RONALDO

RONALDO
RED PONTIAC X RZ- 84- 67
General production advice ware potatoes
* Big size tubers
* High yield
* Low nitrogen requirement
* Bright, dark red skin
Characteristics
Cooking type
Maturity
Yield mature
Tuber size
Tuber shape
Number of tubers
Flesh after cooking
Skin colour
Berries
AB - Slightly firm
58 Medium late
121 Very high
85 Large
Oval
9-11
Light yellow
Red
No berries
67
Dormancy period
70
Emergence
60
Metribuzin sensitivity
80
Foliage development
10
Internal bruising
Little Potato disorder
87
Dry matter content/Starch
UWW / Specific gravity
Medium
Normal
Sensitive
Very strong
Little sensitive
Not sensitive
18% / 12,2%
325 / 1,069
Spraing
Foliage Blight
Tuber Blight
Common scab
Powdery scab
PVY
Yntn tuber tolerance
Highly resistant
Slightly susceptible
Very susceptible
Slightly susceptible
Susceptible
Very susceptible
Tolerant
Plant populations
Seed size
Row distance
Plant population/ha 75 cm 90 cm
- 28/35
- 35/50
- 50/60
53.000
48.000
42.000
25
28
32
21
23
26
Fertilizer
PCN Resistance
99
55
49
56
53
30
99
Type
Ro1 Ro2/3 Pa2 Pa3
9
2
Value
Wart disease
Fysio
F1
F2
F6 F18
3
3
3
1
Value
Italic: own analysis/no official analysis
- Adapt fertilization to soil analysis.
- Nitrogen (N): 200 kg N/ha inclusive of soil supply.
- Apply nitrogen all at once.
- Do not apply potassium chloride (KCl) less than 6
weeks before planting, as late applications could
induce lower dry matter.
- Potassium and phosphate fertilization as standard
advice.
- Pay attention to the amount of organic fertilizer to
avoid later mineralisation.
HZPC takes no responsibility for any harmful consequences that might eventually occur when using this information.
www.hzpc.com 4 Nov 2016
RONALDO
RED PONTIAC X RZ- 84- 67
General production advice ware potatoes
Pre-treatment and planting
- RONALDO has a long dormancy.
- Pre-sprouting helps to advance the growth.
- Seed should be removed from the cold store in time before planting.
- RONALDO can be grown on all soil types.
- Avoid soils with too high risk of powdery scab.
- Take care of a good volume ridge to prevent green tubers.
Growing attention points
- Foliage development is strong, keep nitrogen low.
- Emergence is normal.
- The use of metribuzin is recommended before emergence. When applying post emergence,
use the low dose system.
- Too much irrigation late in the season increases the dominance of lenticels.
- Use a robust Phytophthora programme, to prevent foliage and tuber blight
- Preventive spraying against Phytophthora is advised.
- Use later in the season products with strong tuber protection against tuber blight.
Haulm killing and harvest
- Ensure a sufficient matured crop before haulm killing. This promotes a higher dry matter
content.
- The skin should be fully set before harvest.
- Prevent mechanical damage to improve storability.
- Tubers are big. Harvest and store with care to avoid damage and bruising.
Storage
- RONALDO is not suitable for long term storage.
- Prevent dehydration, cool with a small difference between cooling air and product
temperature.
- Take care of the wound healing period.
HZPC takes no responsibility for any harmful consequences that might eventually occur when using this information.
www.hzpc.com 4 Nov 2016