The spread of Olives (Olea sp.) on Wagga
Transcription
The spread of Olives (Olea sp.) on Wagga
THE JOHNSTONE CENTRE REPORT Nº 100 Nathan Cobb's Laboratory Conservation & Interpretation Project The spread of Olives (Olea sp.) on Wagga Wagga Campus I. Biology and History by Dirk H.R. Spennemann Albury Australia 1998 © The author and the Johnstone Centre of Parks, Recreation and Heritage, 1998. All rights reserved. The contents of this study are copyright in all countries subscribing to the Berne Convention. No parts of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system, without the written permission of the author, except where permitted by law. CIP Spennemann, Dirk H.R. 1958— Nathan Cobb's Laboratory Conservation & Interpretation Project. The spread of Olives (Olea sp) on Wagga Wagga Campus. volume I. Biology and history Albury, NSW: Charles Sturt University, The Johnstone Centre, 1998. 1 v., - (Report / Johnstone Centre of Parks, Recreation & Heritage, no. 100) ISBN 1-875758-67-4 DDC 583.87099448 1. Olive--History--Australia--Wagga Wagga (NSW). I. Charles Sturt University. Johnstone Centre of Parks, Recreation & Heritage. II. Title. III. Series. PDF Version 2004. Dirk H.R. Spennemann, The spread of Olives (Olea sp.) on Wagga Wagga Campus. I. Biology and history Contents Appendices ............................. 79 Appendix A — Point data for feral olives in Australia ........................ 80 Contents ............................. iii Introduction ............................. 5 The location......................... 5 Victoria......................................80 Appendix B — Olive varieties currently planted at Wagga Wagga . 81 Biology of Olives....................... 3 Olive species in Australia ...... 3 Olea europaea..............................4 Propagation & growth conditions ........................ 6 Seed propagation .........................6 Vegetative propagation................9 Growth conditions .....................10 Seed availability ..................14 Use of olive trees .................15 Current Distribution.................18 New South Wales and the ACT ...............................20 Norfolk Island............................21 Australian Capital Territory ......21 Victoria..............................22 South Australia ...................22 Queensland & Western Australia.........................23 Western Australia......................23 Status.................................23 Olives in Australia ...................26 Introduction of olives to Australia.........................28 Olive oils shown at International Exhibitions ......29 The Protagonists........................31 Olives in Wagga.......................33 Introduction of olives to Wagga Wagga.......................35 Extending the collection............42 Rootstock Trials ........................51 Reducing the collection.............51 Acknowledgments.....................53 Bibliography ...........................54 Personal Communications.........78 iii 1 Introduction olives (Olea ssp.) be investigated . To ensure that a proposed management action was successful, it was important to understand the vectors involved in the spread of feral olives and the speed of the spread (Spennemann 1997). This gave rise to the present study. This document represents the findings of the research w.r.t. the history of olive grove and its management. It combines both a compilation of data published in the scientific and horticultural literature, and new data collected in the field, as well as unpublished archival data. Wagga Wagga Agricultural College, the predecessor institution of Charles Sturt University, Wagga Wagga Campus, celebrated its centenary in 1996. As part of these celebrations it had been planned to adequately manage and interpret the ruins of Nathan Cobb’s Laboratory, as well as the associated concrete base of a granary. Observation had shown that olive trees were contributing to the decay of the sites. A draft conservation management plan of the resource had been developed which recommended inter alia that the extent and nature of an infestation with The location grounds of the Wagga Wagga Campus of Charles Sturt University (Grid reference 5326 61199). The study area is bounded by McKeown Drive on the east and north, Nathan Cobb Drive in the west. The southern and southeastern boundary is provided a dirt road leading from the roundabout at the entrance of Charles Sturt University Campus to the winery (figure 1.1). The heritage sites which gave rise to this assessment are located within the Riverina Campus of Charles Sturt University, Wagga Wagga, located north of the Murrumbidgee River, approx. 5km northwest of the town centre. The sites are situated at the eastern slope of the eastern hill of the Two Sisters, traditionally known as “Bald Hill” and now colloquially addressed as “Winery Hill,” within the v The spread of Olives on Wagga Wagga Campus Figure 1.1. Aerial Photography showing the study site on Wagga Wagga Campus of Charles Sturt University. Scale approx. 1: 6000. Date: April 1971. (Source: Orthophotomap 1:4000 Wagga Agricultural College 2717-VIII). 2 Biology 2 Biology of Olives Table 2.1. compiles some of the known olive species. The domestic olive (Olea europaea) is a cluster of cultivars that has evolved most likely through hybridisation from range of wild forms still occurring on the southern and eastern periphery of the Mediterranean: Olea chrysophylla, O. excelsa and O. laperrini (Turill 1951; Levison and Levison 1984; Zohary 1992). A feral form (O. europaea ssp. sylvestris) has also developed from escapees from orchards. O. europaea ssp. sylvestris and O. europaea ssp. europaea are fully interfertile. The genus Olea comprises about 35 species with a distribution throughout Africa, India, Malaya, Australasia and western China. It does not occur as a wild species in the Americas (Levison and Levison 1984). Cultivated olives are basically only a few generations removed from ‘wild’ land races (Rugini and Lavee 1992; Turrill 1952). While up to 2,600 cultivars have been recorded, most of them are heterozygous clones selected from spontaneous, uncontrolled crosses. Olive species in Australia regions, with dry and hot summers and winter-dominant rainfall. In South Australia the 500mm annual rainfall isohyet seems to be defining the boundary of its distribution (Parsons & Cuthbertson 1992, p. 523). Olea can occur on a wide range of soils. Olea are evergreen shrubs or trees. The leaves are opposite, simple in form, with non serrated margins. The lower surface of the leaves usually shows a dense covering of scale. Two olive species occur on the Australian mainland and offshore islands. Australia, two introduced varieties of the same species and one native. Introduced are Olea europaea ssp. europaea and Olea europaea ssp. africana, while Olea paniculata is deemed native to Australia. The European native olive, Olea europaea ssp. sylvestris was never transplanted to this continent. In their habitat Olea ssp. occur in semi-arid to subhumid warm-temperate 3 Table 2.1. Taxonomy of some members of the genus Olea (after various sources –see text) Division SPERMATOPHYTA Subdivision ANGIOSPERMAE Class DICOTYLEDONAE Family OLEACEAE Tribe OLOEOIDAE Subtribe O LEINEAE Genus Olea Olea europaea O.e. africana Miller O.e. cerasiformis (Webb & Berth.). O.e. europaea L. O.e. maderensis O.e. sylvestris L. Olea paniculata R.Br. (O. apetala Vahl.) Olea capensis L. Olea dioica Roxb. Olea exasperata Jacq. Olea excelsa Olea fragrans Olea glandulifera Wall. Olea lancea Lamarck Olea laperrini Batt. et Traut Olea laurifolia Lamarck Olea paniculata R. Br. Olea verrucosa Link. The leaves commonly abscise in the spring at an age of 2-3 years, but older leaves can be present. Domatia are absent. Venation is obvious on the upper surface, but obscure on the lower surface. The flowers are borne on an inflorescence of 15 to 30 small flowers in the axil of each leaf. The petiole is up to 100mm long, the racemes 4060mm. The fruit, ripening in summer, is a drupe, globose to ellipsoid, 10-30mm, commonly only 15-25mm long and approx 6mm in diameter, fleshy and glaucous. Depending on the tannin content, especially in feral olives, the fruit can be very bitter. The fruit have a thin smooth hairless skin, green when immature and purple-black to black in colour when ripe. The oil content in the fruit varies Olea europaea Olea europaea is a much-branched evergreen tree of variable size, glabrous and ranging from 2 to 15m in height with a dense, round crown; the most common height is 5-10m, and 15m is rarely reached. The stems of the tree are greenish-black with a rough bark. The root is well branched and woody. The root system is very wide and generally shallow. The leaves are set opposite are narrow oblong (lanceolate) to elliptic, 30-70mm long, 8-25mm wide. The apex is acute with a small hook or point, the base attenuate to cuneate, margins entire and recurved. The upper leaf surface is greygreen in colour and glossy, while the lower surface is covered with a dense cluster of silvery, golden or brown scales. 4 Biology Olea europaea L. ssp. africana (Miller) between varieties (it can reach up to 20%) and even on an annual basis in the same variety. The fruit contains a bony endocarp with 1-2 seeds. The seeds are 10-15mm long and oily. Common names: African olive, Wild olive, Golden olive; Olienhout (South Africa), Smallfruit, Russian Olive (in Hawai’i) *) . Synonyms: Olea lancifolia; Olea cuspidata Link.; Olea europaea L. ssp. cuspidata. Description: Leaves mainly 60-100mm length, 10-25mm wide, apex often with hooked tip, upper surface often dark green and glossy, lower surface green or yellowish brown. (Hardin 1992, p. 472; Beadle 1984, p. 700; Hartley 1979, p. 168; Turrill 1951). Olea europaea ssp. sylvestris (Mill.) Hegi Common names: Wild olive, Olivastro, Oleaster Synonyms: Olea oleaster, Olea europaea ssp. oleaster (Hoffmanns et Link.); Olea africana; Olea ferruginea; Olea chrysphylla Lam.; O.c. somalensis. Description: The wild olive (not introduced to Australia) has often a more bushy appearance, a ‘tortuous growth’ and thorny branches. Its leaves are much smaller and the fruit is overall drier. The tannin content of wild olives is reported to be higher than in cultivated varieties (Maiden 1887). Wild olives (feral? olives: Turill 1951) tend to grow alone or in small clusters (Espais Naturales 1996). Figure 2.1 Olea europaea (Drawing: Dirk H.R. Spennemann 1997). In addition to the Australian native olive, the following three subspecies of the European olive are worth noting: Olea paniculata (R. Br.) Olea europaea ssp. europaea L. Common names: Native olive; Marble wood, Iron wood, Maire (NZ) Common names: European olive, Edible olive, Table olive. Synonyms: Olea apetala Synonyms: Olea gallica, Olea sativa, Olea europaea ssp. sativa. Description: O. paniculata is an up to 30m tall tree, with trunk up to 0.9m diameter. The leaves are ovate to elliptic, usually 50-100mm long and 15-60mm wide, with an acuminate apex, a rounded to cuneate base, margins entire. The leaves have a green and glossy upper surface and a pale underside with small hollow domatia along the mid-vein. The panicles are many flowered and from 40 to 100mm long. The drupe are ovoid, 8-12mm long, scarcely succulent and of bluish black colour. The tree flowers from October to December and grows in or near riverine, dry or littoral rainforest north from the Hunter Valley as well as in New Zealand (Hardin 1992, p. 472; Kirk 1881; Macdonald 1911). Description: Leaves mainly 30-70mm length, 810mm wide, apex without hooked tip, lower surface whitish or silvery. In Australia the tree flowers from October to November. Among the domesticated/cultivated olive varieties the leaf size varies, with Spanish varieties having larger leaves and Italian and French varieties possessing long and narrow leaves (Allen 1902a; Hardin 1992, p. 472; Robertson 1965, p. 685; Jessop & Toelken 1986, p. 1037; Martin 1994; Parsons & Cuthbertson 1992, p. 522-524; Beadle 1984, p. 700; Cooke 1989). *) Not to be confused with the Russian olive on the American mainland (Eleagnus angustifolia). 5 Endocarp (hard) Seed 3' Epicarp (thin) Mesocarp (soft) Polar diameter The spread of Olives on Wagga Wagga Campus Transversal diameter . 2' Transversal diameter a) Polar diameter b) c) Figure 2.2. Nomenclature of the parts of the olive drupe (a) and the measurements taken on the drupe (b) and the endocarp (c). Propagation & growth conditions ages the growth of suckers (Emerson 1997; Thomas 1995). Propagation occurs via seeds or vegetatively via cuttings. A 19th century source lists the following methods of propagation: “seeds, cuttings, layers, suckers, truncheons or estacas and old stumps, the latter split” (Anonymous 1873). Seeds generally germinate in autumn and seedlings grow at a moderate rate during winter. As moisture is reduced during summer the growth slows down. Growth continues over several years until flowering begins. Under normal circumstances olives will bear their first fruit after 10-12 years, but in irrigated areas trees have been known to produce after 4-5 years (Anonymous 1952). In established trees flowers develop on the previous year’s growth in the presence of sunlight. The development of flowers depends on sufficient chilling, yet not too much frost, in the preceding winter (Hartmann 1962). A life expectancy of 40-50 years for wild (feral) olives is assumed. Domesticated and tended, ie. unpruned, olives appear to have a life expectancy of up to 1,000 years. Heavy pruning of the tree encour- Seed propagation In California seed propagation is claimed to be slow and unreliable for horticultural purposes (Thomas 1995). This has been reported elsewhere as well , such as Queensland (Benson 1899), South Australia (Fowler 1940) and Victoria (1911), and appears to be a by-product of the domestication process (Zohary and Spiegel-Roy 1975). O.e. ssp. africana on the other hand appears to be a good and successful seed disperser, if the South African (Manders and Richardson 1992) and Norfolk Island experiences are any guide (Stevenson 1997). Olives grown from seed do not come true to variety (Fowler 1940) and revert “to more or less wild and worthless types” (Macdonald 1911). Because of this tendency they are usually only used as root stock (Marvin 1888, p. 60). The oil yield of trees grown from seedlings was found to be smaller than that of the original cultivated stock (Barnard 1882). 6 Biology Figure 2.3. Olea europaea spp. sylvestris (Marvin 1888). 7 The spread of Olives on Wagga Wagga Campus Figure 2.4. Olea europaea spp. europaea var. Frantoio (Marvin 1888). 8 the seed, freed of the flesh and the oily film (Boothby 1878, p. 11). Germination is affected by both internal dormancy requirements (inhibitors in the embryo or seed coat) and mechanical inhibitors (inability of the embryo to penetrate the hard endocarp; Sutter 1994). The sclerous endocarp also inhibits the hydration and oxygenation of the embryo (Leon & Altisent 1992). To obtain ideal germination conditions, the seed should be cracked or clipped without injuring the embryo (Macdonald 1912a; Wickson 1900; Dal Pero Bertini 1960a, p. 92, Rallo et al. 1992; Sutter 1994). Fowler (1940) recommended to soak the endocarps for a day in a caustic soda solution to soften them up. Regardless of pretreatment, however, the germination of olives is poor in the year following harvesting, good in the year thereafter, and then declines rapidly in subsequent years (Wickson 1900; Dal Pero Bertini 1960a, p. 92). Variaty in germination ability was repeatedly observed between cultivars (Leon & Altisent 1992). Seed germination trials in Wagga showed that the varieties Sevillano, Palermo and Lucques had comparatively poor germination capabilities (Mort 1949). While seed germination is slow and unreliable, rootstock grown from seed rather than truncheons were found to be more desirable (Cole 1911). Further, not all varieties produce the same quality root stocks. In the Wagga Wagga setting the best stocks were obtained from seedlings of the Verdale variety (Dal Pero Bertini 1960a, p. 92). However, the potential that seedlings could produce new varieties with desirable traits was recognised early and some attempts were made at Wagga, Pera Bore and Hawkesbury in NSW (see chapter 5) as well as in South Australia. The most successful selection was Hardy’s Mammoth (Hardy 1901; 1902). According to Martin (1994) the seed is (horticulturally) mature some five months after flowering. If harvested at that time, the seed will achieve maximum germination. If the drupe is allowed to fully ripen (eight months after flowering) then seed germination is greatly reduced. A similar observation was made by Rinaldi et al. (1992) who also found that the speed of germination increases with increased ripening. The germination of seeds from mature fruit is uncertain (ranging from 5% to 90%) and slow (from one to six months, or even longer), mainly due to the oily nature of the flesh of the drupe which prevents the access of moisture to the seed (Browne 1883; Anonymous 1899d). Olives with flesh attached rarely germinate in natural conditions (Wickson 1900). According to Mort (1949) the ideal time for seed propagation in Australia (at Wagga Wagga) is in June and early July. In order to facilitate germination, it is necessary to remove the oily film covering the endocarp. If fresh olives are to be used, the endocarp, once freed of flesh, needs to be washed in a solution of soda (Dal Pero Bertini 1960a, p. 92); strong lime or caustic soda (Fowler 1940; Macdonald 1912a), or dipped in hot water (Anonymous 1899d). At the turn of the century experiments were carried out showing that warm water (40°-70°C) would enhance germination, while near boiling water (90°C) would be detrimental (Anonymous 1900b). In the south of France, seed olives were traditionally fed to chicken, which eventually would pass Vegetative propagation Olives are known to be capable of vegetative propagation; accordingly, the use of layers and truncheons has been the primary means of reliable propagation (Benson 1899; Fowler 1940; Macdonald 9 The spread of Olives on Wagga Wagga Campus 1912a; Marvin 1888; Mort 1950). Trials at Wagga in 1948 and 1949 showed differences between varieties (table 2.2). 1873). They prefer well-drained neutral or alkaline soils with a pH in the range of 6.5 to 8.2 (Hobham 1995c). Table 2.2. Ease of vegetative propagation of various varieties at Wagga Wagga in 1948-49 (Mort 1950) Growth conditions Olives prefer a Mediterranean climate comprising of a relatively cool, but not too frosty winter, and a long, hot growing seasons (Connell 1994). While they prefer a sandy loam of moderate depth, olives are very hardy plant and will grow on sandy and calcareous soils. Olives tolerate limey and slightly saline soils (Connell and Catlin 1994; Hall 1972, p. 397) as well as moderate salinity in the air (cf. Davey 1873). A 19th century source claims that proximity to the sea is in fact a beneficial location (Anonymous Degree Variety Very difficult Sevillano, Macrocarpa, Lucca Difficult Hardy’s Mammoth, Manzanillo Nº 14 Less difficult Corregiola, Manzanillo Nº 2, Large Spanish, Bouquettier Fairly easy Verdale, Boutillan, Nevadillo Blanco Figure 2.5. Grove of Olea europaea ssp. europaea with some old-growth Eucalypts at CSU-Wagga Wagga (Photo: © Dirk H.R. Spennemann 1997). 10 Biology Figure 2.6. Grove of Olea europaea ssp. europaea at CSU-Wagga Wagga (Photo: © Dirk H.R. Spennemann March 1997). Figure 2.7. Grove of Olea europaea ssp. europaea at CSU-Wagga Wagga after substantial pruning (Photo: © Dirk H.R. Spennemann September 1997). 1888, p. 60). They are reported to be less susceptible to wind fall (Chaffey quoted in Allen 1901b). The plant is overall A tree grown from seed will have a long and strong taproot and, commonly, a straight stem (Thompson 1891; Marvin 11 The spread of Olives on Wagga Wagga Campus shallow rooting, however, with a depth of 0.5 to 1.2m (Martin 1994). Once established, olives are very drought resistant, even to prolonged droughts. It is reported to be limited by the 500mm annual isohyet in South Australia (Parsons & Cuthbertson 1992, p. 523), but if planted, or seeded under ideal conditions and established it can survive even lower annual rainfall. Growth and propagation experiments carried out by NSW Agriculture at the turn of the century have shown that olives can be planted in marginal areas (too hot, too dry, too cold, too wet), but that the plant would not fruit well (Allen 1901a). In Broken Hill it exists without watering in an area of 23 mm of rain per annum (Hall 1972, p. 393). Olives grow best, however, in an area of 500-800mm annual rainfall. Growth experiments and cultivation tests have shown that overwatering will lead to the death of olive trees. The plant requires winter chilling for successful floral development(Rallo et al. 1992; Voyiatzis and Pritsa 1992). Olives can withstand frosts for a short time “provided the thawing takes place under fogs or mild rain” (Anonymous 1873), but not below -8°C. Spring frosts are damaging to the bloom and the seed development (Hartman 1962). Madonald (1911) drawing on a variety of sources maintains that a temperature of -4.5°C (24°F) or less is injurious to fruit and a temperature of -8 to -10°C (14-18°F) or less causes severe damage to trees, especially in late winter and early spring, when the tree has grown new wood. Temperatures of -12°C (10°F) and below are reported as lethal (se also Antognozzi et al. 1992). Apparently many olive groves in France were killed during abnormal frosts in January 1820 (Macdonald 1911). Some severely frost damaged trees can be saved if they are cut back to the ground, allowing the roots to push up new shoots. Some olive varieties are very poor self-pollinators. Thus the presence of other varieties is required to successfully produce harvestable crops (California: UCCE 1997; Italy: Climato et al. 1993). Bryden (1939) conducted an assessment of the fruiting of olive trees at the Wagga Wagga orchard and found that 3.3 to 3.9% of all flowers were self pollinating and had set. Mort (1952) in a similar study found that the varieties Sevillano and Verdale are particularly poor setters. Figure 2.8. Example of the root distribution of a mature plant at the olive grove (after Connell and Catlin 1994) 12 Biology Table 2.3 Documented alternate bearing of unpruned olive trees at Wagga Wagga (Source: Mort 1953b). Variety Alternate bearing Ascalona Atro Rubens Attica Big Spanish Blanquette Blanquette (early) Blanquette (late) Bouquettier Boutillon Bucchine Corregiola Cucco Dr. Fiaschi Fantago Gros Redondou HAC Large Fruited Lucca Macrocarpa Manzanillo Nº 2 Manzanillo Nº 14 Mission Nevadillo Blanco O de Gras Oblonga Pera Bore 1 Pera Bore 2 Piccholine Picholine St. Chamais Pigali Regalis Sevilliano Tarasacoa Verdale pronounced pronounced tendency alternate pronounced pronounced pronounced pronounced pronounced tendency limited limited tendency pronounced pronounced pronounced limited limited pronounced limited limited pronounced pronounced pronounced pronounced pronounced pronounced pronounced pronounced pronounced pronounced very pronounced tendency tendency Use of olive Crop oil oil heavy light light oil oil Drupe size light very heavy small medium small small oil oil oil light very light very light oil oil oil pickling pickling pickling oil pickling oil oil 13 small heavy very heavy medium very light heavy heavy very light medium light light small small medium small small small The spread of Olives on Wagga Wagga Campus Seed availability out the amount of fruit and thus the amount of nutrients used. Mort (1953) could demonstrate in an experiment conducted at the Wagga orchard that pruned Manzanillo olive trees bore more fruit overall and that the production was more even (table 2.4). It would appear that alternate bearing holds true for both the domesticated/ cultivated plants and for ferals. For example, according to an 19th century source, a great variability has been observed, with untended/unpruned trees which have ample seeds in one year and scarcely any the next (Davey 1873). Overall, unpruned trees not only tend to produce less, but also produce smaller (drupes? and) seeds (Barnard 1881). Substantial growth of olives, however, increases leaf litter generation and fire risk (Parsons & Cuthbertson 1992, p. 523). While flammable, due to the thin and well aerated branch network, mature olives cannot be destroyed by fire. W. Frogatt mentions an example from Crete, where mature olive orchards had been burnt in a civil feud. For practical purposes the trees appeared to be dead. yet they grew new shoots and suckers the following year (Frogatt quoted in Beverly 1935). The availability of seeds depends on the season and life cycle of a plant. Commonly large olive crops in one year are followed by smaller crops in the next. This “alternate bearing” has been observed in California (UCCE 1997); Italy (Chapman 1896); the Spain (Jordano 1987); and in Australia (Anonymous 1873; Allen 1902b). Alternate bearing is well developed among Sevillano where the interval between heavy crops can be three to four years (Mort 1953, p. 257). Table 2.3. compiles the experiential data for the Wagga Wagga orchard. Allen (1902b) argues that the alternate bearing is more pronounced among unpruned trees than in well tended orchards. Even though, the productivity is known to fluctuate. According to Dal Pero Bertini (1960a, p. 32) the plant uses up selected nutrients in a heavy crop year and cannot establish enough flowers in the next (see also Rallo et al. 1992). Alternate bearing is more pronounced in warmer climates where the required number of dyas of chilling to develop the floral buds cannot always be guaranteed (Lavee and Aida 1992). Pruning merely acts as a method of fruit thinning and thus tends to balance Table 2.4. Effect of pruning on the annual yield (in lbs) of Manzanillo olives (Mort 1953). Year Pruned (n=2) Unpruned (n=2) 1950 184 275 1951 137 7 14 1952 85 164 1953 180 4 Total 586 450 Biology Use of olive trees The use of olive oil and pickled olives as items of food are culturally conditioned, with a high consumption in the traditional olive countries, such as Greece, Spain, Italy and southern France. In the United Kingdom, on the other hand, olive oil was only rarely consumed as table or salad oil. While today olive oil is primarily an alimentary product, it was also used for industrial purposes in the 19th century, mainly as a lubricant, but also in woollen manufacture (Anonymous 1865b, p. 78) and as an emulsifier in the drying of raisins (Anonymous 1937). Machinery oil, commonly traded as “Gallipoli oil” in the mid 19th century, was often produced from overripe drupes that had been gathered up from the ground (Macarthur 1871). Oil from such fruit tended to have a rancid taste that made it unpalatble for human consumption, a factor irrelevant in industrial applications. In 1899/1900 the Royal Navy inquired whether olive oil could be procured from the Australian colonies (Anonymous 1900a; 1900e) as both the Navy and the merchant marine had a high consumption of the oil as a lubricant. In addition to the common use of olive trees as producers of fruit for pickling and table oil production, olives are grown as ornamentals, hedge plants, windbreaks and shelter plants (Beadle et al. 1982; Hall 1972; Simpfendorfer 1975). Anderson (1931) in an assessment of the use of trees on farms comments that on the western slope of NSW and along the coast olives would be suitable plants to provide a shelter belt and windbreak, especially for orchards (figure 2.6). This had also been advocated in South Australia (Perkins 1916; 1918b; 1921), Queensland (Benson 1899) and Victoria (Pye 1917). Mort (1950), however, coun- selled that olives would take 20 years to grow into large and dense shade trees. A dual use of shade tree and production tree, while theoretically possible, was not practical as the unpruned trees would show alternate bearing and would grow too tall to allow effective harvesting. Mort (1950), based on trails at Wagga Wagga, recommended the Corregiola, Nevadillo Blanco, Mission and Sevillano varieties as ideal shade and shelter trees. Both Hall (1972) and Simpfendorfer (1975, p. 232) suggested the use of olives as a hedge and windbreak as the plant can be trimmed to a hedge if required. According to Hardin (1992, p. 412) the subspecies Olea e. europaea is predominantly used for fruit production, while Olea e. africana serves as the main ornamental plant. Barnard (1882) recommended to use (cheep) seedlings as hedge plants as the yield would be of no consequence, and to plant a high quality, grafted trees every 9m (30ft) which should be allowed a clear stem above the hedge. This would maximise fruit production while at the same time check the growth of the hedge. Olives had also been planted at property boundaries at regular intervals with wires put through the stems, not only produceing fruit but also serving as permanent and fireproof fence posts (cf. Th. Hardy’s property at Bankside, SA: Crompton 1899). Because of their drought resistance and generally low demands on water olives have been advocated as landscape plants in other dry countries, such as the southwest of the USA. Because they are heavy pollen producers, the fruit bearing varieties have been banned in some areas and the planting of fruitless varieties is recommended (cf. Plantadviser 1996; Emerson 1997). 15 Figure 2.10. Olea europaea ssp. europaea as a windbreak for an orange orchard at Yanco Agricultural Research Station (Photo: © Dirk H.R. Spennemann 1997). Figure 2.11. Row of mature Olea europaea ssp. europaea at the southern boundary of the Agricultural Research Institute Paddock at Wagga Wagga (Photo: © Dirk H.R. Spennemann 1997). 16 cause of its longevity, it had been used in the 19th century in lieu of brass for bearings in sawmills, especially for circular saws (Maiden 1887). Although the use of the wood had been advocated at the time of olive introduction (Anonymous 1870), olives have not been grown for this purpose in Australia. On Norfolk Island, however, Olea europaea ssp. africana has been grown during the period of the convict settlement for fence post timber (Stevenson 1997). In the Mediterranean olives have been grown also as fodder for goats since Classical Greek times. Cremer (1990, p. 381) advocates olives as browse and fodder plants suitable for broad scale planting in subtropical to temperate Australia (listed as an economic plant by Hartley 1979, p. 168). The wood of the olive is very hard and marbled and has been traditionally used for wood carving. The heartwood of the olive is hard, oily and cross-grained. Be- 17 3 Current Distribution during bloom and seed development are also detrimental. if these conditions are not met, olives can still grow, if tended, but do not tend to fruit and thus are not likely to be dispersed by birds and other vectors. This normal distribution is altered during El Niño/Southern Oscillation years when the climatic belts shift marginally with drier conditions in the interior and warmer conditions in Southern Australia. Drawing on the botanical literature the approximate distribution of exotic olives (Olea europaea ssp. europaea and Olea europaea ssp. africana ) in Australia can be determined. In addition to the distribution shown on the maps (figures 3.1 and 3.2) and in the discussion, olives occur in gardens, and especially in Catholic convents and orphanages run by nuns, as the olive is associated with the Mother Mary concept (Moldenke 1953). Both because of its longevity and its frequent mention in the bible, inc. the Garden of Gethsemane (Jerusalem), olives are frequent ornamentals in cemeteries (Standish 1960) and occur in the gardens of Catholic convents and orphanages. Figure 3.1 compiles the distribution of Olea europaea ssp. europaea and Olea africana ssp. europaea in Australia based on the distribution map provided by Parsons and Cuthbertson (1992, p. 522) with additional data. The fact that the early clusters of olive distribution centre on Perth, Adelaide, Melbourne and Sydney suggest that the spread is mainly due to escaped garden and orchard plants. The parameters limiting the natural dispersal of Olea europaea europaea in Australia are the annual rainfall with the 500 isohyet being the boundary, and the required night chilling in winter. Frosts 18 Current Distribution Figure 3.1 Distribution of Olea europaea ssp. europaea and Olea europaea ssp. africana in Australia in the 1960s Figure 3.2 Distribution of Olea europaea ssp. europaea and Olea europaea ssp. africana in Australia in the 1990s. 19 The spread of Olives on Wagga Wagga Campus New South Wales and the ACT et al. 1987; Cuneo pers. comm. 1997) and in the Windsor districts (Parsons & Cuthbertson 1992, p. 523). In Camden Olea europaea ssp. africana showed a 100% increase in area covered since 1985. On the drier ridge areas on Mount Annan Botanic Gardens the olives have become a significant weed problem (Cuneo pers. comm. 1997). In urban bushland around Sydney (Sydney Harbour National Park) Olives Olea europaea ssp. africana) is found scattered throughout the parkland (Smith 1984). Olea europaea ssp. africana is also reported in patches from all three coastal areas and the and central western slopes. Its coverage is patchy, however. For example, it was not found during a systematic flora survey of Eurobedalla National Park on the NSW South Coast (Lockwood et al. 1997). Jacobs and Pickard (1981) in their census of NSW plants mention that Olea europaea ssp. europaea is distributed on the northern and central western slopes, while O. europaea ssp. africana is distributed on the north and central coast. Hardin (1992, p. 472) states that Olea europaea grows in disturbed sites, often along roadside and river banks. It occurs south from Lismore area. Olea europaea ssp. europaea, planted as a fruit tree, is occasionally naturalised in the inland districts from Inverell to Grenfell, and is reported on the northern and central western slopes. Olea europaea ssp. africana, planted as an ornamental, has often become naturalised and an invasive weed, occurring chiefly in the coastal districts from Lismore to Milton. Particularly dense populations have been reported around the Camden area (Dellow Figure 3.3 Large, self seeded Olea europaea var. europaea on the northern slopes of “Winery Hill” Charles Sturt University, Wagga Wagga NSW. (Photo: © Dirk H.R. Spennemann 1997). 20 ssp. africana on the other hand, has become a major invasive weed in all cleared areas of the Norfolk Island forest, as much of its seed crop germinates (Skeat 1984; Stevenson 1997). An almost identical situation exists on Hawai’i, where Olea europaea ssp. europaea is confined to the original plantings (Green 1997) and where Olea europaea ssp. africana has spread (pers comm. Tunison 1997). Olives will propagate vegetatively even in near tropical environments (Connell 1994). Olea europaea ssp. europaea is not mentioned in Western New South Wales (Cunningham et al. 1981), but reported for Broken Hill (Hall 1972, p. 393). Norfolk Island Olea europaea ssp. africana had been transplanted to Norfolk I. during its use as a convict settlement from 1788 onwards, mainly for use as fencepost timber (Hermes 1987; Stevenson 1997). The subtropical oceanic climate with for olives comparatively high rainfall (mean: 1325mm) is not suitable for the self propagation of Olea europaea ssp. europaea (due to the absence of cold winters), even though it is present on the island as an introduced cultivar (Stevenson 1997). Eradication campaigns in 1987 (Hermes 1987) were only partially successful (Stevenson 1997). Olea europaea Australian Capital Territory The plant is not listed in the 1979 flora of the ACT (Burbridge & Gray 1979), but occurs in as cultivated planting in private gardens. Figure 3.4 Olea europaea var. europaea at a former homestead., now Charles Sturt University, Thurgoona Campus NSW. (Photo: © Dirk H.R. Spennemann 1997). 21 The spread of Olives on Wagga Wagga Campus 34°S 36°S 38°S 140°E 142°E 144°E 146°E 148°E 150°E Figure 3.5. Point data of the distribution of feral Olea europaea ssp. europaea in Victoria (Source: Victorian Flora Database ) Victoria The distribution in Victoria is not well published. Willis (1972, p. 518) mentions olives as spontaneous or long-persistent in parts of Victoria. He reports Olea europaea as appearing on the steep escarpments of the Yarra River at Studley Park. The Victorian Flora Database was queried, which furnished a print out showing the point data for feral Olea europaea ssp. europaea (figure 3.5.). Carr et al (1992, p. 51) state that Olea europaea ssp. europaea occurs as a severe threat distributed widely but in small populations. The vegetation formation predominantly invaded by olives are low grassland and woody grassland, dry sclerophyll forest and open woodland, riparian vegetation and rock outcrop vegetation. In the Grampians olives from neighbouring olive orchards have infested parts of the national park (Doyle pers. comm 1997). A similar infesttaion of the Warby Ranges State Park in north-eastern Victoria in the 1980s was combatted by cutting off the olives and posisoning the stumps (McDonald pers comm.) Abandoned orchards have been docuemmnted as the source of incipient roadside infestations, such as Chiltern (MacDonald pers. comm). Dookie Agricultural College had an olive grove as an orchardry teaching tool since 1879 (Thompson 1891). Little is known about the spread of olives from that source. An olive plantation near Wangaratta was left to go feral in the 1880s (Thompson 1891). South Australia Cultivated since the early days of settlement, Fuller (1942) reports that the olive had spread into the Adelaide hills. Robertson (1965, p. 685) mentions that 22 Current Distribution the olive has spread spontaneously not only on the Adelaide foothills but also into the sandhills at Encounter Bay. The 1986 edition of the Flora of South Australia mentions that Olea is distributed on the Eyre peninsula, the Yore peninsula the Murray Region, Kangaroo Island, the Southern Lofty Region and the southeastern region (Jessop & Toelken 1986, p. 1037). It is not totally clear whether the spread is solely due to vectors or whether incomplete reporting in the earlier period contributed to this massive spread in distribution. Cooke (1989) shows that feral olives are now abundant around Clare as self-sown plants around road sides, mainly close to old planted olive trees, confined by the 500mm isohyet, and that the olives had spread into the Northern Lofty and Flinders Ranges Regions. Given the reported figures of olive oil production in South Australia, and the number of official trees in the census (30,000), it appears that some 20,000 feral olive trees are also harvested (Cooke n.d.) Figure 3.6. Point data of the distribution of feral Olea europaea ssp. europaea in South Australia (Source: Cooke n.d.) Queensland & Western Australia Vegetation surveys of South and Central Western Queensland as well as South Central Queensland have not yet reported the presence of feral Olea sp. (cf. Boyland 1984; Jessop 1981; Neldner 1984; 1991; 1992). Domesticated olives grew well at the turn of the century in the southern and central parts of Queensland (Anonymous 1907), and along the coast, especially on St. Helena, fruiting well in the coastal areas and the Darling Downs (Anonymous 1909). Western Australia Olea europaea ssp. europaea is reported to occur as feral plants from Perth and the Dale Region (Hnatiuk 1990, p. 408). Status declared a community pest species for three areas 1980, which was extended other areas in 1990 (SAAPCC 1990; Cooke n.d.). Consequently, the olive has been classified in South Australia as a noxious weed, class 5, unless planted for domestic or commercial use (Parsons & Cuthbertson 1992, p. 552). In Victoria Once established, Olea europaea forms a dense and permanent canopy under which olive seedlings can grow, but native trees cannot regenerate. This characteristic was not only observed in South Australia (Cooke 1991), but also in South Africa (Manders and Richardson 1992). In South Australia Olea europaea was 23 The spread of Olives on Wagga Wagga Campus too its is considered to be an environmental weed (Carr et al 1992, p. 51). In Sydney Harbour National Park Olea europaea ssp. africana is found scattered throughout the area and recognised as a plant pest potentially capable of creating a much greater problem (Smith 1984). In the Camden area of NSW olives have invaded remnant bushland (Dellow et al. 1987) and pose a major problem in Mt. Annan Botanical Garden (Cuneo 1997). Eradication was conducted on Norfolk Island (Hermes 1987; Stevenson 1997). The importance of olives as a woody weed is increasingly recognised. It is, for example, not included in Lamp and Collet’s Field guide to weeds in Australia (1976; 1989), but treated extensively in Parsons and Cuthbertson (1992, p. 522ff.). In South Australia a number of weed eradication programs were conducted (cf. Bellette 1993; Hawkins 1994; Stafford and Venning 1984; Robertson 1984). All over the world olives have proven themselves to be successful invaders of marginal land and disturbed lands, for example along road sides, riparian strips and so forth such as in California (Maslin 1996), Hawai’i (pers. comm. Tunison 1997) and South Africa (Manders and Richardson 1992; Richardson and Fraser 1995). In the South African example olives had been found in all survey squares of scrubland, indicating that Olea europaea var. africana successfully spread on a wide front and was posed to dominate the bushland. Clearly, the new thrust to develop an Australian olive industry in the 1990s has meant the proliferation of new olive orchards, both on a commercial and a small hobby scale. The trend continues at present. All of these plantations now form focal points of new weed invasions throughout much of New South Wales, Victoria and South Australia. The problem will become exacerbated if the new ventures become uneconomic and the orchards are let up to run feral. Olives may well become the major woody weed of the next decade. 24 Figure 3.7. Self seeded olives along a road side verge. CSU Wagga Wagga Campus (Photo © Dirk H.R. Spennemann 1997). Figure 3. 8. Self seeded olives in remnant bushland. CSU Wagga Wagga Campus (Photo © Dirk H.R. Spennemann 1997). 25 The spread of Olives on Wagga Wagga Campus 4 Olives in Australia Alcalá in Southern California, the “Mission” variety of olives became wide spread in California, and the southern USA (Louisiana, Mississippi, Florida, Arizona, and New Mexico) and was introduced overseas, among them Australia (Marvin 1888; Connell 1994). The Portuguese introduced olives to Brazil, British enterprise carried them to India, South Africa, New Zealand, Australia and HongKong, and from there through western China (Allen 1901a; Coates 1902). Because of its apparent use as a not very demanding plant, various governments provided financial incentives to grow olives (cf. US Department of the Treasury 1818a-b; Anonymous 1921a). British trading interests owned large olive plantations in Italy and Spain. The Estate of the Duke of Wellington at Granada, for example, comprised in addition to vineyards of an olive grove of 36,000 trees (deCastella 1908). It was from plantations such as this that the demand for olive oil in the British colonies was met—at least until such time when own plantations had been developed. Traditionally, olives are widespread cultivars throughout the Mediterranean, with subfossil seeds occurring commonly in the Bronze Age (Metcalfe 1966; Zohary and Spiegel-Roy 1975), with the to date oldest samples obtained from archaeological contexts in Spain dated to 7410±70BP associated with late Epipalaeolithic material culture (Barton et al. 1990). During the Greek Classical period olives were predominant crop in the Near East (Syria, Lebanon, Palestine), spreading through Greece and Italy, and during the Roman times becoming an important crop in the south of France and especially in Spain and northern Africa. Olive cultivation was of great importance in ancient Greece and Rome with sixteen varieties known (Hehn 1902, pp. 102-121; Groß 1975). The usefulness of the plant, especially as a source of oil, saw its rapid spread to the Spanish colonies in Chile (1560) and Peru (early 1600s), Argentina (La Rioja, 1600s), Mexico (early 1700s), and California. (Allen 1901a; CPJ 1884; Titarelli 1997). Introduced in 1769 by Spanish missionaries to the Mission San Diego de 26 Table 4.1 Mentions of olives in Sydney and Melbourne Newspapers until 1855 Year Date 1812 1822 May 23 November 29 Newspaper Sydney Gazette Sydney Gazette Item 1824 February 26 Sydney Gazette 1826 January 9 Sydney Gazette 1827 1827 January 15 October 5 Sydney Gazette Sydney Gazette 1829 February 14 Sydney Gazette 1829 1829 February 14 February 23 Sydney Gazette Sydney Monitor George Suttor introduces olive and date palm plants Medals offered by the Society of the Arts for olive oil from NSW. Gold medal for 10 gals of first oil in British colonies of Africa or NSW, Silver medal more than 6 gallons of fine oil in ditto, specimens to be produced on the last Tuesday in February of the years 1825, 1826 or 1827 Premium offered by the Society of the Arts for olive oil from NSW. Conditions as above, but extended to 1828 Premium offered by the Society of the Arts for olive oil from NSW. Conditions as above, but extended to 1829 Olives now bearing in the Botanical Gardens, Sydney Description of an olive tree in the Botanical Garden, Sydney, flowering for the first time, six years after planting Editorial on the need to improve the olive production in NSW. The history of the olive introduction and its potential are described Free cuttings to be had at the Botanical Gardens, Sydney Editorial criticising the views of the Sydney Gazette 1829 March 3 Sydney Gazette Editorial criticising the views of the Sydney Monitor 1829 March 3 Sydney Gazette Letter criticising the views of the Sydney Monitor 1829 March 9 Sydney Monitor Editorial criticising the views of the Sydney Gazette 1830 January 23 Sydney Gazette 1831 1836 May 11 August 11 Sydney Monitor The Colonist 1836 1836 1836 1841 August 11 December 15 December 22 August 7 The Colonist The Colonist The Colonist Australian 1842 September 21 Australian 1842 October 11 1842 1842 1843 October 17 November 30 April 27 1843 August 23 1843 June 5 1844 March 21 1853 May 18 Sydney Morning Herald Australian Sydney Gazette Sydney Morning Herald Sydney Morning Herald Sydney Morning Herald Sydney Morning Herald Argus Article mentioning an abundant crop of olives in the Botanic Gardens Article by Thomas Sheppard on olive culture Advertisement for olive oil and pickled French olives (J.B. Bossley) List of commodity prices, inc. olive oil Advertisement for pickled French olives (J.B. Bossley) Advertisement for pickled French olives (Lipscomb & Co.) Prizes for olive oil offered by the Floral and Horticultural Society Editorial on the resources of the colony, arguing for the production of olive oil, then retailing at 2/6 per gallon Advertisement for imported olive oil, first quality 12s/gal, second quality 9s/gal. Editorial on the olive Letter to the editor by J.W. of Jamberoo, proposing wide propagation of olives Letter to the editor by J.W. of Jamberoo, on colonial productions’, inc. olives Letter by EW.S. Hall, in response to previous item. Provides a discussion of imports and import substitution opportunities Article on olive cultivation Stating that olives were not successful in Victoria 27 The spread of Olives on Wagga Wagga Campus Introduction of olives to Australia Olives were among the earliest exotic plants brought to Australia. George Suttor introduced an olive in 1800 to New South Wales. Since then olives have been introduced on several occasions to Australia and are now cultivated in most states. Without doubt, however, the most successful olive industry was established in South Australia. Olive growing was seen by many as a suitable means to make the most of the dry land encountered inland of the settled coast. In the early period of the colonies in Australia a number of pamphlets were written that set out the methods of olive cultivation in the traditional olive countries of Spain, Portugal, Italy and France, and which provided recommendations for the successful transplantation of the olive to the Australian environments (cf. Busby 1839; Duncan 1844; Mitchell 1849). Others advocated the same for a local, rather than colonial audience (cf. Waugh 1851). Occasionally articles appeared that advocated the cultivation and use of olives as evidence of a cultured society. “J.W.” of Jamberoo, in a letter to the editor of the Sydney Morning Herald of April 1843, for example, wrote a three-column item discussing the antiquity of the olive and its suitability for Australia, replete with Latin quotes. The trend to draw upon at overseas examples for guidance continued even after Australian experiences had been made not only in South Australia but also in NSW (Bernays 1872; Browne 1883). E. Neville-Rolfe, British consul at Naples, provided a report on the olive industry of Italy for the British Parliament. Excerpts from this report were reprinted in both the Agricultural Gazette of New South Wales and the Queensland Agricultural Journal (Neville-Rolfe 1898a-b). When the South Australian olive crop had borne fruit and had provided commercial quantities, the South Australian experience was paraded to the other colonies by the South Australian ‘protagonists’ Samuel Davenport (1864; 1870; 1871a-b; 1892), William Boothby (1878) and J.Brown (1884), often combining Australian and European data (Villanis 1884). The nursery trade also weighed in, providing some handy hints in the back pages of their trade catalogues (cf. Shepherd 1851). William Macarthur, producer of olive oil since the 1820s, also commented on olive cultivation, but did so only rarely and then in not well publicised places (Macarthur 1871). In the period of the 1820s to 1840s Sydney, Melbourne and Perth papers commented on the desirability of cultivating the olive. The London-based Society for the Encouragement of the Arts, Manufactures and Commerce offered prizes for colonial olive oil as early as 1822, with the deadline being expanded to 1829 (table 4.1). Further encouragement occurred. In 1842, for example, the Australian editorialised that “the cultivation of the olive may be undertaken with profit to individuals and the greatest positive advantage to the colonies”(Australian 17 October 1842, p. 2). It is of interest to note that little communication seems to have taken place between the British settlement in Western Australia and the eastern colonies. Attempts to develop an Western Australian olive oil industry seem to have been made in isolation (Anonymous 1929). The 1860s to 1880s saw a continual stream of small articles, mainly letters to the editors, suggesting recipes for the 28 Olives in Australia pickling of olives as well as general hints on the culture of olives Bartee 1871; Howitt 1871; Davenport 1871b; Anonymous 1879a-b; Sangar 1866). Despite repeated attempts by the governments of NSW and Victoria to develop a viable olive industry, the production of olive oil was essentially confined to South Australia until the 1930s. At the turn of the century formal government involvement occurred, following the formation the Departments of Agriculture in New South Wales (1890), Victoria (1889), Queensland (1887), South Australia (1888) and Western Australia. In addition to the ongoing research into propagation, interest developed in the establishment of an organised industry. A number of articles appeared in the journals of the various Departments of Agriculture describing and assessing the olive oil and pickling industries of Spain, Italy and France (cf. deCastella 1908). Research and observation had shown that most of temperate Australia was suitable for olive production, assuming the locality was neither too wet nor to too dry, and that olives could even be grown in tropical Queensland, but would not produce any fruit on a reliable basis. The influence of the soils on the quality of the olive oil was also discussed (Pye 1917). Systematic observations made at Dookie College in Victoria, for example, showed that each sample of olive oil pressed there from growers in the area not only varied in texture, colour and taste between the olive varieties use, but also within the varieties also between the areas it came from (Pye 1917). Little was made of this observation until the recent advent of ‘designer labelled” olive oils. Olive oils shown at International Exhibitions Australian olive oils were shown at a number of international and intercolonial exhibitions, with the aim of demonstrating to potential buyers that high quality oils could be procured regionally and locally. Table 4.2 compiles the available evidence for olive oils exhibited, while table 4.3 presents the data for the pickled olives. Figure 4.1 plots the number of Australian papers written on the topic of olive propagation and the use of the drupes. The histogram reflects the overall interest in the topic. The frequency of papers on olives shows a cyclical pattern. The rationale for the olive oil production, mainly as a means of import substitution, is determined in one or more papers, followed by a flurry of papers on the topic. Then the issue of the olive industry dies down, mainly due to economic failure, only to be resurrected one or two decades later. In the 1870s olives were heavily advocated as a means of import substitution and consequently a number of papers and treatises was published. This continued, on a lesser scale, in the 1880s. The formation of the departments of agriculture in the 1890s meant the renewed effort to utilise olives as an alternative means of income, especially in the drier areas. This resulted in a number of experimental papers published in the first decade of this century. Then the interest in the topic flagged, resurfacing in the late 1940s and the 1950s, following the war effort and especially the post-war immigration of Italians and Greeks which resulted in both a real and a perceived demand for the fruit. In the 1980s and 1990s interest again surfaced, driving once more by the ideas 29 The spread of Olives on Wagga Wagga Campus of import substitution and the provision of a local alternative to expensive food items. To a degree the revived impetus in olives mirrors the success of the Australian wine industry in the 1980s and 1990s. Olive plantations were established in most Australian states with the exception of Tasmania. Table 4.2. Origin of Australasian olive oil samples exhibited at intercolonial and international exhibitions Exhibition Great International Exhibition International Exhibition New Zealand Exhibition Year London 1851 London Dunedin 1862 1865 S.A. NSW Vic. W.A. N.Z. Source ■ Maiden 1888 ■ Knight 1865 Anonymous 1865a Anonymous 1866a Anonymous 1870b Davenport 1892 Scott 1888 Boothby 1878 ■ Intercolonial Exhibition of Melbourne Australasia Intercolonial Exhibition Sydney 1866 ■ ■ 1870 ■ International Exhibition International Exhibition Universal International Exhibition International Exhibition Vienna Philadelphia Paris 1872 1876 1878 ■ ■ ■ Sydney 1879 ■ International Exhibition Indian Exhibition Colonial and Indian Exhibition Centennial International Exhibition New Zeal. & South Seas Exhibition Franco-British Exhibition Melbourne Calcutta London 1880 1883 1886 ■ ■ ■ Melbourne 1888/89 ■ ■ Dunedin 1889/90 ■ ■ London 1908 ■ ■ ■ Anonymous 1879a Scott 1888 Scott 1888 Scott 1888 ■ ■ ■ Anonymous 1890b Hastings 1891 Anonymous 1908 Table 4.3. Origin of Australasian samples of pickled olives exhibited at intercolonial and international exhibitions Exhibition International Exhibition International Exhibition New Zeal. & South Seas Exhibition Franco-British Exhibition Year S.A. NSW Vic. Melbourne 1880 Sydney 1879 Dunedin 1889/90 ■ London ■ 1908 ■ 30 Qld ■ ■ N.Z. Source Anonymous 1880 Anonymous 1879b Hastings 1891 Anonymous 1908 Olives in Australia 24 22 20 18 16 14 12 10 8 6 4 2 0 1830 1850 1870 1890 1910 1930 1950 1970 1990 Figure 4.1. Number of papers written on olives (by decade) The Protagonists • George Chaffey (1848-1932), irrigation pioneer and entrepreneur in Canada and Victoria; • George Suttor (1774-1859), settler and horticulturalist in New South Wales; and • John Morphett (1089-1892), land owner and politician in South Australia. Data on the olive oil production of the various Australian colonies and States is either non-existent, as the industry was too small and insignificant to be enumerated, or patchy. The most complete data set comes from South Australia. With the formation of the Commonwealth annual statistics exist, but they, too, are quite patchy. There are no data specifically for the volume of pickled olives imported to Australia. Various authors discussed the economic prospects of developing an olive oil industry in various colonies/states of The protagonists of the olive introduction to Australia were mainly viticulturists, for whom olives were a side line. Among the protagonists were: • Samuel Davenport (1818-1906), landowner and parliamentarian in South Australia; • Thomas Hardy (1830-1912), vigneron in South Australia; • James Busby (1901-1871), viticulturist and civil servant in New South Wales; • William Boothby (1829-1903), Sheriff of Adelaide and returning officer for South Australia; • Thomas Henry Fiaschi (1853-1927), medical practitioner and vigneron in New South Wales; • John Ignatius Bleasdale (1822-1884), Catholic clergyman and educator in Victoria; 31 The spread of Olives on Wagga Wagga Campus Australia. The main hurdle was the comparably high costs of collecting/picking the drupes in Australia, compared to the cheap labour available in the Mediterranean countries. This observation was made throughout the life of the industry, from Macarthur in 1871 to Macdonald in 1917 and Beverly in 1935. The Queensland Agricultural Journal commented on this and argued that the low wages paid in Spain and Italy were exploitation and that Australian produced oil should be preferred on these grounds. Other argued that the Commonwealth tariff of 2 shillings per gallon on imported olive oil could be increased to protect a budding local olive oil industry (cf. Macdonald 1911). The main reason why the olive industry did not expand in the 1920s and 1930s was that olive oil and pickled fruit were not staple diet items for the majority of Australians and because mineral oils had replaced olive oil as a lubricant for machinery (Macdonald 1911; Fowler 1939b). The interruption of shipping in WWII and the events of the war in the olive producing countries of France, Spain, Italy and Greece, saw the volume of olive imports drop from 358,000 gallons in 1938 to 14 gallons in 1942. Correspondingly the prize for imported oil climbed from 10-13 s/gal to 28-30 s/gal in 1942 (Hartmann 1962). The price development and the shortage of imported oil, coupled with a war ministry objective to improve the production of oils and other fats brought about a renewed interest in the development of an Australian olive industry. Following the end of the war the acreage of olive plantations increased dramatically from 340 acres in 1943 to 7233 acres in 1959. The main expansion of the industry occurred in Victoria. A factor which aided the development of the olive industry in Australia following World War II was the large influx of migrants from the Mediterranean countries, which created a new domestic market for both olive oil and pickled olives. By 1961 olive processing in Australia was limited. No table olive processing (pickling) plants existed in the country and all oil was pressed at five mills in Adelaide, Renmark, Mildura, Robinvale (since 1954) and Leeton (Hartmann 1962). 32 5 Olives in Wagga societies but to take a central and leading role, the New South Wales government formally established in 1890 the NSW Department of Agriculture. The main aim of the new department, placed under the direction of H.C.L. Anderson, was to engage in the collection and dissemination of ‘all useful information in regard to agriculture in its many branches … [to] introduce and distribute new seeds and cuttings’ and so forth. The Department was to analyse soils, investigate orchardry and animal husbandry, and send samples of wheats and other cereals and crops to a number of farmers as field trials. In addition, along the lines of Victoria’s Dookie College (founded in 1876 as a farm, 1886 as a college) and South Australia’s Roseworthy College, the NSW government decided to establish one or more agricultural colleges and, at the least, farm schools integrated into the research farms. Each farm was to be in a different area of the state and had been allocated different research directions. In 1891 the Department of Agriculture planned for the establishment of four experimental farms and farm schools, one of them in Wagga Wagga (Agricultural Gazette of New South Wales 2[7], 1891, 429; 2[12], 1891, 814). The 1860s saw the development of agriculture of New South Wales expand and the ‘wheat frontier’ being pushed further and further away from Sydney. In the late 1870s and early 1880s the inland districts, such as the Riverina had become a major grain producer (Butler 1959). The development of the railway, reaching Albury in 1881, and here especially the establishment of branch lines in the 1890s made increased wheat production a viable option (Dunsdorfs 1956; Robinson 1976). Despite the extension of the arable land, and increased acreage of land under wheat, the average wheat yields quickly declined due to an exhaustion of the soil and increased infestation with weeds and plant diseases. The 1889 wheat season in NSW almost failed when most of the harvest was destroyed by an outbreak of wheat rust (a fungal disease). Millers were even forced to import wheat from abroad for the first time in many years. Similar trends had been observed in the other colonies as well, and ominous sign for the future economic development of the Australian economies. In view of this disaster, and in view of over five years of pressure from rural lobby groups not just to fund agricultural 33 Figure 5.1. View of the experimental farm (orchards) seen from the top of the granary (Photo taken about 1903) Figure 5. 2 View of Bald Hill from the east. Note the experimental orchards in the foreground. Photo taken about 1903. Due to the recession of 1890-93 only the Agricultural College and research farm at Hawkesbury was begun (in 1891). It had been intended to commence work on the Wagga Wagga Experimental Farm in December 1891 (initially called the Murrumbidgee Experimental Farm), 34 Olives in Wagga Wagga but the legalities of the excise of the area required for the farm from the Wagga Wagga temporary Commons could not be accomplished as quickly as anticipated. Eventually dedicated in October 1892, the land chosen for the farm was in many respects this was not the best land in the area, and thus suitable to demonstrate farming in adverse conditions. The initial agricultural development of the farm began in April 1893 with forty acres of bushland and wood land being cleared, grubbed and ploughed. Sample crops were sown and planted. In the middle May 1893, for example, Nathan Cobb went to Wagga Wagga to sow over a period of four days some 200-300 varieties of wheat in drills side by side to test their qualities and to select the best returns for future sowing (Coleman 1894). In a parallel fashion a major orchard was established, comprising, among other trees, olives. Agriculture, in April it was announced an orchard was to be established (Anonymous 1894). Shortly after development progressed (Wagga Wagga Advertiser 14 June 1894, p. 3). Introduction of olives to Wagga Wagga Figure 5.3. A Nevadillo Blanco variety at the Wagga Wagga Experimental Farm in 1901 (Allen 1901). During August and September 1891 the NSW Department of Agriculture obtained 500 olive truncheons from Sir Samuel Davenport’s olive grove in South Australia. Obtained were truncheons from four varieties originally from the south of France: Verdale, Bouquettier, Blanquette, and Pigale. The Wagga Wagga orchard was established in January 1894 with the planting of pears, plums, prunes, mulberries, quinces, persimmons, chestnuts and other fruit trees (figures 5.1 and 5.2). A row of olive varieties had also been planted with an eye on a complete collection of varieties available in Australia (Pelc 1980). Seeds and cuttings had been obtained from Sir Samuel Davenport’s crop in Beaumont, South Australia, as well as Dookie Agricultural College in Victoria. The olive orchard had been planted by June 1894. In the same year the orchardist Benson wrote: These had been split and distributed “to a large number of applicants in all parts of the colony”, many of which had struck root by the time a report was written in late 1892 (Anonymous 1892). The Department of Agriculture also planted olives on its experimental farms of Hawkesbury, and Wollongbar. During a visit to the Wagga Experimental Farm by H.Wood, Undersecretary for Agriculture and W.S. Campbell, Chief Clerk, Dept of “Amongst the trees from California was a very fine collection of olives, so that now we have at Wagga the finest collection and the best varieties in Australia, 35 The spread of Olives on Wagga Wagga Campus as in addition to the Californian trees we have specimens of the best trees that are at present growing in this colony and also in South Australia” (Benson 1894, p. 853-854). Figure 5.4. Aerial view of the Olive orchard, Wagga Wagga Campus of Charles Sturt University. Scale approx. 1: 5500. Date: April 1971. (Source: Orthophotomap 1:4000 Wagga Agricultural College 2717-VIII). 36 Olives in Wagga Wagga Figure 5.5. Cover of the olive extension booklet published by W.J. Allen based on his Wagga Wagga research 37 The spread of Olives on Wagga Wagga Campus Figure 5.6. Example of a descriptive plate (I) contained in Allen's 1902 extension booklet. 1 Amellau, 2 Blanquette, 3 Regalis 38 Olives in Wagga Wagga Figure 5.7. Example of a descriptive plate (VII) contained in Allen's 1902 extension booklet. 19-Verdale, 20 Atro violacea, 21 Gros Redondou, 22 Boutillon 39 The spread of Olives on Wagga Wagga Campus Figure 5.8. The experimental olive oil yield of 1901 (Allen 1902) 40 Olives in Wagga Wagga Table 5.1. The first oil results from the Wagga Wagga Orchard (Allen 1902) Variety Macrocarpa Amelan Pleureur Pigale Dr. Fiaschi Gros Redondou Bouquettier Corregiola Boutillan Blanquette Cucco Date of Harvesting 4 June 1900 6 June 1900 8 June 1900 10 June 1900 12 June 1900 19 June 1900 23 June 1900 28 June 1900 3 July 1900 5 July 1900 10 July 1900 Nº to lb 179 78 160 90 254 129 308 132 200 248 104 In a simultaneous move an orchard had been started at Pera Bore also in 1894, which produced some fruit in 1901 (Allen 1901) and, shortly afterward (1897) an orchard at Native Dog Bore (Coghlan 1899, p. 382). The government statistics for 1895 show that 30 acres of olives had been planted at the Murrumbidgee Experimental Farm (Coghlan 1895, p. 442). Later this figure was reduced to 8 acres (Coghlan 1897b, p. 359). An article on the 1897 open day of the Wagga Wagga Farm mentions that an additional 10 acres were being prepared for the cultivation of olives in an orchard (Wagga Wagga Advertiser 27 November 1897). This area was established in addition to the official collection of olive varieties already planted along Bomen Road (now McKeown Drive). The olive grove is now reputedly the single largest olive gene pool in Australia. Approximately a total of 60 varieties had been introduced to Australia at the turn of the century (Hobham 1995a) and a large percentage of these are represented in the Wagga Wagga Orchard. The orchard book (SA 24/2) shows the list of olives planted along the Average Oil (g)/kg weight of olives Crop load Oil (oz) 2.53 93.75 Heavy 1.5 5.82 125.00 Heavy 2 2.84 875.01 Small 14 5.04 687.50 Small 11 1.79 562.50 Medium 9 3.52 375.00 Small 6 1.47 125.00 Heavy 2 3.44 875.01 Heavy 14 2.27 703.13 Medium 11.25 1.83 62.50 Medium 1 4.36 93.75 Heavy 1.5 southern side of McKeown Drive from the managers house towards the east (starting with modern tree nº 70). All these trees had been planted in 1897 and pruned in 1921 (p. 200). Of these all but the eastern-most tree (ex nº 26, Arecrizza variety) survive. Figure 5.9. Oil press used at the Wagga Wagga Experimental Farm in 1901 (Source: Allen 1901) The history of alternate bearing is documented for the Wagga orchard, with 1902 being a good, and 1903 being a weak year. 41 The spread of Olives on Wagga Wagga Campus The same was observed for the Hawkesbury Orchard (Agricultural Gazette 14, 1903, 822). In 1901 the Wagga olive trees had come into bearing for the first time. The orchardist W.J.Allen prepared a formal description of the varieties planted at Wagga and their potential for pickling and oil production. This series of papers in the Agricultural Gazette of NSW formed the basis for a formal extension document produced by the NSW Department of Agriculture (Allen 1902). This document formed the peak of development of olive research in Wagga Wagga. Most of the data were reproduced over time, with only minimal amendments until 1919. Based on the Wagga experiments Allen (1919) recommended the varieties Bouquettier, Gros Rendonneu, Hardy’s Mammoth, Blanquette, Verdale, and Silver Verdale as the most suitable olive varieties for non-irrigated orchardry in New South Wales. Extending the collection Another emphasis on olive production occurred in the 1930s. In 1932 a number of varieties were obtained as ! Row Tree 6 1 2 truncheons from Navara (Spain). These were planted in orchard block nº 8, and then replanted along McKeown Drive in 1935 (Orchard book SA 24/2 p. 199). The orchard books provide some information on the original layout of the orchard and on the varieties planted in areas 1 and 8 (see figures 5.4 to 5.6). The olive trees planted in area 1 and 8 all had originally been planted from truncheons in 1932 and those in area 8A had been moved to new locations in 1935. All trees in area 1 and area 8 stem from a consignment of olive truncheons from Navara (Spain). Two olives (row 1, trees 2 and 3) had arrived in Wagga Wagga without packaging labels and their variety could not be ascertained at the time of planting. A 1955 orchard map claims them to be Boucchine. Figures 5.10 to 5.12. show the layout of the olive plantations as shown in the orchard books. Figure 5.14. shows the arrangement of the orchard plots as shown in the orchard books. Figure 5.8 provides shows the current orchard layout, based on an orchard map put together in 1963. The current species list has been reproduced in Appendix B2, together with data on planting and introduction. It is to be noted that the species identification as given in the orchard map of 1963 as at odds with the identification given in the original orchard books. South Tree 5 Tree 4 Regalaise Borregiola Languedoc Oji blanco Barouni doncel Large Large fruited fruited " Tree 3 North Tree 2 Tree 1 label lost label lost Bouchine Barouni Salome Corregiola Sevillano Manzanillo Manzanillo Nº 2 Nº 14 3 Oblitza 4 Apple Apple Apple Apple Apple Apple 5 Apple Apple Apple Apple Apple Apple 6 Apple Apple Apple Apple Apple Apple Figure 5.10. Layout of olive planting in area 1 in 1934 (plants shown in italics are no longer present). (Source: NSW Riverina Archives Wagga Wagga SA 24/2, page 2. 42 Olives in Wagga Wagga Figure 5.11. The Wagga Farm looking east as seen from the olive orchard. The row of trees in the right background, running northward (left) from the street) is the remains of large scale olive planting in the 1890s. Tree 1 Tree 2 Tree 3 Tree 4 Tree 5 Tree 6 Tree 7 Tree 8 Tree 9 Tree 10 Tree 11 Tree 12 Tree 13 Tree 14 Tree 15 Row 1 Dr. Fiaschi Lucca Macrocarpa Sevillano Macrocarpa Pecholine St. Chamis Olive de Gras Nevadillo Blanco Nevadillo Blanco Cucco Cucco Hardy’s Mammoth Pera Bore Pera Bore Pera Bore Row 2 Lucca Verdale Pigale Olive de Gras Olive de Gras Belle d’Espagne Seedling 1934 Manzanillo Nº 14 Pendulina Lucca Olive de Gras Hardy’s Mammoth Boutillan Artro Rubens Row 3 Attica Rubra Peccholine Frantojo Oblonga Big Spanish Columella Polymorpha Atro Violecea Regalis Gros Redoneau Amelau Verdale Verdale Boutillan Figure 5.12. Layout of olive planting in area 8A in 1934 (plants shown in italics are no longer present). Notes: A-Almond tree; P-Peach tree. (Source: NSW Riverina Archives Wagga Wagga SA 24/2, page 187-190.) 43 The spread of Olives on Wagga Wagga Campus ! Row Tree 8 South Tree 7 Tree 6 Tree 5 Tree 4 Tree 3 North Tree 2 1A " Tree 1 P 1 2A P Palermo P Barouni P P P P P P 2 P Bouchine P Bouchine P Regalaise Langued oc P Regalaise Langued oc 3A P P P P P P P P 3 P Salome P Oji blanco doncel P Lucques P Lucques 4A P P P P P P P P 4 P Blanquette early P Blanquette late P Borregiolo P Rubra B. d'Aise 5A P P P P P P P P 5 A Oji blanco doncel A Mission A Corregiola A Barouni 6A A A A A A A A A 6 A Manzanillo Nº 14 A Manzanillo Nº 14 A Manzanillo Nº 2 A Manzanillo Nº 2 7A A A A A A A A A 7 A Oblitza A Large Fruited A Large Fruited A Large Fruited 8A A A A A A A A A 8 A Oblitza A Corregiola A Corregiola A Gaeta 9A A A A A A A A A A Ascalano 9 10A A A A A A A A A 10 A A A A A A A A 11A A A A A A A A A Figure 5.13. Layout of olive planting in area 8 in 1934 (plants shown in italics are no longer present). Notes: A-Almond tree; P-Peach tree. (Source: NSW Riverina Archives Wagga Wagga SA 24/2, page 187-190.). 44 Olives in Wagga Wagga Figure 5.14. Layout of the main orchard areas 1941 (Source: NSW Riverina Archives Wagga Wagga SA 24/2) 45 46 Olives in Wagga Wagga Figure 5.15. Phylogeny of the feral olive stock derived from the olice collection at the Wagga Wagga Experimental Farm. 47 The spread of Olives on Wagga Wagga Campus Original layout 1897 1935 expansion 1 2 3 4 5 6 58 59 60 61 62 63 64 65 67 66 68 69 7 8 51 9 36 37 10 15 20 11 16 21 12 17 22 13 14 38 39 40 41 52 42 53 43 54 44 55 45 46 56 57 48 47 50 49 35 34 18 23 10 24 70 25 33 71 32 72 31 73 30 74 75 29 76 77 78 79 28 80 81 82 27 83 84 85 86 26 87 88 89 90 91 92 93 94 Rootstock trails (1948) and reduction in 1961 Current Layout (1998) Figure 5.16. Variations in the layout of the olive orchard 48 Olives in Wagga Wagga Table 5.2 Olive varieties represented at Wagga Wagga Campus (see table B2. for ID Nos.) Variety Amelon (Amellau) Atro Rubens Atro Violacea Attica Barouni Belle d’Espagne (Bella di Spagna) Big Spanish Blanquette Blanquette (Early) Blanquette (Late) Borregiolla Bouchine Bouquettier Boutillon Columella Corregiola Cucco Dr Fiiaschi Frantojo/ Fantago Gaeta Gros Redoneaux HAC [*] Hardy’s Mammoth Large Fruited Lucca Lucques Manzanillo No 2 Manzanillo Nº 14 Marcocarpa Mission Nevadillo Blanco O de Gras Oblitza Oblonga Obtained from Year acquired 1897 Dookie College 1894 California 1914? Davenport Davenport Tizzana Vineyard 1897 1897 1897 1897 Italy Spain France 1894 1894 1897 Davenport ? 1897 1894 Davenport (SA) Dookie College Originally from France France France Greece Tunisia Spain Spain France France France Italy France France France Italy Tuscany, It. Italy Sicily, Italy Hawkesbury Hardy’s (SA) Davenport California Introduced via 1894 49 Spain (?) Spain Italy France Spain Spain Italy Spain Spain France Italy France Allen Mort 1902 1953b ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ The spread of Olives on Wagga Wagga Campus Table 5.2 Olive varieties represented at Wagga Wagga Campus (cont. Year Introduacquired ced via 1932 Originally from Spain Italy France France Italy Allen Mort 1902 1953b ❖ ❖ ❖ ❖ ❖ ❖ ❖ ❖ Variety Obtained from Oje Blanco Doncel Navara Palermo Pecholine Pecholine de St Chamis Pendulina Pera Bore No 1 Pera Bore Exp Farm 1932 Pera Bore No 2 Pera Bore Exp Farm 1932 Pera Bore No 3 Pera Bore Exp Farm 1932 Pigale Davenport 1894 France ❖ Polymorpha Dookie College 1894 France ❖ ❖ Praecox ❖ Regalaise de Languedoc France ❖ Regalis Dookie College 1894 France ❖ ❖ Rubra ❖ Rubra d’Aix [**] France ❖ Salone [***] Greece ❖ ❖ Sevillano Spain ❖ Tarascon France ❖ Verdale Davenport 1894 France ❖ Wagga Seedling Wagga Farm [*]– Hawkesbury Agricultural College. In addition two trees of unknown provenance; [**]- also known as Rubra B. de Aixe; [***] Synonyms: Salome, Salonica. Table 5.3 Olive varieties no longer represented at Wagga Wagga Campus Variety Obtained from Arecluzzo/Arecrizza Ascolano/Ascolana Columbaro Pleureur Ragialo Regati Silver Verdale Year Introduacquired ced via The extension of the collection also allowed to trial seedlings obtained from other experimental farms such as Pera Originally from Italy Italy Italy France Italy Italy France Allen Mort 1902 1953b ❖ ❖ ❖ ❖ ❖ ❖ ❖ Bore (three seedlings) and Hawkesbury Agricultural College, as well as a seedling from Wagga itself. 50 Olives in Wagga Wagga The extension of the collection gave rise to a new series of experiments and a new push for olive culture to be established in NSW (cf. Bryden 1936a-b). During World War II the war effort demanded that all sectors of the Australian economy contribute. As a result the olive oil production in Wagga Wagga was analysed. This was not confined to NSW, as documents from South Australia show (Fowler 1940; Steer 1940). The Wagga orchardist H.C. Mort was the main protagonist following the war, publishing a variety of papers on olive propagation (Mort 1949; 1950a-b; 1951; 1953a-b; 1956) and utilisation (Mort 1951). Figure 5.16 shows the phylogeny of the feral trees on the Wagga Wagga Winery Hill. As can be seen, the flow of cultivars is quite complex. The important element is that the stock used in Wagga has gone through several stages of acclimatisation in Australia, in Dookie College, at Camden Park, Parramatta, and at Samuel Davenport’s estate and other localities in South Australia. Some stock was directly imported to Wagga Wagga. Reducing the collection Olive oil production picked up during World War II but fell again after the war. An economic assessment of in 1947 argued that while there was a demand for olive oil, the market was not sufficient to make an expansion of the olive industry viable (Ballantyne 1947a-b). J.R. Davison, manager of the Agricultural research farm in 1959, recommended that most of the olive trees be removed, as there was no market for olive oil (unless the harvest failed elsewhere), and only a limited market for pickled olives. According to Davison, a that time three distinct groups of olives existed: 1) original plantings, the more than 60 years old, comprised of 644 trees; 2) plantings of Navara olives, then 32 years old, comprised of 48 trees; and 3) rootstock trials using Manzanillo Nº 14, grafted on various root stocks, comprised of 70 trees. Rootstock Trials In 1950 a number of rootstock and grafting trials was conducted when Manzanillo Nº 14 were grafted onto a variety of rootstocks. These rootstocks had also formed the basis of a vegetative propagation experiment two years earlier (Mort 1950a). The remains of these rootstock trials survive as a row of olives running north-south just east of the winery building. Figure 5.13 shows the lay-out of the rootstock trials of 1948-49 conducted in sections Ia and Ib. These data have been gleaned from orchard maps dating to 1955, 1960 and 1961. The lay-out of the present collection can be seen from figure 5.15. In addition, two rows of mature olive trees set at right angles to each other, exist at the eastern end of McKeown Drive, bounding paddock nº 18 of the Agricultural Research Institute’s research plots. These trees seem to be the remnants of an orchard. from the overall size of the trees it appears likely that the olives would date to the phase of initial planting in 1897. It was recommended “to retain the line of trees along the avenue [=McKeown Drive] and such trees elsewhere as are required to maintain one of each of the 51 varieties. (Davison 1959).” 51 ! Row Tree 6 1935 1 2 3 Oblitza South Tree 5 Tree 4 Tree 3 North Tree 2 " Tree 1 Reglaise label lost label lost Languedoc Borregiola (Bouchine?) (Bouchine?) Bouchine Oji blanco Barouni Barouni Salome Corregiola doncel Large Large Manzanillo Sevillano Manzanillo fruited fruited Nº 2 Nº 14 1962 1 2 3 Oblitza Regalaise label lost label lost Languedoc Borregiola (Bouchine?) (Bouchine?) Bouchine Ascolano Rubra d’Aix Mission Gaeta Salome (Oblitza !) Large Blanquette Lucques Palermo Manzanillo fruited Nº 2 (early) Figure 5.17 . Layout of olive planting in area 1 before and after the reworking of 1962). (Source: NSW Riverina Archives Wagga Wagga SA 24/2 and orchard plan 1963). Figure 5.18 The 1935 trials as seen in 1953 (Source: Mort 1953). 52 useable. This affected trees nº 8, 15, 17, 18, 19, 20, 22,and 23. Some doubt surrounds the identification of Ascolano (tree nº 15), however, because the tree identified as Ascolano on the 1960 and 1961 orchard plans is the variety Oblitza according to the orchard book. As the 1951, 1960, 1961 and 1963 plans do not identify trees nº 47 and 55, which the orchard book identifies as Hardy’s Mammoth, it is likely that a transcription error occurred and that the wrong tree had been kept. Today, in total five varieties, almost all Italian varieties imported before 1897, have been lost as a result of the orchard reduction and subsequent mix-ups in the 1950s. These are Arecluzzo/Arecrizza, Ascolano, Columbaro, Ragialo, Regati, and Silver Verdale. Some time between the completion of the orchard book and the numbering of the tress some transcription errors must have occurred. Table B2 spells out the varieties as shown on the 1963 orchard map with deviations in the orchard book shown in brackets. Inconsistencies occur in numbers 8, 15, 17, 18, 19, 20, 22, and 23. In addition trees 47 and 55, both labelled as ‘unknown on the 1963 map, could be identified as ‘Hardy’s Mammoth’. Following the removal of most of the trees in te olive orchard some isolated olive trees had been retained to maintain the varietal collection. According to a hand drawn orchard map the collection was rearranged in 1962 and some olives in the western part of block I were ‘reworked’ to maintain the varietal collection, but to make block VIII more Acknowledgments Doyle (Pest Control Officer, Grampians National Park, Department of Natural Resources and the Environment, Victoria); Noel MacDonald (Pest Control Officer, Chiltern, Department of Natural Resources and the Environment, Victoria); Derek Moore (School of Agriculture, CSU Wagga Wagga); Petina Pert (Department of Natural Resources and the Environment, Victoria); Tim Tunison (U.S. National Park Service, Hawai’i). The study reported here was made possible by a number people through their assistance in the field and laboratory, as well as through the provision of data and information. Their contribution is gratefully acknowledged: Don Boadle (Riverina Archives, Wagga Wagga). David Cooke (Animal and Plant Control Commission, South Australia, Adelaide); Peter Cuneo (Mt. Annan Botanical Gardens); Jim Dellow (NSW Dept of Agriculture, Orange); Karen 53 The spread of Olives on Wagga Wagga Campus Bibliography Bulletin Nº. 167. Sydney: Charles Potter, Government Printer. Adelaide Chamber of Commerce (1875) South Australian Industries. Cultivation of the olive and manufacture. Adelaide: Adelaide Chamber of Commerce. [not seen] Anonymous (1830a) The olive. Chronology of introduction into New South Wales. Agricultural Gazette 29 March 1830, p. 3. [not seen] Allen, F.W. (1901a) Olive culture. New South Wales Department of Agriculture Miscellaneous Publication Nº 421. 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[not seen] Tunison, Tim (1997) US National Park Service Hawaii, e-mail on olive spread and eradication, 27 June 1997. 78 Olives in Wagga Wagga Appendices 79 The spread of Olives on Wagga Wagga Campus Appendix A — Point data for feral olives in Australia Victoria Date 04 May 1992 03 Sep 1992 01 Jan 1991 07 Oct 1993 01 Jan 1991 05 Oct 1993 05 Oct 1993 06 Oct 1993 27 Aug 1987 01 Jan 1990 01 Dec 1984 01 Mar 1987 04 Apr 1995 23 Jan 1987 26 Ju1 1984 20 Sep 1989 01 Jan 1992 31 Aug 1992 07 Mar 1995 19 Ju1 1989 26 Sep 1990 28 May 1990 09 May 1990 15 May 1990 Location 141°49'44” 142°06'53” 143°20'48” 143°31'50” 143°32'14” 143°32'15” 143°32'20” 143°33'20” 143°48'00” 144°00'00” 144°47'32” 144°47'58” 144°50'08” 145°00'47” 145°35'00” 145°35'00” 145°41'03” 145°41'21” 145°41'26” 145°45'00” 146°30'37” 148°09'55” 148°10'00” 148°12'00” 36°45'49” 36°45'35' 36°16'03” 36°10'32 36°10'28” 36°10'30” 36°08'40” 36°09'28” 36°35'50” 38°15'00” 37°55'33” 37°38'34” 37°42'24” 37°48'10” 36°15'00” 36°25'00” 36°24'12” 36°21'33” 36°05'20” 36°25'00” 36°12'56” 37°30'58” 37°30'00” 37°28'00” 80 Altitude n/a n/a n/a n/a n/a 110 110 n/a 280 0 n/a 140 20 020 n/a n/a 180 n/a n/a n/a 360 n/a n/a n/a Olives in Australia Appendix B — Olive varieties currently planted at Wagga Wagga Table B.1. Current list of olive varieties planted at Wagga Wagga Campus (nos refer to trees in the orchard) Tree No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Old ID No. 12 14 46j 12a 91 11 1L 1i 50 40 ? ? 13a 42 48 43 49 45 44 9e 47 41 52 50a 51 46 27 46a 28 46b 29 46c Variety (Orchardbook) Oje Blanco Doncel Corregiolla Manzanillo Nº 14 Oje Blanco Doncel Blanquette (Late) Barouni Sevillano Sevillano Large Fruited Bouchine Unknown (Bouchine?) Unknown (Bouchine?) Borregiolla Regalaise de Languedoc Ascolano Salone Gaeta Mission Rubra d’Aix Blanquette (Early) Manzanillo No 2 Palermo Lucques Large Fruited Oblitza Manzanillo Nº 2 on Nevadillo Blanco Manzanillo Nº 2 on Nevadillo Blanco Manzanillo Nº 2 on Nevadillo Blanco Manzanillo Nº 2 on own roots Place of Origin Seeds/cutting obtained from Year of planting rootstock trial Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Navara Wagga Wagga 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1932-34 1950 rootstock trial Wagga Wagga 1950 rootstock trial Wagga Wagga 1950 rootstock trial Wagga Wagga 1950 81 The spread of Olives on Wagga Wagga Campus Table B.2 Current list of olive varieties planted at Wagga Campus Tree Old ID No. No. 30 46d Variety (Orchardbook) 31 46e 32 46f 33 46g 34 46h 35 46i 36 16 Manzanillo Nº 2 on own roots Manzanillo Nº 2 on own roots Manzanillo Nº 2 on own roots Manzanillo Nº 2 on Oje Blanco Doncel Manzanillo Nº 2 on Oje Blanco Doncel Manzanillo Nº 2 on Oje Blanco Doncel Dr Fiiaschi 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 15 17 1j 17a 18 3a 19 19 20 20a unknown 21 22 23 24 25 46k 26 unknown 27 28 29 30 31 32 33 21 Lucca Marcocarpa Sevillano Marcocarpa Pecholine de St Chamis Olive de Gras Nevadillo Blanco Nevadillo Blanco Cucco Cucco (Hardy's Mammoth) Pera Bore No 1 Pera Bore No 2 Pera Bore No 3 Belle d’Espagne Wagga Seedling 1934 Manzanillo Nº 14 Pendulina (Hardy's Mammoth) Boutillon Atro Rubens Attica Rubra Pecholine Frantojo Oblonga Big Spanish Place of Origin Seeds/cutting obtained from rootstock trial Wagga Wagga Year of planting 1950 rootstock trial Wagga Wagga 1950 rootstock trial Wagga Wagga 1950 rootstock trial Wagga Wagga 1950 root graft trial Wagga Wagga 1950 root graft trial Wagga Wagga 1950 Tirazza Vineyard 1950 Pera Bore Farm Pera Bore Farm Pera Bore Farm Wagga Wagga 82 1935 1950 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 1935 Olives in Australia Table B.2 Current list of olive varieties planted at Wagga Campus Tree No. 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 Old ID No. 34 35 36 37 38 39 1h 1g 1f 1e 1d 1c 2 1b 1a 1 3 4a 5a 5 6c 1k 6b 6a 6 7 8 91 92 93 94 4 9 10 8a Variety (Orchardbook) Place of origin Columella Polymorpha Atro Violacca Regalis Gros Redoneaux Amelon Sevillano Sevillano Sevillano Sevillano Sevillano Sevillano Big Spanish Sevillano Sevillano Sevillano O de Gras Verdale Bouquettier Bouquettier Tarascoa Sevillano Tarascoa Tarascoa Tarascoa Pigale Hawkesbury Agricult. College Verdale Blanquette Praecox Hawkesbury Agricult. College Seeds/cutting obtained from Hawkesbury Ag Coll Hawkesbury Ag Coll 83 Year of planting 1935 1935 1935 1935 1935 1935 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897 1897