DOCSLIB.ORG

Planning and Planting a New Traditional Orchard

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Planning and Planting a New Traditional Orchard Guidance Notes for PLANNING AND PLANTING A NEW TRADITIONAL ORCHARD TRADITIONAL ORCHARDS traditional orchards should be avoided where Traditional or old orchards are a distinctive there is evidence of archaeological and feature in the local landscape. They can be historical features unless the site was recognised by the wide planting distance of previously an orchard. large majestic trees of old and often scarce varieties on a standard rootstock. These Avoid a planting where a tree of the same orchards consist of apple, pear, cherry, plum type stood previously due to specific replant and damson which are at least fifty years old. This also includes cob nuts (Hazel), which are SPECIFIC REPLANT DISEASE grown in orchards known as platts. These Specific replant disease is found in the soil traditional orchards contain a large number of where fruit trees were previously grown. The varieties and provide a valuable habitat for disease is caused by the build up of nematodes flora and fauna. and pathogenic fungi in the soil; mature trees are large enough to withstand any adverse effects. However, when the original trees are removed at the end of their life a high proportion of these harmful organisms will remain in the soil. New young trees planted into this soil will struggle to establish. Overcome the effects of replant disease by either planting 1m to one side of the original planting keeping to the same side in each row or incorporating compost into the planting hole, providing nutrients and conserving moisture by mulching. Alternatively, planting apple or pear trees where cherry, plum and damson were or vice versa can reduce the risk of this disease. Commercial production of fruit has changed dramatically over the last fifty years with the disease which will inhibit good establishment. mass removal of less viable traditional orchards In general fruit trees love sun but hate leaving just a few scattered throughout the waterlogged roots and need space. Some countryside. Now the true value of these cultivars will put up with adverse conditions. neglected traditional orchards as a landscape feature is being realised, instigating the Once the species have been decided, the restoration of those surviving orchards. This varieties should reflect those that have been will help to conserve our local heritage and grown traditionally in that area, as well as increase the biodiversity of wildlife. consideration for the future use of the fruit. Traditionally the orchard was grazed by sheep developing the pasture and creating a more SITE SELECTION extensive wild flower population. Landscape and elevation is important but fruit is grown in a wide variety of locations, typically A SUITABLE SITE FOR A TRADITIONAL between sea level and about 400 feet (122 ORCHARD metres) above sea level, although in There are various aspects which should be favourable situations, orchards can be grown considered before embarking on planting a new satisfactorily at higher altitudes. Fruit can be traditional orchard. The site should not impact grown on low lying levels, such as the Isle of on the landscape but reinforce the local Ely or undulating countryside like that found in landscape character and help to link with the Mid Kent Downs. existing habitats. In general, planting of new traditional orchards should be focused where Sheltered sites with protection from prevailing traditional orchards are a typical landscape winds generally facing south or south-westerly feature are preferable. Natural windbreaks which filter and slow the wind can be planted where they It is important to initially discover as much do not exist. Too much shade from nearby historical information about the site on which vegetation can cause drawing growth on the you propose to plant an orchard before trees and a lack of light will result in the fruit committing to your chosen species. Past not developing or ripening. Avoid really steep planting will determine the management slopes and sites prone to spring frosts and required for the new orchard. Planting of new strong winds. GRASSLAND If the grassland is rich in FROST species it may be that the A late frost can decimate blossom resulting in site has greater the potential crop being lost. conservation value as it stands rather than planting Avoid planting in Frost Pockets which are fruit trees, seek advice created when cold air becomes trapped in low from an ecologist. lying land such as valleys. Trees planted on these sites could suffer damage if frost builds RAINFALL up at critical growing periods, causing damage An average annual rainfall of 50 – 75 cm is to developing shoots and killing flowers. adequate; too much rain during the summer Where frost is a problem it is better to plant may cause fungus problems reducing the later flowering species or varieties which are quality of the crop, particularly in cherries less susceptible to frost damage. When which will split therefore resulting in the loss of planting on a slope, do not plant a hedge on crop. With low rainfall, fruit quality may suffer the down slope side. This will trap the frost and irrigation may be needed to establish and prevent it from rolling down hill away from young trees. the trees. WIND WILDLIFE If the site is windy consider planting a The planting of a new traditional orchard can windbreak, this could be a fruit hedge or a bring huge ecological benefits to the area range of other species e.g. Alder. Ideally particularly if it joins and forms a network of windbreak species should be fast growing and orchards so that there is a large enough area respond well to trimming since they can for wildlife to travel between varying orchard provide excellent protection yet not drain the habitats. These habitats are an important soil of essential nutrients. Leave enough space feature for a wide range between the fruit trees and the windbreak to of species such as bats, avoid competition and allow movement around birds, wildflowers, the orchard. Exposure to wind will make it lichens, fungi, small difficult to establish and train new trees, wind mammals and insects rocking will damage roots leading to disease. including the Noble The planting of a wind break will also reduce Chafer beetle, now an the possibility of wind endangered species. frost and provide better Combined with conditions for bees, hedgerows and the essential for pollination. orchard floor, orchards provide a haven for a The fruit will also have wide range of wildlife if managed sensitively. better protection from the wind during ripening. SOIL Orchards can be found on a wide range of soil If a windbreak is needed types however, fruit trees prefer a good depth preferably plant it before of fertile, well drained, loamy soil which will the fruit trees are planted. have the capacity to hold water yet with good Make sure you plant drainage. Dig a hole to have a look at the soil species that are type. indigenous to the area such as Rosa canina (Dog . Sandy soils could result in leaning trees, Rose) Sambucus (Elder), which may eventually fall down. They could Crateagus (Hawthorn), also be susceptible to drought. Corylus (Hazel), Prunus . Clay ground which is often waterlogged, (Wild Cherry), and Malus especially over winter, is unsuitable (Crab Apple) these will . A loam soil which has nearly equal provide both fruit for quantities of clay to silt to sand with plenty wildlife as well as of humus is ideal. This soil will maintain additional fruit from the good moisture levels. orchard. Once a windbreak is established Test your soil to check the ph (acidity or vegetation can be allowed alkalinity); a reading of between 6.3 and 6.8 is to develop at the base ideal. Also test for other nutrient status of the which will provide a soil which can be corrected before planting. valuable habitat for beneficial insects and other wildlife. TREE SELECTION Fruit trees are sold in a Plums – The Brompton rootstock is very number of forms, potted or vigorous and suitable for standards. Some bare rooted with varying varieties, like Pershore, produce fine trees on rootstocks depending on what their own roots. Many damsons will come is required. If you are planting almost true to type from seed. Plums should a traditional orchard, be planted at a spacing of 6 - 8 metres purchasing of trees as bare- approximately 185 - 260 trees/ha. rooted one year (feathered maidens) or two year (straight VARIETIES lead) are generally the most Varieties indigenous or historically grown in the accepted forms. local area should be chosen initially to preserve historical continuity and cultural heritage and TREE SIZE reinforce local distinctiveness. Local fruit Rootstocks determine the tree's growth habit groups will be able to give advice. To obtain and growth rate, hardiness, cropping, disease the varieties on the traditional rootstocks will resistance and eventual size. mean ordering from a specialist nursery at least one year ahead of when you plan to plant. Choose a disease resistant variety so you can raise it organically. A mix of varieties is needed to ensure cross pollination and fruit-set. Take careful note in your planning of varieties to pollination period, Very Dwarf Dwarf Semi Dwarf Semi Vigorous Vigorous cropping season, keeping qualities and distinctiveness of the local area. Location is Dwarfing rootstocks which are used to grow also important since some varieties are more bush trees are not suitable for the full-size suited to different areas. Specialist tree (standard) trees planted in traditional nurseries are happy to advise you on suitable orchards. These trees require a vigorous varieties. rootstock to develop a good root system to with-stand the risks of grazing animals and POLLINATION support the large tree canopy that will develop.
Load more

Recommended publications
  • Non-Fumigant Alternative Soil Management Practices for Mitigating Replant Disease of Fruit Trees
    NON-FUMIGANT ALTERNATIVE SOIL MANAGEMENT PRACTICES FOR MITIGATING REPLANT DISEASE OF FRUIT TREES: MECHANISMS CONTRIBUTING TO PRATYLENCHUS PENETRANS SUPPRESSION by Tristan Tanner Watson B.Sc. (Honours), The University of British Columbia, 2013 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE COLLEGE OF GRADUATE STUDIES (Biology) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) April 2018 © Tristan Tanner Watson, 2018 The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a dissertation entitled: NON-FUMIGANT ALTERNATIVE SOIL MANAGEMENT PRACTICES FOR MITIGATING REPLANT DISEASE OF FRUIT TREES: MECHANISMS CONTRIBUTING TO PRATYLENCHUS PENETRANS SUPPRESSION submitted by Tristan Tanner Watson in partial fulfillment of the requirements of the degree of Doctor of Philosophy . Dr. Louise Nelson, Irving K. Barber School of Arts and Sciences Co-supervisor Dr. Thomas Forge, Agriculture and Agri-Food Canada Co-supervisor Dr. Melanie Jones, Irving K. Barber School of Arts and Sciences Supervisory Committee Member Dr. José Úrbez-Torres, Agriculture and Agri-Food Canada Supervisory Committee Member Dr. Paul Shipley, Irving K. Barber School of Arts and Sciences University Examiner Dr. Mario Tenuta, Faculty of Agricultural and Food Sciences, University of Manitoba External Examiner ii Abstract Replant disease presents a significant barrier to the reestablishment of orchards. In the Okanagan Valley, Canada, the root-lesion nematode, Pratylenchus penetrans, is widely distributed and implicated in poor growth of newly planted fruit trees. Restrictions on soil fumigants have generated interest in alternative management strategies for disease control. Using a combination of greenhouse and field experiments, this dissertation evaluated the effects of composts, bark chip mulch, biocontrol inoculation, and two different irrigation systems (drip emitter and microsprinkler) on the establishment of apple and sweet cherry trees in old orchard soil, P.
    [Show full text]
  • Apple Replant Disease – Theory Versus Practice, an Overview of Known Controlling Methods
    Apple Replant Disease – Theory versus practice, an overview of known controlling methods By H. Meints & A. Toma Summary In the past decades, several researchers focused their attention on identifying the causes of Apple Replant Disease, along with finding new strategies to prevent and control this important threat to fruit production. From leaving the land fallow, using rotation and control crops to soil fumigation and organic amendments, all has been considered over time. Nowadays, there is a visible tendency on using environmental friendly solutions, along with an increase in banning regulation regarding the chemical products used in EU agriculture sector. Therefore, solutions such as Brassica seed meal soil amendments developed by Mark Mazzola, or Herbie invented by Thatchtec in The Netherlands are the proof that alternatives exist and can be efficient. Field trials have resulted in an almost 100% pathogen suppression and significant yield increase. However, in the case of Herbie and particularly in the trials conducted at Fleuren Tree Nursery in Baarlo, experiments are pushed to their extremes trying to monitories the method’s efficiency and limitations, regarding time frames, larger range of temperature and dosage. What differentiate this later trial from the ones conducted by Mark Mazzola in the US, is that at Fleuren, testing lots are bigger. So far, the results obtained give a positive trend and special attention should be paid not only to the unpredictable weather conditions and temperature from the last period (that are obviously different from the usual values) that can affect the trials, but also try to observe and monitor the soil biodiversity along the tests, complementary to the plant behavior.
    [Show full text]
  • Growing Young Fruit Trees in Old Orchard Sites Introduction
    A P a c i f i c N o rt h west Ext e n s i o n Pu b I i c at i o n • WASHINGTON • IDAHO • OREGON • Mike Willett, Robert Stevens and Tim Smith Growing Young Fruit Trees in Old Orchard Sites Introduction The orchard replant problem is any situation in which the replanted trees do not grow to the grower's expectations. If you have lowered your expectations due to a previous lack of success, the replant problem may result in an unprofitable orchard. In Pacific Northwest orchards, the problem has been most obvious when apples were planted after apples. The apple replant problem has been identified in virtually every fruit growing region in the world and similar problems have been documented for many fruit crops. Moreover, throughout agricultural history there are cases where growth of a particular crop has been reduced or prevented by continuously cropping it in the same field. The reasons for these yield reductions or failures are the changes that the crop and its production practices cause in the soil. These include chemical, physical and biological changes. Some examples are toxic spray residues such as lead arsenate, low soil pH caused by nitrogen fertilizer application, soil compaction caused by heavy equipment, poor water management, buildup of soil organisms that damage tree roots or a combination of these. Older orchards have extensive root systems and are apparently more resistant to these soil changes. They show fewer ill effects than new trees. However, decline in the vigor and performance of older orchards has been attributed to some of these factors.
    [Show full text]
  • Determining the Occurrence of Replant Disease in British Columbia Orchard and Vineyard Soils by Pasteurization1 R.S
    . .. Canadian Plant Disease Survey 68:2,1988 149 Determining the occurrence of replant disease in British Columbia orchard and vineyard soils by pasteurization1 R.S. Utkhede and Thomas S.C. Li Experiments were conducted to determine by response to soil pasteurization what sequence of fruit trees or grapevines will grow without damage by replant disease after removing a particular fruit tree or grapevine crop. Apple seedlings developed replant disease in apple, peach, cherry, pear, and grape soils. Peach trees may be planted after any fruit tree or grapevine crop. Plums will grow normally when planted after grapes or any fruit trees except peach. Testing of orchard and vineyard soil is required for the proper diagnosis and treatment of replant disease. Can. Plant Dis. Surv. 68:2, 149- 151, 1988. On a realis6 des experiences afin de dbterminer, en se fondant sur la reaction B la pasteurisation du sol, quelle sequence d'arbres fruitiers ou de vignes ne serait pas endommagee par la maladie de la replanta- tion aprbs avoir bliminb une culture particulibre d'arbres fruitiers ou de vignes. Les plantules de pommiers plantees dans des sols ou l'on avait antbrieurement cultive des pommiers, des pachers, des cerisiers, des poiriers et des vignes ont Bt6 frappbes par la maladie de la replantation. En outre, les pachers peuvent 6tre plantes dans un sol ou a poussb n'importe quel arbre fruitier ou n'importe quelle vigne. Les pruniers croitront normalement s'ils sont plantbs apres des cultures de vignes ou d'un arbre fruitier, B I'exception du pacher. II est necessaire d'analyser les sols de vergers et de vignobles afin d'etablir un diagnostic exact et de determiner le traitement des plantes atteintes de la maladie de la replantation.
    [Show full text]
  • Pests and Diseases Guide
    Pests and Diseases Pests and Diseases - It used to be that you could look along rows upon rows of chemicals to kill or cure all manner of plant ills. This was a hangover from the second world war when anything that hindered the nation’s food supply had to be got rid of at any cost. Today thankfully we have woken up to the possible long term effect of indiscriminate use of chemicals and so our choice of product has been greatly reduced. If our arsenal of weapons against the onslaught of marauding pests and diseases has been so depleted you may well ask yourself what hope is there to have a healthy garden. Let us go back a step and think about dealing with the cause rather than the symptoms of plant health issues. First let us agree on the principle that nature abhors a void, so as one species or variety is displaced another comes in, sometimes more problematic to take its place. That would suggest that the compromise would be to have a balanced approach and to work towards creating a harmonious situation between our desires for perfection and natures vagaries. Why do plants suffer from pests and diseases? We might apply the same logic as we would do to ourselves. Sometimes it can be a genetic disposition to a certain illness but often in less severe cases it can be due to stress or failing to take adequate care of ourselves. So let us look at some possible causes before we reach for the chemicals. Stress Right from the onset are we working with nature or trying to persuade a plant that it must grow in a particular spot rather than considering whether it is suitable for such a growing position.
    [Show full text]
  • Prof. Dr. Hrotkó Károly Raising Grafts
    Raising grafts and trees in the nursery Aims of raising grafts . Propagation trees and shrubs difficult to propagate by autovegetative means . Production of composite plants with traits determined by more than one genom . Production of trees and shrubs with special growth habits (sphaeroid, compact, hanging, shrubs on high trunks, combi-trees, trained forms) Raising grafts Prof. Dr. Hrotkó Károly 2 Stages of graft raising . Raising of rootstock: until the required size - for bench grafting in previous years - grafting in root collar 6 – 12 month - for topworking 2-4 years . Creation the graft - during rootstock raising: budding in autumn, grafting in spring as the rootstock reached the required height - separate process: bench grafting on bareroot or potted rootstocks . Raising grafts until the required size and quality: Raising grafts Prof. Dr. Hrotkó Károly 3 Classification of fruit trees by ENA standards . One year grafted trees (maidens) . Feathered fruit tree (2-3 years) - minimum two years cultivation at wide spacing, - side branches may have been pruned appropriate to species/cvs . Pyramid fruit tree - pyramidal appearance, straight leading shoot - regularly distributed main branches not lower than 30 cm from graft . Bush fruit tree: same as pyramid but no leading shoot . Branched fruit tree (Knipboom) - one year graft cut back at min. 40 cm from soil level - well distributed 3-4 shoots on the new growth between 50-100 cm from soil level . Standard trees: dwarf, short, half, full standard . Trained forms: horizontal cordons (one or two arms), oblique palmet (single or two stage), single or double U, two stage U, horizontal espalier, fan. Raising grafts Prof.
    [Show full text]
  • UC Riverside UC Riverside Electronic Theses and Dissertations
    UC Riverside UC Riverside Electronic Theses and Dissertations Title Investigations into Peach Replant Disease and Nematophagous Fungi Permalink https://escholarship.org/uc/item/2249179h Author Yang, Jiue-in Publication Date 2012 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California UNIVERSITY OF CALIFORNIA RIVERSIDE Investigations into Peach Replant Disease and Nematophagous Fungi A Dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Plant Pathology by Jiue-in Yang September 2012 Dissertation Committee: Dr. James Borneman, Chairperson Dr. Jörn Ole Becker Dr. Michael D. Coffey Copyright by Jiue-in Yang 2012 The Dissertation of Jiue-in Yang is approved: ___________________________________________________ ___________________________________________________ ___________________________________________________ Committee Chairperson University of California, Riverside ABSTRACT OF THE DISSERTATION Investigations into Peach Replant Disease and Nematophagous Fungi by Jiue-in Yang Doctor of Philosophy, Graduate Program in Plant Pathology University of California, Riverside, September 2012 Dr. James Borneman, Chairperson The research described in this dissertation examined peach replant disease and two nematode biological control systems using traditional plant pathology methods and molecular microbial ecology methods. In Chapter 1, the experiments identified microbes associated with peach replant disease in soils with various levels of disease symptoms. To identify bacteria, fungi and oomycetes associated with the replant disease, culture and culture-independent analyses were performed on DNA extracted from plant roots. Among the most abundant bacterial operational taxonomic units, 27 were negatively correlated with peach top weights while 10 were positively correlated. Among the most abundant fungi and oomycetes, negative and positive associations were identified between P.
    [Show full text]
  • Replant Diseases of Apple in the Netherlands
    634.11:632.2+632.651(492) MEDEDELINGEN LANDBOUWHOGESCHOOL WAGENINGEN • NEDERLAND • 68-13(1968 ) REPLANT DISEASES OF APPLE IN THE NETHERLANDS (Samenvatting: Herbeplantingsziekten bijappel in Nederland) H. HOESTRA Department of Nematology Agricultural University, Wageningen, The Netherlands Guestworker of TNO, The Hague (Received 25-VII-1968) H.VEENMA N & ZONEN N.V. - WAGENINGEN - 1968 CONTENTS 1. GENERAL 1 1.1. Introduction 1 1.2. Applegrowin gi nth eNetherland s 1 1.3. Replant diseases,introductio n andterm s 3 1.4. Theoccurrenc eo fappl ereplan t diseasesi nth eNetherland s 4 1.4.1. Generalobservation s 4 1.4.2. Factorsinvolve d 5 1.5. Outlineo fth eresearc hprogramm e 6 1.6. Materialsan dmethod s 6 1.7. Abbreviations 9 2. THE ROLE OF NEMATODES 10 2.1. Introduction 10 2.2. Symptoms 10 2.3. Occurrenceo fplan t parasiticnematode s inappl eorchard san dnurserie s ... 11 2.4. Importanceo fnematode s 13 2.5. Discussionan dconclusion s 17 3. SPECIFIC APPLE REPLANT DISEASE, GENERAL ASPECTS 20 3.1. Symptomsan dcharacteristic s 20 3.2. Experimental demonstration 25 3.3. Experimentalcharacterization , effect of various treatments 28 3.3.1. Introduction 28 3.3.2. Depth ofoccurrenc ei nth esoi l 28 3.3.3. Leachatesfro m applesoil s 29 3.3.4. Nutrient solutionsfro m mistculture so fappl e 30 3.3.5. Appleroot s 30 3.3.6. Phloridzin 31 3.3.7. Mixingsoil s 31 3.3.8. Soilmoistur econten t 33 3.3.9. Soiltemperatur e 34 3.3.10. SoilpH 34 3.3.11. Gibberellicacid 37 3.3.12.
    [Show full text]
  • Methodology and Viability of Re-Establishing Commercial Boronia Megastigma Plantations
    Methodology and viability of re-establishing commercial Boronia megastigma plantations A report for the Rural Industries Research and Development Corporation by Doris Blaesing & Lee Peterson Serve-Ag Pty Ltd April 2002 RIRDC Publication No 02/007 RIRDC Project No: SAG-1A © 2002 Rural Industries Research and Development Corporation. All rights reserved. ISBN 0 642 58406 0 ISSN 1440-6845 Methodology and viability of re-establishing commercial Boronia megastigma plantations Publication No. 02/007 Project No. SAG-1A The views expressed and the conclusions reached in this publication are those of the author and not necessarily those of persons consulted. RIRDC shall not be responsible in any way whatsoever to any person who relies in whole or in part on the contents of this report. This publication is copyright. However, RIRDC encourages wide dissemination of its research, providing the Corporation is clearly acknowledged. For any other enquiries concerning reproduction, contact the Publications Manager on phone 02 6272 3186. Researcher Contact Details Dr Doris Blaesing Dr Lee Peterson Serve-Ag Pty Ltd Serve-Ag Pty Ltd PO Box 690, DEVONPORT, TAS 7310 PO Box 149, GLENORCHY, TAS 7010 Phone: 03 6427 0800 Phone: 03 6233 5522 Fax: 03 6427 0801 Fax: 03 6273 6688 Email: [email protected] Email: [email protected] In submitting this report, the researcher has agreed to RIRDC publishing this material in its edited form. RIRDC Contact Details Rural Industries Research and Development Corporation Level 1, AMA House 42 Macquarie Street BARTON ACT 2600 PO Box 4776 KINGSTON ACT 2604 Phone: 02 6272 4539 Fax: 02 6272 5877 Email: [email protected].
    [Show full text]
  • Causes and Control Measures of Apple Replant Problem
    Natural Resource Management Article AR2090 DOI: HTTPS://DOI.ORG/10.23910/1.2020.2090 International Journal of Bio-resource and Stress Management Print ISSN 0976-3988 June 2020 Online ISSN 0976-4038 IJBSM 2020, 11(3):246-257 Review Article Natural Resource Management Causes and Control Measures of Apple Replant Problem N. C. Sharma1*, Pramod Verma1, Niranjan Singh1 and Babita2 1Dept. of Fruit Science, Dr. Y S Parmar University of Horticulture and Forestry, Nauni, Solan- Himachal Pradesh (173 230), India 2Horticulture Development Officer, Government of Himachal Pradesh, India Abstract Open Access Corresponding Author Replant problem is a situation resulting in suppression of growth and poor productivity of the trees planted on old orchard sites and makes the plantations N. C. Sharma un-economical. It is a serious malady throughout the world in some fruit crops e-mail: [email protected] where the new plantations are done at the old orchard sites. Although replant problem is known to exist for many decades but greater attention was paid to Citation: Sharma et al., 2020. Causes and Control Measures of Apple Replant Problem-A Review. this phenomenon only when Thompson (1959) while working at East Malling International Journal of Bio-resource and Stress Research Station, United Kingdom observed poor growth of apple and cherry Management 2020, 11(3), 246-257. HTTPS://DOI. on old plantation sites. This observation strongly stimulated replant research in ORG/10.23910/1.2020.2090. different parts of the world. Western Himalayan states of India are also facing the replant problem where majority of apple orchards have out lived their Copyright: © 2020 Sharma et al.
    [Show full text]
  • Ecologically Sound Soil Management of Tree Fruit Replant Disease
    IDENTIFICATION OF PHOSPHATE SOLUBILIZING BACTERIA AND EVALUATION OF THEIR APPLICATION WITH INSOLUBLE PHOSPHORUS FERTILIZERS TO SOILS FROM CERTIFIED ORGANIC ORCHARDS AFFECTED BY REPLANT DISEASE by MOLLY ADAIR THURSTON B.Sc., The University of Guelph, 2004 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in THE COLLEGE OF GRADUATE STUDIES (Biology) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) August 2013 © Molly Adair Thurston, 2013 ABSTRACT Replant disease (RD) affects the growth and establishment of young fruit trees in old orchard soils. Organic management strategies are needed as an alternative to chemical controls. Improved phosphorus (P) nutrition to stimulate root growth and improve tree establishment is a well-established strategy; however, only insoluble Rock Phosphate (RP) and Bone Meal (BM) inputs are available to Canadian organic growers. The ability of specific plant growth promoting rhizobacteria to solubilize phosphate may improve P availability and its uptake in young apple trees, replanted into inoculated orchards. In this study, 101 bacteria isolated from the roots of legumes from Saskatchewan soils were screened for P solubilization. Thirty-four of these bacteria were positive for P solubilization as measured by halo diameter production on calcium phosphate medium. Twelve isolates showing the largest halo diameters and three known P solubilizing bacteria (PSB) were compared on three media: calcium phosphate, Pikovskaya (PVK) and PVK with bromophenol blue. All twelve isolates previously identified as Pseudomonas, Rhanella, Serratia and Klebsiella spp. solubilized P on all media, although the halo diameters varied among media. The isolates were tested in liquid culture, where a marked decrease in the pH of the solution was observed and six isolates were identified for further testing in growth pouch assays in the presence of insoluble P.
    [Show full text]
  • Methodology and Viability of Re-Establishing Commercial Boronia Megastigma Plantations
    Methodology and viability of re-establishing commercial Boronia megastigma plantations A report for the Rural Industries Research and Development Corporation by Doris Blaesing & Lee Peterson Serve-Ag Pty Ltd April 2002 RIRDC Publication No 02/007 RIRDC Project No: SAG-1A © 2002 Rural Industries Research and Development Corporation. All rights reserved. ISBN 0 642 58406 0 ISSN 1440-6845 Methodology and viability of re-establishing commercial Boronia megastigma plantations Publication No. 02/007 Project No. SAG-1A The views expressed and the conclusions reached in this publication are those of the author and not necessarily those of persons consulted. RIRDC shall not be responsible in any way whatsoever to any person who relies in whole or in part on the contents of this report. This publication is copyright. However, RIRDC encourages wide dissemination of its research, providing the Corporation is clearly acknowledged. For any other enquiries concerning reproduction, contact the Publications Manager on phone 02 6272 3186. Researcher Contact Details Dr Doris Blaesing Dr Lee Peterson Serve-Ag Pty Ltd Serve-Ag Pty Ltd PO Box 690, DEVONPORT, TAS 7310 PO Box 149, GLENORCHY, TAS 7010 Phone: 03 6427 0800 Phone: 03 6233 5522 Fax: 03 6427 0801 Fax: 03 6273 6688 Email: [email protected] Email: [email protected] In submitting this report, the researcher has agreed to RIRDC publishing this material in its edited form. RIRDC Contact Details Rural Industries Research and Development Corporation Level 1, AMA House 42 Macquarie Street BARTON ACT 2600 PO Box 4776 KINGSTON ACT 2604 Phone: 02 6272 4539 Fax: 02 6272 5877 Email: [email protected].
    [Show full text]