rentry
Tomato
After transplanting
in greenhouse
Anthracnose, Early
blight, Powdery
mildew, Target spot,
Suppression of
Bacterial spot and
speck
famoxadone +
cymoxanil
(Tanos)
6 to 8 oz/acre
3 to 3 oz/ acre
3
4h
Tank mixing Tanos with a contact fungicide
appropriate for the targeted disease is required. Do
not apply more than 72 ounces per crop cycle.
Late Blight
propamocarb
hydrochloride
(Previcur Flex)
0.7 to 1.5 pt/acre
0.47 to 1.0 pt/
acre
5
0.5
Must tank mix Previcur Flex with mancozeb for
best control. Apply on a 7 to 10 day interval.
Anthracnose, Leaf
mold, Early blight,
Late blight, Septoria
leaf spot, Gray leaf
spot
mancozeb
(various)
maneb
(various)
1.5 to 3 lb/acre
1.2 to 2.4
lb/acre
5
5
Limit of 8 pounds product per acre per crop cycle.
See label
See label
1
1
Limit of 21 pounds Maneb per acre per crop cycle.
Early blight, Late
blight, Botrytis gray
mold, Target spot
potassium
phosphite +
chlorothalonil
(Catamaran)
5 to 7 pt/acre
2.8 to 3.9 pt/
acre
0
0.5
Phytotoxicity potential: do not combine Catamaran
with other pesticides, surfactants, or fertilizers.
Apply on a 7 to 10 day interval.
Use the higher rate for fruit rot diseases.
0.7 oz/acre
0
4 hr
0
0.5
Do not exceed 72 fluid ounces per acre of product
per year. Make no more than two consecutive
applications per season before alternating with
Early blight and other polyoxin D zinc
Alternaria diseases,
salt
Botrytis gray mold,
(Ph-D)
(Oso 5% SC)
Bacterial soft rot,
speck, and spot
treat 1360 sq ft
0.13 to 0.31
lb/acre
fixed copper
(various)
See label
See label
1 to 2 pt/acre
naturally
occurring
bacteriophage
0
0.5
Apply preventively 2 to 3 times per week. Can be
used as a drench in the irrigation water or as a
foliar spray. Do not mix AgriPhage with copperbased fungicides. The pH of water should be
above 5.
24.4 or 36.6 fl oz/acre
0.4 or 0.6 lb
ai/acre
1
4 hr
before alternating to a fungicide with a different
mode of action.
1 lb/acre
0.75 lb/acre
10
0.5
Spray stems of plants from the ground to a height
of 18 to 24 inches. Do not treat seedlings or new
transplants, as injury may occur. Make no more
than 4 applications per crop cycle.
11 to 14 oz/acre
6.9 to 8.8
oz/acre
0
0.5
After two applications alternate with another
fungicide with a different mode of action for two
applications. Do not apply to small tomatoes such
as cherry or grape-type tomatoes in the
greenhouse.
24.4 or 36.6 fl oz/acre
0.4 or 0.6 lb
ai/acre
1
4 hr
before alternating to a fungicide with a different
mode of action.
11 to 14 oz/acre
6.9 to 8.8
oz/acre
0
0.5
Registered for the Leveillula taurica species only.
After two applications alternate with another
fungicide with a different mode of action for two
applications. Do not apply to small tomatoes such
as cherry or grape-type tomatoes in the
greenhouse.
0.7 oz/acre
0
4 hr
Banda de
Lupinus albus
doce (BLAD);
(Fracture)
dicloram
(Botran) 75W or
75 WSB
cyprodinil +
fludioxonil
(Switch 62.5
WG)
Powdery mildew
6.2 oz/acre
penthiopyrad
(Fontelis)
Bacterial spot and
bacteriophage
speck Suppression of (AgriPhage)
bacterial canker
Botrytis (gray mold)
Banda de
Lupinus albus
doce (BLAD);
(Fracture)
cyprodinil +
fludioxonil
(Switch 62.5
WG)
formulation. Some products are OMRI-approved.
polyoxin D zinc
salt
(Ph-D)
(Oso 5% SC)
6.2 oz/acre
sulfur (various)
See label
See label
treat 1360 sq ft
0.13 to 0.31
lb/acre
0
0.5
Make no more than two consecutive applications
per season before alternating with fungicides that
12.8 fl oz/100 gal
8.5 fl oz/100
gal
5
0.5
Limit of 4 applications per crop cycle. Prepare
stock solution and apply 3.4 fluid ounces per cube
through drip irrigation for the first two weeks. After
2 weeks, apply 3.4 to 6.8 fluid ounces stock
solution per cube through the drip irrigation. 100
gallons will treat 3,800 plants in the first two weeks
and 1,900 plants in the following weeks.
penthiopyrad
(Fontelis)
Pythium and
propamocarb
(Previcur Flex)
558
formulation. Do not apply if temperatures will
exceed 90 degrees F for 2 days following
application or plant injury may occur. OMRIapproved.
Minimum Days
Commodity
Disease
Tomato
After transplanting
in greenhouse
(continued)
Pythium and
etridiazole
(Terramaster
(continued)
4EC2)
Materials
cyprodinil +
fludioxonil
(Switch
62.5WG)
Watermelon
seedlings
Gummy stem blight
polyoxin D zinc
salt (Oso 5SC)
thiophanatemethyl
(Topsin M)
Rate of Active
Ingredient
Rate of Formulation
Harvest
Rentry
6 to 7 fl oz/acre
2.7 to 3.1 fl
oz/acre
3
0
Limit of 27.4 Mix a 0.01% solution (6.5 ounces per
500 gallons) and apply through the drip irrigation
no sooner than 3 weeks after transplanting. NOTE:
Terramaster is NOT labeled for this use in AL,
GA, LA, or NC. There is the potential for
phytotoxicity if not mixed or applied correctly.
11 to 14 oz/acre
6.9 to 8.7
oz/acre
7
0.5
Apply when disease first appears. To prevent
resistance, make only one application per planting.
Use other products if additional applications are
needed.
3.75 to 13.0 fl. oz./acre
0.21 to 0.72
oz. a.i./acre
0
4 hr
Use high rate if disease develops.
0.5 lb/acre
0.25 lb/acre
1
0.5
Apply when disease first appears. To prevent
resistance, make only one application per
planting. Use mancozeb if additional applications
are needed.
Biorational and Biological Products for Greenhouse Disease Management
Table 10-59B. Biorational and Biological Products for Greenhouse Disease Management
Minimum Days
Rate of
Formulation
Rate of Active
Ingredient
0.04 to 0.08
qt/100 gal
Material
Disease
Bacillus subtilis strain QST 713
(Serenade, CEASE)
Target spot, Early blight,
Bacterial spot and speck,
Powdery mildew, Botrytis
gray mold
3 to 6 qt/acre
Bacillus amyloliquefaciens strain D
747
Bacterial spot and speck,
gray mold, powdery
mildew, early blight, ;ate
blight, various soilborne
diseases
Timber rot or White mold
(Sclerotinia)
0.25 to 3 lb/acre
(Contans WG)
Extract of
Reynoutria sachalinensis (Regalia)
Botrytis gray mold
Suppression of bacterial
canker
Milk (skim)
Viruses2 (ToMV, TMV)
Harvest
Reentry
0
4 hr
OMRI-listed. Begin applications prior to disease
development, and repeat at 5 to 10 day
intervals depending on the formulation.
0
4 hr
OMRI-listed.
0.75 to 1.5
oz/1,000 sq ft
applied to
growing medium
0.04 to 0.08
oz/1,000 sq ft
0
4 hr
OMRI-listed.
0.5-1.0% v/v
solution
—
0
4 hr
Apply preventatively in 25 to 100 gal per acre.
Repeat applications in 7 to 14 day intervals
depending on crop growth and disease
pressure.
5 lb/100 gal/100
sq yards
minimum 3.5%
protein
Until spray
dries
0
Spray plants until run-off. NOTE: Sooty mold
may develop on treated plants.
Dip hands every 5 minutes while handling
plants.
Dip tools for 1 minute. Do not rinse.
Neem oil
Leaf mold, Powdery
mildew, Botrytis gray mold
1:200 up to
1:100
solution
—
0
Until spray
dries
Streptomyces griseoviridis
(Mycostop)
Pythium, Rhizoctonia,
Phytophthora suppression
1 to 2 g/100 sq ft
of area enough
to water to cover
root zone
0.04 to 0.08
oz/1,000 sq ft
0
4 hr
sulfur
(various)
Powdery mildew
See label
See label
See label
See label
Trichoderma harzianum (Plant
Shield)
Pythium root rot, Botrytis
gray mold
See Remarks
See Remarks
0
0
1
2
Other formulations may be available.
Use in combination with seed treatments and sanaition practices.
559
OMRI-listed. Apply to just before runoff.
NOTE: Toxic to honeybees.
OMRI-listed.
See label. Rates vary depending on the
formulation. OMRI-listed. Do not apply if
temperatures will exceed 90 degrees F for 3
days following application as plant injury may
occur.
Suspend in 100 gallons water. Apply 50 to 100
gallons per 800 square feet area as a drench for
Pythium. Use 0.5 to 1 ounces per gallon water
for Botrytis as a foliar spray.
Table 10-60. Efficacy of Products for Greenhouse Disease Control
Bacterial Soft Rot
(Erwinia carotovora)
Bacterial Canker
(Clavibacter michiganense)
Botrytis Gray Mold
(Botrytis cinerea)
Early Blight (Alternaria solani)
Leaf Mold (Fulvia fulva)
Powdery Mildew
(Leveillula taurica)
Phytophthora Root Rot
(Phytophthora sp.)
Pythium Root Rot
(Pythium myriotylum)
Rhizoctonia Root Rot
Septoria Leaf Spot
(Septoria lycopersici)
Target Spot
(Corynespora cassicola)
Timber Rot (White Mold)
(Sclerotinia sclerotiorum)
acibenzolar-S-methyl (Actigard)
—
14
NC
F
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
bacteriophage (AgriPhage)
—
0
NC
P
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Bacillus subtilis (Rhapsody)
—
0
ND
ND
NC
P
P
ND
P
NC
NC
NC
ND
P
ND
BLAD (Fracture)
—
1
ND
NC
NC
F
ND
ND
F
NC
NC
ND
ND
ND
ND
boscalid (Endura)
7
0
ND
NC
NC
F
F
ND
NC
NC
NC
NC
ND
G
F
0
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
P
Product
Fungicide
F
Group
1
Coniothyrium minitans (Contans WG)
Preharvest Interval (Days)
Anthracnose
(Colletotrichum coccodes)
dicloran (Botran 75 WP)
14
10
NC
NC
NC
G
NC
NC
NC
NC
NC
NC
NC
NC
F
etridiazole (Terramaster)2
14
3
NC
NC
NC
NC
NC
NC
NC
F
F
ND
NC
NC
NC
famoxadone + cymoxanil (Tanos)
11 + 27
3
F
ND
P
ND
F
F
P
NC
NC
NC
F
F
ND
fenhexamide (Decree 50 WDG)
17
1
NC
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
M
0
P
F
F
P
F
P
P
NC
NC
NC
P
P
NC
mancozeb (various)
M
5
G
NC
NC
F
G
F
ND
NC
NC
NC
F
F
ND
neem oil (Trilogy, Triact 70)
—
0
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
7
0
P
NC
NC
F
F
F
P
NC
NC
NC
F
F
ND
Polyoxin D (Ph-D; Oso 5% SC)
19
0
F
NC
NC
F
F
ND
F
ND
ND
ND
ND
F
ND
propamocarb hydrochloride (Previcur Flex)
28
5
NC
NC
NC
NC
NC
NC
NC
F
F
NC
NC
NC
NC
R
9
1
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
Streptomyces griseoviridis (Mycostop)
—
0
NC
NC
NC
NC
NC
NC
NC
NC
F
F
NC
NC
NC
streptomycin sulfate (Agri-Mycin 17)
18
0
NC
F
F
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
sulfurP (various)
M
0
P
NC
NC
NC
NC
NC
F
NC
NC
NC
NC
NC
NC
Trichoderma harzianum (Plant Shield)
—
0
NC
NC
NC
NC
NC
NC
NC
NC
P
F
NC
NC
NC
hydrogen dioxide (Oxidate)
—
0
ND
ND
ND
ND
ND
ND
P
P
P
ND
ND
ND
ND
3
1
For use on transplants only.
P
Sulfur may be phytotoxic; follow label carefully.
F
R
— Indicates the product has not been classified into a group.
3
560
Seed Treatments
Seed sanitation to eradicate bacterial or viral plant pathogens: When treating vegetable seeds, it is critical to follow the directions
exactly, because germination can be reduced by the treatment and/or the pathogen may not be completely eliminated. The effect of a
treatment on germination should be determined on a small lot of seeds prior to treating large amounts of seed. Treatments should not be
applied to: 1) pelleted seed, 2) previously treated seed, or 3) old or poor quality seed. A protective fungicide treatment (see below) can be
applied to the seed following treatment for bacterial pathogens.
Seed treatments to prevent damping off diseases: Most commercially available vegetable seeds come treated with at least one
fungicide and/or insecticide. Vegetable producers who would like to apply their own seed treatment should purchase non-treated seed.
While many fungicides are labeled for use on vegetable seed, most fungicides are restricted to commercial treatment only and should not
be applied by producers. Labeled fungicides can be applied to seed following treatment for bacterial pathogens (see above). Do not use
fungicide treated seed for food or feed.
HOT WATER TREATMENT
By soaking seed in hot water, seedborne fungi and bacteria can be reduced, if not eradicated, from the seed coat. Hot water soaking will
not kill pathogens associated with the embryo nor will it remove seedborne plant viruses from the seed surface.
1. Place seed loosely in a weighted cheesecloth or nylon bag.
2. Warm the seed by soaking it for 10 minutes in 100 degree Fahrenheit (37 Celsius) water.
3. Transfer the warmed seed into a water bath already heated to the temperature recommended for the vegetable seed being treated.
The seeds should be completely emerged in the water for the recommended amount of time (see table bellow). Agitation of the water
during the treatment process will help to maintain a uniform temperature in the water bath.
4. Transfer the hot water treated seed into a cold-water bath for five minutes to stop the heating action.
5. Remove seed from the cheesecloth or nylon bag and spread them evenly on clean paper towel or a sanitized drying screen to dry. Do
not dry seed in areas where fungicides, pesticides or other chemicals are located.
6. Seed can be treated with a labeled fungicide to protect against damping off pathogens.
CHLORINE BLEACH TREATMENT
Treating seeds with a solution of chlorine bleach can effectively remove bacterial pathogens and some viruses (i.e. Tobacco Mosaic
Virus) that are borne on the surface of seeds.
1. Add 1 quart (946 ml) of Clorox® bleach to 5 quarts (4.7 L) of potable water.
2. Add a drop or two of liquid dish detergent or a commercial surfactant such as Activator 90 or Silwet to the disinfectant solution. Add
seed to the disinfectant solution (1 pound of seed per 4 quarts of disinfectant solution) and agitate for 1 minute.
3. Prepare fresh disinfectant solution for each batch of seeds to be treated.
4. Rinse the seed in a cold water bath for 5 minutes to remove residual disinfectant.
5. Spread seeds evenly on clean paper towel or a sanitized drying screen to dry. Do not dry seed in area where fungicides, pesticides, or
other chemicals are located.
HYDROCHLORIC ACID TREATMENT
Tomato seed can be treated with a dilute solution of hydrochloric acid (HCl) solution to eliminate seedborne bacterial pathogens such as
Xanthomonas spp. (Bacterial leaf spot), Pseudomonas syringae pv. tomato (Bacterial speck) and Clavibacter michiganensis subsp.
michiganensis (Bacterial canker). Hydrochloric acid can also be used to remove TMV from the surface of tomato seed. Do not use HCLtreated seed for food or animal feed.
1. Prepare a 5% solution of HCl by adding one part acid to 19 parts potable water. Prepare the acid solution in a well-ventilated area and
avoid direct skin contact with the acid.
2. Soak seeds for 6 hours with gentle agitation.
3. Carefully drain the acid off of the seed and rinse seed under running potable water for 30 minutes. Alternatively, rinse the seeds 10 to
12 times with potable water to remove residual acid.
TRISODIUM PHOSPHATE TREATMENT
Tomato seed can be treated with trisodium phosphate (TSP) to eradicate seed-transmitted TMV. Do not use TSP-treated seed for food
or animal feed.
1. Prepare a 10% solution of TSP (1 part TSP in 9 parts potable water). Trisodium phosphate is available at most home supply or paint
stores. Avoid direct skin contact with the TSP solution.
2. Soak seed for 15 minutes in the disinfectant solution.
3. Rinse the seed in a cold water bath for 5 minutes to remove residual disinfectant.
TESTING SEED GERMINATION AFTER SEED TREATMENTS
1. Randomly select 100 seeds from each seed lot.
2. Treat 50 seeds using one of the sanitizers described above.
3. After the treated seed has dried and before application of a protectant fungicide, plant the treated and non-treated seed separately in
flats containing planting mix according to standard practice. Label each group as treated or non-treated.
4. Allow the seeds to germinate and grow until the first true leaf appears (to allow for differences in germination rates to be observed).
5. Count seedlings in each group separately.
6. Determine the percent germination for each group: # seedlings emerged ÷ # seeds planted x 100.
7. Compare percent germination between the treated and non-treated groups. Percent germination should be within 5% of each other.
561
Table 10-61. Recommended Temperatures and Treatment Times for Hot
Water Disinfestation of Vegetable Seed
Water Temperature
(F/C)
Soaking Time
(Minutes)
Broccoli
122/50
20 to 25
Brussels sprout
122/50
25
Cabbage
122/50
25
Carrot
122/50
15 to 20
Cauliflower
122/50
20
Celery
122/50
25
Chinese cabbage
122/50
20
Collard
122/50
20
Cucumber1
122/50
20
Eggplant
122/50
25
Garlic
120/49
20
Kale, Kohlrabi
122/50
20
Lettuce
118/48
30
Mint
112/44
10
Mustard, Cress, Radish
122/50
15
Onion
115/46
60
Pepper
125/51
30
Rape, Rutabaga
122/50
20
Shallot
115/46
60
Spinach
122/50
25
Tomato
122/50
25
Turnip
122/50
20
Vegetable Crop
1
Cucurbits other than cucumbers can be severely damaged by hot water treatment and should be disinfested using chlorine bleach.
Maxim 4FS (fludioxonil)
Maxim MZ (fludioxonil + mancozeb)
MetaStar 2E AG (metalaxyl)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Beans, Snap
X
X
X
X
Beans, Lima
X
X
X
X
Beets
X
X
X
Broccoli
X
Carrots
X
X
Celery
X
4
4
M3
7+M3
1+M3
11+ 4
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Cole Crops
X
X
X
X
X
X
X
X
Cucumbers
X
X
X
X
X
X
X
X
562
7+M3
X
Chinese Cabbage
X
Trilex (trifloxystrobin + metalaxyl)
Emesto Silver (penflufen + prothioconazole)
4
Tops MZ-Gaucho
(thiophanate-methyl + mancozeb)
Dynasty (azoxystrobin)
12+M3
4
Vitaflo-280 (carboxin + thiram)
Dividend Extreme
(difenoconozole + mefenoxam)
12
4
Spirato 480 FS (fludioxonil)
Dyna-Shield (fludioxonil)
3
4
Sebring 480S (metalaxyl)
Cruiser Maxx Potato
(thiamethoxam + fludioxonil)
11
4
Cruiser Maxx (thiamethoxam +
mefenoxam + fludioxonil)
3+4
M3
Fungicide
GroupF
MonCoat MZ (flutolanil + mancozeb)
Captan 400 (captan)
12
Belmont 2.7FS (metalaxyl)
12
Apron (mefenoxam)
4+12
Acquire (metalaxyl)
M3
Allegiance (metalaxyl)
14
42-S Thiram (thiram)
Botran 75W (dicloran)
Table 10-62. Products for Seed Treatment
X
X
X
X
X
X
Botran 75W (dicloran)
Captan 400 (captan)
Cruiser Maxx (thiamethoxam +
mefenoxam + fludioxonil)
Cruiser Maxx Potato
(thiamethoxam + fludioxonil)
Dyna-Shield (fludioxonil)
Dividend Extreme
(difenoconozole + mefenoxam)
Dynasty (azoxystrobin)
Emesto Silver (penflufen + prothioconazole)
Maxim 4FS (fludioxonil)
Maxim MZ (fludioxonil + mancozeb)
MetaStar 2E AG (metalaxyl)
MonCoat MZ (flutolanil + mancozeb)
Spirato 480 FS (fludioxonil)
Vitaflo-280 (carboxin + thiram)
Tops MZ-Gaucho
(thiophanate-methyl + mancozeb)
Trilex (trifloxystrobin + metalaxyl)
X
Belmont 2.7FS (metalaxyl)
Eggplants
Apron (mefenoxam)
M3
Acquire (metalaxyl)
Fungicide
GroupF
Allegiance (metalaxyl)
42-S Thiram (thiram)
Table 10-62. Products for Seed Treatment
4
4
4
4
14
M3
4+12
12
12
3+4
11
3
12
12+M3
4
7+M3
4
4
M3
7+M3
1+M3
11+ 4
X
X
X
Garlic
X
X
X
X
X
X
X
X
X
Greens, Mustard
X
X
X
X
X
X
X
X
Greens, Turnip
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Horseradish
Leeks
X
X
Lettuce
X
X
X
X
Muskmelons
X
X
X
X
Okra
X
X
Onions, Dry
X
X
X
X
X
X
X
Onions, Green
X
X
X
X
X
X
X
Parsley
X
X
X
X
X
X
X
Parsnips
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Peppers
X
X
X
X
X
X
X
X
X
X
X
Pumpkins
X
X
X
X
X
X
X
X
X
X
X
Radish
X
X
X
X
X
X
X
X
X
X
Spinach
X
X
X
X
X
X
X
X
Squash, Summer
X
X
X
X
X
X
X
X
X
X
Squash, Winter
X
X
X
X
X
X
X
X
X
X
Sweet Corn
X
X
X
X
X
X
X
X
X
X
X
X
X
Tomatoes
X
X
X
X
X
X
X
X
X
X
X
Watermelon
X
X
X
X
X
X
X
X
X
X
X
X
X
Sweet Potatoes
White Potatoes
(Irish)
F
X
X
X
X
Peas
X
X
X
X
X
X
X
X2
X
X3
X
X
X
X
X3
X
X
X
X
X
X
X
X4
563
X
Table 10-63. Biocontrol Agents and Disinfestants Registered for Seed Treatment
X
X
X
X
X
X
X
Beets
X
X
X
X
Broccoli
X
X
Carrots
X
X
X
X
Celery
X
X
Chinese Cabbage
X
X
Cole Crops
X
X
Cucumbers
X
X
Eggplants
X
X
Garlic
X
X
Greens, Mustard
X
X
X
X
Greens, Turnip
X
X
X
X
Horseradish
X
X
Leeks
X
X
X
Lettuce
X
X
X
X
X
Muskmelons
X
X
Okra
X
X
Onions, Dry
X
X
X
X
Onions, Green
X
X
X
X
Parsley
X
X
X
Parsnips
X
X
Peas
X
X
X
Peppers
X
X
X
Pumpkins/Winter
squash
Radish
X
X
X
X
X
Spinach
X
X
X
Squash, Summer
X
X
X
Sweet Corn
X
X
X
Sweet Potatoes
X
Tomatoes
X
X
Watermelon
X
X
White Potatoes (Irish)
Trisodium phosphate (TSP)
Yield Shield
(Bacillus pumilus GB34)
X
X
Hydrochloric acid (HCl)
T-22 Planter Box
(Trichoderma harzianum)
X
Beans, Lima
Hot water
Mycostop
(Streptomyces griseoviridis
K61)
Beans, Snap
Crop
Clorox
Kodiak HB
(Bacillus subtilis GB03)
Disinfestants
Actinovate STP
(Streptomyces lydicus
WYEC 108)
Biocontrol Agents
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
564
X
Sanitizing
Follow manufacturers label in all cases. The objective of treating soil in greenhouses and plant beds is to reduce to acceptable levels
weeds, nematodes, insects, fungi, and bacteria in the soil that cause damage and disease in plants. This is critical for the successful
production of greenhouse crops and healthy plants for field use.
Follow general procedures for successful soil fumigation as outlined in commercial literature. Do not overtreat soil. Treated soils might
develop nutrient imbalance and be especially susceptible to secondary infestation of disease-causing agents. Always follow directions on
the label on the pesticide containers.
CAUTION: Some products or treatments cannot be used for crops.
Table 10-64. Sanitizing Greenhouses and Plant Beds (Soils and Beds)
Material
Formulation
Application
Nematodes
Insects
Bacteria
Fungi
Viruses
Relative Effectiveness
Weeds
Rate to Use
dry heat
180 degrees F for 30 min
Place small quantities in oven.
G
G
G
G
G
P
Metamsodium
(Metam
CLR,
Sectagon,
Vapam)
11 to 22 oz/100 sq ft
(37.5 to 75 gal/acre)
Inject 4 to 6 in. deep, space chisels 6
in. apart. Cover with plastic 7 to 15
days. Aerate 2 to 4 weeks.
F
G
G
F
G
P
All crops, all pests. Long waiting period
after fumigating in cold soil (under 60
degrees F).
11 to 22 oz/100 sq ft
(37.5 to 75 gal/acre)
Dilute with sufficient water and
sprinkle uniformly to penetrate 2 in.
into soil. A hose proportioner may be
used. Cover with plastic 7 to 15 days.
Aerate 2 to 4 weeks.
solarization
140 degrees F, 4 to 8 hr/day
for 7 days
Pots, benches, tools, shallow soil,
structures
G
F
G
F
G
P
Close greenhouse during hot, sunny
days in summer for at least 1 week.
Greenhouse must reach 140 degrees F
or higher each day. Remove debris and
heat-sensitive materials and keep
greenhouse and contents moist. Will not
control TMV or pests 0.5 inch or deeper
in soil.
steam
Heat soil from 180 degrees to
200 degrees F (30 min) 6 in.
deep
10.3 to 17.1 gal/acre See
label for herbicide rates
Perforated pipes on or in soil, cover
with tarp
G
G
G
G
G
F
All crops, most pests.
Inject 10 to 12 in. deep with chisels
spaced 12 in. apart. Seal the soil by
packing, wetting, or covering with
plastic mulch.
G
G
F
F
G
P
Use higher rates for heavy soils. See
label for organic soils.
7 to 16 oz/100 sq ft (25 to 54
gal/acre) See label for
herbicide rates
Inject 4 to 6 in. deep, space chisels
12 in. apart. Cover 1 week, aerate 3
weeks.
G
G
F
P
P
P
Not for greenhouse use.
Telone C-17
+ herbicide
Telone II +
herbicide
Use and Remarks
NOTE: Follow manufacturer’s label in all cases
Table 10-65. Sweetpotato Storage House Sanitation
Material
Rate per 1,000 Cubic Feet of Space
Methods and Remarks
Heat
140 degrees F 4 to 8 hr/day for 7 days
or 180 degrees F for 30 minutes
See remarks under sanitizing greenhouses. The storage house, ventilation system, and equipment must be very clean
and moist during the procedure. Caution: rot-causing organisms inside a drain will probably not be exposed to lethal
temperature.
565
Table 10-66. Water, Produce, and Equipment Sanitation
Medium
Sanitizer
Wash water,
calcium hypochlorite (Aquafit)
dump tank water,
or vegetable wash chlorine dioxide
(Harvest Wash, ProOxine, Anthium
water*
Dioxide, Adox 750)
Equipment**
(conveyors,
scrubbers, plastic
harvest
containers,
peelers, field
equipment, etc.)
Contact
Time
(minutes)
Target Rate (ppm)
Formulation
2
25
1 oz/200 gal
1 to 10
3 to 5
Varies between
products; see product
labels.
chlorine gas (99.9%)
—
Contact supplier for rates.
hydrogen dioxide or peroxide
(StorOx)
—
Varies based on method of application.
hydrogen peroxide + peroxyacetic acid
(BioSide HS)
(Keystone Fruit and Vegetable Wash)
(PAA Sanitizer FP)
1
1.5
0.75
(Perasan A)
(SaniDate 5.0)
—
0.75
3 to 3.5 fl oz/16 gal
1 oz/20 gal
5.9 to 20.9 fl oz/100 gal
Tsunami 100
—
30 to 80
2.5 to 6.7 fl oz/100 gal
(Victory)
(VigorOx 15 F&V)
1.5
—
80
5 to 85 peroxyacetic acid
(postharvest pathogens)
45 peroxyacetic acid (foodborne
pathogens)
1 fl oz/16.4 gal
1 fl oz/16.4 gal
1 fl oz/16.4 gal
—
—
150
150
2.9 ml/L
1.18 ml/L
sodium hypochlorite
(Agclor 310)
(Dibac)
(Dynachlor)
(Extract-2)
(JP Optimum CRS)
(Maxxum 700)
(Zep FS Formula 4665)
—
2
2
2
2
2
65 to 400
25
25
25
25
25
25
0.5 to 3 gal/1000 gal
1 oz/20 gal
5 oz/200gal
5 oz/200gal
0.75 oz/10 gal
8 oz/200gal
5 oz/200gal
2
600 ppm (porous surfaces)
3 oz/20 gal
1 to 10
10 to 20 (porous or non-porous
surfaces)
500 (ceilings, floors and walls)
Varies between
products; see product
labels.
—
1 to 3 ppm
(1:300 to 1:100)
(non-porous surfaces)
0.5 to 1.25 fl oz/gal
hydrogen peroxide + peroxyacetic acid
(BioSide HS)
1 or more
93-500 peroxyacetic acid
0.7 to 3.8 fl oz/10 gal
(PAA Sanitizer FP)
1 or more
hydrogen dioxide or peroxide
(StorOx)
Contact times vary depending on the
governing sanitary code. Post-sanitation
rinse is not necessary.
0.54 fl oz/16 gal
sodium hypochlorite
(5.25%)
(12.75%)
chlorine dioxide
(ProOxine, Sanogene, Anthium
Dioxide, Adox 750)
Maintain water pH between 6.0 and 10.
Restricted to large operations. Requires
automated and controlled injection
systems. NOTE: Chlorine dioxide is
explosive.
Restricted to very large operations.
Requires automated and controlled
injection systems. Regulated by both the
EPA (water) and FDA (food contact
surfaces).
80 peroxyacetic acid
88 to 130 (peroxyacetic acid, nonporous surfaces)
calcium hypochlorite
(Aquafit)
1
88 to 130 peroxyacetic acid (nonporous surfaces)
1 to 1.5 fl oz/5 gal
(Perasan A)
(SaniDate 5.0)
(VigorOx 15 F&V)
1
1
~128
1.6 fl oz/5 gal
3.1 fl oz/50 gal
sodium hypochlorite (5.25%)
2
2
—
100 to 200 (non-porous surfaces)
600 (porous surfaces)
1000 to 2000 (floors and walls)
1.9 to 3.8 ml/L
11.4 ml/L
1900 to 3800 ml/L
sodium hypochlorite (12.75%)
2
2
—
100 to 200 (non-porous surfaces)
600 (porous surfaces)
1000 to 2000 (ceilings, floors and
walls)
0.78 to 1.56 ml/L
4.68 ml/L
780 to1560 ml/L
sodium hypochlorite
(Agclor 310, Dibac, Dynachlor,
Extract-2, JP Optimum CRS, Maxxum
700, Zep FS Formula 4665)
1
quaternary ammonia (DDAC)
(KleenGrow)
10
Maintain water pH between 6.0 and 7.5.
Noxious chlorine gas can be released
when the pH drops below 6.0. NOTE:
Household bleach is NOT registered
for use with fresh produce.
Monitor residual chlorine or change
solution when it is visibly dirty. Rinse
produce with potable water prior to
packing.
Do not rinse or soak equipment overnight.
Apply until run-off. Requires a thorough
post-sanitation rinse with potable water.
Contact time varies depending on the
governing sanitary code. Consult labels
as some products require a postdisinfection rinse with potable water.
1 to 6.1 oz/6 gal
Noxious chlorine gas can be released
when the pH drops below 6.0. Porous
surfaces require a thorough postdisinfection rinse with potable water.
Allow all surface types to air dry prior to
re-use.
Varies based on method of application.
—
1 fl oz/gal
Allow surfaces to air dry. If treated
surfaces will contact food, thoroughly
rinse surfaces with potable water.
* Recommendations are for potable water only. Recommended rates are not effective in reducing pathogen populations in non-potable water (i.e. surface or
ground water).
** Recommendations are for potable water only. Always wash off organic debris and soil with water prior to sanitizing. Rates and contact time are
dependent on surface type.
566
Generic and Alternative Fungicides
Table 10-67. Generic and Alternative Fungicides for Use on Vegetable Crops
Common Name
Trade Name(s)
chlorothalonil
Bravo Ultrex (Syngenta)
Bravo Weather Stik (Syngenta)
Bravo Zn (Syngenta)
Chloronil 720 (Syngenta) Chlorothalonil 720 SC (Arysta) Echo 720 (SipcamAdvan) Echo 90DF (SipcamAdvan) Echo Zn (SipcamAdvan) Equus
500 Zn (MANA)
Equus 720 SST (MANA)
Equus DF (MANA)
Initiate 720 (Loveland Products)
Initiate ZN (Loveland Products)
copper hydroxide
Champ DP Dry Prill (Nufarm)
Champ Formula 2 Flowable (Nufarm)
Champ WG (Nufarm)
Champion Wettable Powder (Nufarm)
Kentan DF (Isagro USA)
Kocide 2000 (DuPont)
Kocide 3000 (DuPont) Nu Cop 3L (Albaugh) Nu Cop 50DF (Albaugh)
NU Cop 50WP (Albaugh)
Nu Cop HB (Albaugh)
copper sulfate (basic)
Basic Copper 53 (Albaugh)
Copper Z 4/4 (Helena)
Cuprofix Ultra 40 Disperss (UPI)
Cuproxat (NuFarm)
fosetyl-Al
Aliette WDG Fungicide (Bayer)
Linebacker WDG (NovaSource)
fludioxonil
Mamim 4FS (Syngenta)
Spirato 480 FS (Nufarm)
iprodione
Enclosure 4 (Devgen) Iprodione 4L AG (Arysta) Meteor (UPI)
Nevado 4F (MANA)
Rovral 4 Flowable Fungicide (Bayer)
Rovral 4 Flowable (FMC)
mancozeb
Dithane F-45 Rainshield (Dow) Dithane M-45 (Dow)
Koverall (Cheminova) Manzate Flowable (UPI) Manzate Max (UPI) Manzate Pro-Stick (UPI) Penncozeb 4FL (UPI) Penncozeb 75DF (UPI)
Penncozeb 80WP (UPI)
Roper DF Rainshield (Loveland Products)
mefenoxam
Ridomil Gold GR (Syngenta) Ridomil Gold SL (Syngenta) Ultra Flourish (Nufarm)
myclobutanil
Rally 40WSP (Dow)
Sonoma 25EW AG (Albaugh)
Sonoma 40WSP (Albaugh)
pentachloronitrobenzene
Blocker 4F
phosphite, potassium
Helena Prophyt (Helena)
Confine Extra (Winfield Solutions)
Reveille (Helena)
phosphite
(mono- and dibasic salts)
Phostrol (Nufarm)
phosphorous acid
(mono- and dipotassium salts)
Alude (Cleary)
Fosphite Fungicide (JK Biotech)
Fungi-Phite (Plant Protectants)
K-Phite 7LP AG (Plant Food Systems)
Rampart (Loveland Products)
propamocarb hydrochloride
Previcur Flex (Bayer)
Promess (Agriphar)
propiconazole
AmTide Propiconazole 41.8% EC (AmTide)
Bumper 41.8 EC (MANA)
Bumper ES (MANA)
567
Table 10-67. Generic and Alternative Fungicides for Use on Vegetable Crops
Common Name
Trade Name(s)
Propiconazole (continued)
Fitness (Loveland Products)
Propi-star EC (Albaugh)
Propicure 3.6F (Direct Ag Source)
Propimax EC (Dow AgroSciences)
Shar-Shield PPZ (Sharda USA)
Tilt (Syngenta)
Topaz (Winfield Solutions)
Willowood Propicon 3.6EC (Willowood USA)
sulfur
Cosavet-DF (Sulphur Mills Limited)
CSC 80% Thiosperse (Martin Resources) CSC Dusting Sulfur (Martin Resources) CSC Thioben 90 (Martin Resources) CSC Wettable Sulfur
(Martin Resources)
Dusting Sulfur (Loveland Products; Wilbur-Ellis) First Choice Dusting Sulfur (Loveland Products) IAP Dusting Sulfur (Independent Agribusiness
Professionals)
InteGro Magic Sulfur Dust (InteGro Inc.)
Kumulus DF (Arysta) Liquid Sulfur Six (Helena) Micro Sulf (Nufarm)
Microfine Sulfur (Loveland Products)
Microthiol Disperss (UPI)
Special Electric Sulfur (Wilbur-Ellis)
Spray Sulfur (Wilbur-Ellis)
Sulfur 6L (Arysta) Sulfur 90W (Drexel) Sulfur DF (Wilbur-Ellis)
That Flowable Sulfur (Stoller Enterprises)
Thiolux (Loveland Products)
Wettable Sulfur (Helena)
Yellow Jacket Dusting Sulfur (Georgia Gulf Sulfur)
Yellow Jacket Wettable Sulfur (Georgia Gulf Sulfur)
tebuconazole
AmTide TEBU 3.6F (AmTIde)
Barrier (Real Farm Technologies)
Folicur (Bayer)
Monsoon (Loveland Products) Onset 3.6L (Winfield Solutions) Orius 3.6 F (MANA)
Solera Tebuconazole 3.6F (Solera)
Tebu-Crop 3.6F (Sharda USA)
Tebucon 3.6F (Repar Corp.)
TebuStar 3.6L (Albaugh) Tebuzol 3.6F (UPI) Toledo 3.6F (Rotam)
thiophanate-methyl
Incognito 4.5 F (MANA)
Incognito 85 WDG (MANA) Thiophanate Methyl 85 WDG (MANA) T-Methyl 4.5F (Nufarm)
T-Methyl 70W WSB (Nufarm)
Topsin 4.5FL (UPI)
Topsin M 70 WDG (UPI)
568
Table 10-68. Biopesticides and Fungicide Alternatives for Vegetables
Greenhouse
Use
OMRI-Listed Comments
Active Ingredient
Product
Crops
Target Diseases/Pests
Acibenzolar-S-methyl
Actigard
chili pepper, cucurbits, lettuce,
onion, spinach, tomato
bacterial blights, downy mildew,
powdery mildew (crop
dependent, see label)
No
No
Do not apply to plants
stressed by heat, cold, or
moisture extremes.
Bacillus pumilus QST2808
Ballad Plus,
Sonata
Cole crops, cucurbits, legumes,
bulb vegetables, root crops,
pepper, tomato, sweet corn
early blight, late blight, downy
mildew, powdery mildew, leaf
blights, rust
Yes
Yes
Ballad Plus can be used on
sweet corn only.
Bacillus subtilis GB03
Companion
most vegetables (see label)
root diseases
Yes
Yes
Bacillus subtilis MBI 600
Subtilex NG
cucurbits, eggplant, pepper,
tomato
root diseases, powdery mildew
Yes
No
Bacillus subtilis QST713
Cease,
Serenade Max
Cole crops, leafy vegetables,
legumes, cucurbits, pepper,
tomato
downy mildew, powdery mildew,
leaf blights
Yes
Yes
Contans WG
Sclerotinia sclerotiorum (white
mold, timber rot, drop)
Yes
Yes
Apply to soil or potting
medium.
Gliocladium cantenulatum
PreStop
Biofungicide
seed rots, root diseases,
Botrytis stem canker
Yes
Gliocladium virens GL-21
SoilGard 12G
seed rots, root diseases
Yes
Yes
Do not apply in conjunction
with chemical fungicides.
Hydrogen peroxide
(Oxidate)
Oxidate,
Terracide
root diseases, leaf blights
Yes
Yes
Myrothecium verrucaria
DiTera DF
Cole crops, cucurbits, eggplant,
leafy vegetables, legumes,
pepper, root and tuber
vegetables, tomato
nematodes
Yes
Yes
Neem oil
Trilogy
vegetables
foliar diseases
Yes
Yes
Oils from cottonseed, corn,
and garlic
Mildew Cure
tomato, cucurbits
powdery mildew
Yes
Oils from clove, rosemary,
and thyme
Sporatec
powdery mildew, fungal leaf
blights
Yes
Yes
Addition of a spray adjuvant
(spreader or penetrant) is
recommended.
Oil from soybean
Oleotrol-M
Botrytis gray bold, downy
mildew, powdery mildew
Yes
Yes
Tank-mix with a spreadersticker.
Paecilomyces lilacinus
MeloCon WG
nematodes
Yes
Yes
Phage
AgriPhage
bacterial spot, speck
Yes
No
Phosphorous compounds
Alude, Fosphite
Fungi-Phite, Phostrol,
ProPhyt, Rampart
most vegetables downy mildew, powdery mildew,
(see label)
leaf blights
Yes
No
Potassium bicarbonate
Armicarb,
Kaligreen,
Milstop
blights
Yes
Potassium salts of fatty
acids
M-Pede
powdery mildew
Yes
Potassium silicate
Sil-MATRIX
powdery mildew, Botrytis
gray mold
Yes
Yes
Tank-mix with a non-ionic
surfactant for best results.
Pseudomonas chloroaphis
Ateze
stem, root diseases
Yes
No
Greenhouse use only.
Reynoutria sachalinensis
Regalia
blights
Yes
Yes
First application should be
made before symptoms
appear.
Streptomyces griseoviridis
Mycostop
seedling, root, and stem rots
Yes
Yes
Can be added to potting mix
or applied in-furrow to field
soil.
Streptomyces lydicus
Actinovate AG
seedling, root, and stem rots;
foliar blights
Yes
Yes
Can be used as a soil or foliar
treatment.
Streptomyces lydicus +
iron, molybdenum, and
humic acid
Actino-Iron
Yes
Yes
Soil treatment
Trichoderma harzianum
T-22,
RootShield,
PlantShield
Cole crops, eggplant, leafy
vegetables, pepper, tomato
Yes
Yes
Can be added to potting mix
or applied in-furrow to field
soil.
Trichoderma viride
Binab
most vegetables
Yes
No
569
Apply to soil or potting
medium; use as a foliar spray
for powdery mildew.
May cause leaf burn; test a
small number of plants before
spraying entire crop.
May cause leaf burn; test a
small number of plants before
spraying entire crop.
Yes
(Kaligreen,
Milstop)
pH of spray solution should
not be below 7.0.
Do not mix with surfactants or
apply to stressed plants to
avoid plant injury.
Fungicide Resistance Management
Fungicides are organized according to FRAC groups, chemical structure and Mode of Action (MoA). Fungicides within a given FRAC
group control fungi in a similar manner and share the same risk for fungicide resistance development. Some fungicides are referred to as
high- or at-risk fungicides because of their specific MoAs and therefore have a high risk for resistance development. Groups of
fungicides, such as the QoI’s (FRAC group 11) or Phenylamides (FRAC group 4) are prone to resistance development due to very
specific MoAs. Fungicides in high- or at-risk groups should be rotated and/or tank-mixed with broad spectrum protectant fungicides
(FRAC group M3 or M5) to delay the development of resistant strains of fungi. For more information on fungicide resistance management
see: http://www.frac.info/
Table 10-69. Fungicide Modes of Action for Fungicide Resistance Management
FRAC
Code
Fungicide
Resistance Risk
Group Name
Example Active ingredients
Example Products
P1
Unknown
Benzo-thiadiazole (BTH)
Acibenzolar-S-methyl
Actigard
M1
Low
Inorganic copper
Fixed copper
Copper (various)
M2
Low
Inorganic sulfur
Sulfur
Sulfur (various)
M3
Low
Dithiocarbamates
Mancozeb
Mancozeb (various)
M5
Low
Chloronitriles
Chlorothalonil
1
High
Methyl benzimidazole carbamates (MBC)
Thiophanate-methyl
Topsin M
2
Medium to high
Dicarboximides
Iprodione
Rovral
3
Medium
Demethylation inhibitors (DMI)
Triflumizole
Myclobutanil
Procure
Rally
4
High
Phenylamide
Mefenoxam
Ridomil Gold
7
Medium to high
Succinate dehydrogenase inhibitors (SDHI)
Boscalid
Penthiopyrad
Endura
Fontelis
9
Medium
Anilino-pyrimidines (AP)
Pyrimethanil
Scala
11
High
Quinone outside inhibitors (QoI)
Pyraclostrobin
Trifloxystrobin
Azoxystrobin
Cabrio
Flint
Quadris
12
Low to medium
Phenylpyrroles (PP)
Fludioxinil
Maxim
13
Medium
Aza-naphthalenes
Quinoxyfen
Quintec
14
Low to medium
Aromatic hydrocarbons (AH)
Dichloran
Botran
21
Medium to high
Quinone inside Inhibitors (Qil)
Cyazofamid
Ranman
22
Low to medium
Benzamides (toluamides)
Thiazole carboxamide
Zoxamide
Gavel (contains zoxamide and
mancozeb)
27
Low to medium
Cyanoacetamide-oximes
Cymoxanil
Curzate
28
Low to medium
Carbamates
Propamocarb
Presidio
29
Uknown
Dinitroanilines
Fluazinam
Omega
33
Low
Phosphonates
Fosetyl A!
Aliette
40
Low to medium
Carboxylic acid amides (CAA)
Dimethomorph
Mandipropamid
Forum
Revus
43
High
Benzamides
Fluopicolide
Presidio
570

North Carolina Agricultural Chemicals Manual

Transcription

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