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Dissertations / Theses on the topic 'Orchard pests'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

White, John Gordon. "Control of rodent damage in Australian macadamia orchard systems." Thesis, Queensland University of Technology, 1999.

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2

Odendaal, Deidre. "Orchard and bin treatment with entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) for the control of the codling moth (Cydia pomonella)." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97962.

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Thesis (MSc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: The codling moth, Cydia pomonella (Lepidoptera: Tortricidae), is the key pest of apples and pears worldwide. The withdrawal of certain fundamental chemicals from codling moth management spray programmes, due to concerns about human, environmental and ecosystem health, has resulted in the search for softer, more environmentally friendly, and safer control measures. Entomopathogenic nematodes (EPNs), naturally occur in the soil, and actively search for hosts. The interest in using EPNs from the families Heterorhabditidae and Stein

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3

Nicholas, Adrian H., of Western Sydney Hawkesbury University, and Faculty of Science and Technology. "The pest status and management of woolly aphid in an Australian apple orchard IPM program." THESIS_FST_XXX_Nicholas_A.xml, 2000. http://handle.uws.edu.au:8081/1959.7/330.

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The thesis studied the biological control of woolly aphid (Eriosoma lanigerum Hausm.) using European earwig (Forficula auricularia L.) in an Australian apple orchard IPM program. Woolly aphid populations were monitored over the 1995/96 and 1996/97 growing seasons, completing a four year study of the pest's status and management under IPM programs at Bathurst in the Central Tablelands of NSW. Woolly aphid infestation in 2 IPM treatments, based on alternative control techniques for codling moth (Cydia pomonella L.), namely mating disruption and fenoxycarb, were compared with a conventional insec

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4

Liang, Weiguang, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Impact of horticultural mineral oil and synthetic pesticides on arboreal and soil fauna biodiversity within citrus orchard ecosystems." THESIS_CSTE_SFH_Liang_W.xml, 2002. http://handle.uws.edu.au:8081/1959.7/121.

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The results of the 3-year project successfully indicated that petroleum-derived spray oils can be used for effective control of a range of citrus pests including citrus leafminer, Asiatic citrus psyllid, chaff scale, red scale, citrus red mite. The results suggested that it should be possible, through use of horticultural and agricultural mineral oils and enhanced natural enemy activity, to reduce the number of pesticide sprays applied annually in China from 14-16 sprays to significantly fewer sprays in most regions. The results are also valuable as references for the implementation of citrus

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5

Svensson, Sven Axel. "Converging air jets in orchard spraying : influence on deposition, air velocities and forces on trees /." Alnarp : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5818-8.pdf.

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6

Rabie, Louise. "An evaluation of the specific apple replant problem in Western Cape orchard soils." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52108.

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Thesis (MScAgric)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: Apple replant disease (ARD) is one of the major impediments to the establishment of an economically viable apple orchard on sites previously planted to apple. In spite of extensive research on ARD, the etiology remains to be fully elucidated. A possible biological origin of ARD etiology in South Africa was investigated by the dilution of replant field soil with sterilised soil. Commercial orchards with ARD were selected for use in pot trials and disease severity evaluated after three months, by measuring shoot len

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7

Liang, Weiguang. "Impact of horticultural mineral oil and synthetic pesticides on arboreal and soil fauna biodiversity within citrus orchard ecosystems." Thesis, View thesis, 2002. http://handle.uws.edu.au:8081/1959.7/121.

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The results of the 3-year project successfully indicated that petroleum-derived spray oils can be used for effective control of a range of citrus pests including citrus leafminer, Asiatic citrus psyllid, chaff scale, red scale, citrus red mite. The results suggested that it should be possible, through use of horticultural and agricultural mineral oils and enhanced natural enemy activity, to reduce the number of pesticide sprays applied annually in China from 14-16 sprays to significantly fewer sprays in most regions. The results are also valuable as references for the implementation of citrus

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8

Sandskär, Boel. "Apple scab (Venturia inaequalis) and pests in organic orchards /." Alnarp : Dept. of Crop Science, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a378.pdf.

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9

Rogers, Richard E. L. "Insect and mite monitoring in commercial apple orchards in Nova Scotia (1979-1985)." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65368.

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10

Damavandian, M. R. "Biology of subterranean populations of woolly apple aphid, Eriosoma lanigerum (Hausmann)(Homoptera:Aphididae), in apple orchards." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51638.

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Dissertation (PhD (Agric))--University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: A study was made of the basic biology of subterranean Eriosoma lanigerum (Hausmann) populations in apple orchards in the Western Cape Province of South Africa. The absence of cornicles and the presence of a vulva could be used to identify 1st instar nymphs and adults respectively. Body length, body width and length of the hind femur are useful for separating 2nd , 3rd and 4th instars. However, separation of 2nd from 3rd instar nymphs was very unreliable. Maximum population growth rate was at 23°C while

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11

Heunis, J. M. (Juanita Maria). "The influence of synthetic pyrethroids on phytophagous mites and their natural enemies in apple orchards." Thesis, Stellenbosch : Stellenbosch University, 1992. http://hdl.handle.net/10019.1/69805.

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Thesis (MSc)--Stellenbosch University, 1992.<br>One copy microfiche.<br>ENGLISH ABSTRACT: The effects of synthetic pyrethroids on the spider mite, Tetranychus urticae Koch, and its natural enemies was investigated. The pyrethroid cyfluthrin, sprayed for the control of fruit weevil Phlyctinus callosus, did not cause mite outbreaks and was not harmful to the predators when sprayed before they appeared on the apple trees. This spray also gave good control of thrips, bollworm (Heliothis armigera) and fruit weevil (P. callosus). A late season spray of deltamethrin against codling moth, cause

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12

Parsons, Stephen H. "Comparing orchid transformation using agrobacterium tumefaciens and particle bombardment." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941350.

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The Wheeler Orchid Collection is home to some of the most endangered species of orchids in the world. This fantastic reservoir of endangered species has been enhanced and broadened by its function as a plant rescue station for the U.S. customs service. Unfortunately, this responsibility increases the risk of bringing orchids, which harbor contageous diseases, into the greenhouse where sap transmitted diseases such as the Tobacco Mosaic Virus (TMV), can run rampant. Although manipulation of orchid characteristics is typically done by classical plant breeding techniques, genetic engineering is e

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13

Nicholas, Adrian Harry. "The pest status and management of woolly aphid in an Australian apple orchard IPM program /." View thesis, 2000. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030624.095814/index.html.

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14

Irvin, N. A. "Understorey management for the enhancement of populations of a leafroller (Lepidoptera: Tortricidae) parasitoid (Dolichogenidea tasmanica (Cameron)) in Canterbury, New Zealand apple orchards." Lincoln University, 1999. http://hdl.handle.net/10182/1111.

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This study investigated understorey management in Canterbury, New Zealand, apple orchards for the enhancement of populations of Dolichogenidea tasmanica (Cameron) (Braconidae) for leafroller (Lepidoptera: Tortricidae) biological control. The first objective was to determine the influence of understorey plants on the abundance of D. tasmanica and leafroller parasitism, and to investigate the mechanisms behind this influence. The second was to determine the most suitable understorey plants in terms of their ability to enhance parasitoid abundance, leafroller parasitism, parasitoid longevity, par

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15

Gange, Alan Christopher. "The ecology of the alder aphid "Pterocallis alni" (Degeer) and its role in integrated orchard pest management." Thesis, King's College London (University of London), 1985. https://kclpure.kcl.ac.uk/portal/en/theses/the-ecology-of-the-alder-aphid-pterocallis-alni-degeer-and-its-role-in-integrated-orchard-pest-management(20ddfb21-20f5-48d9-8e0e-db9d338a182b).html.

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The black-kneed capsid bug, Blepharidopterus angulatus(Fallen) is an important colonizer of orchards in late summer. Capsids develop on alder windbreaks feeding on the aphid Pterocallis alni(Degeer). When the aphid population declines adult bugs move to nearby orchards where they feed on pest species. The biology and ecology of P. alni has been examined in order that predator populations may be manipulated. Aphid populations increase rapidly to a peak, then suddenly decline. A high initial population results in a peak in mid July, low initial numbers result in a peak in early August. Pruning o

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16

Ferguson, Kaye. "The biology, ecology and management of the Quandong moth, Paraepermenia santaliella (Lepidoptera: Epermeniidae)." Title page, contents and summary only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phf3523.pdf.

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Includes bibliographical references (leaves 217-230). Details the biology and life history of the Quandong moth and investigates management strategies that would enable growers to manage the pest in an economically and environmentally sustainable program.

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17

Sackett, Tara. "Natural enemy ecology in apple orchards: spider colonization of orchards and effects of kaolin on the apple pest «Choristoneura rosaceana» and its natural enemies." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18437.

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Integrated pest management (IPM) uses multiple approaches to keep pest levels below economic injury levels. Integrated pest management combines preventative methods such as biocontrol with curative methods; this synthesis requires an understanding of the ecology of natural enemies in the agroecosystem. Arthropod natural enemy communities in apple orchards are diverse, and spiders (Araneae) are particularly abundant and species rich. Orchard arthropods are affected by multiple factors, both external (e.g. immigration) and internal (e.g. pesticides) to the orchard environment. In this thesis

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18

Cuthbertson, Andrew Garnet Steen. "The role of the predatory mite Anystis baccarum in Bramley apple orchards." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326402.

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19

David, Paul Joseph. "Bionomics of Platynota flavedana Clemens and P. idaeusalis (Walker)(Lepidoptera: Tortricidae) in Virginia apple orchards." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/54282.

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The effects of pheromone trap placement on male moth catches of both species were studied. For P. flavedana, traps hung at 2.1 and 3.0 meters captured the greatest number of moths. Trap heights of 1.2, 2.1, and 3.0 meters caught the greatest number of P. idaeusalis moths. The outside-the-canopy trap position captured more P. flavedana moths, while the within-canopy trap location caught the greatest number of P. idaeusalis moths. Traps placed in the west portion of the tree captured the greatest number of P. flavedana moths. P. idaeusalis moth catches were not influenced by compass quadrants. T

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20

Greatorex, Emma Clare. "The role of Zetzellia mali (Ewing)(Acarina:Stigmaeidae) and tydeid mites in biocontrol in apple orchards." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263253.

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21

Bradshaw, Terence L. "Comprehensive Assessment of Organic Apple Production in Vermont: Experience from Two Orchard Systems, 2006-2013." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/327.

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Despite substantial consumer demand and willingness to pay premium prices for organically grown fruit, apple growers in Vermont and other New England states have been slow to adopt certified organic practices. Barriers cited in the past to increased adoption of organic apple production in the region include susceptibility of traditionally grown cultivars to apple scab, lack of effective insect pest management materials, and few available effective options for fruit thinning. Recent changes in apple cultivar plantings in the region, introduction of new insect pest management materials, and adva

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22

Bownes, Angela. "The structure of ant communities and their impact on soil-pupating pests in citrus orchards in the Grahamstown area of the Eastern Cape." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1005463.

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Two ant species, Pheidole megacephala (Fabricius) and Anoplolepis custodiens (Smith) reach pest status in citrus orchards through precipitating outbreaks of homopterous pests. However, predacious ants, including these two ant species, play an important role in pest suppression in agroecosystems and are therefore beneficial to these systems. If A. custodiens and P. megacephala are important natural control agents in citrus, using ant bands to break the mutualism between the ants and the Homoptera as a method of ant control is preferable to poisoning. Ant communities were sampled by pitfall trap

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23

Mudavanhu, Pride. "An investigation into the integrated pest management of the obscure mealybug, Pseudococcus viburni (Signoret) (Hemiptera: Pseudococcidae), in pome fruit orchards in the Western Cape Province, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2620.

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Thesis (MScConsEcol (Conservation Ecology and Entomology))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Pseudococcus viburni (Signoret) (Hemiptera: Pseudococcidae) (obscure mealybug), is a common and serious pest of apples and pears in South Africa. Consumer and regulatory pressure to produce commodities under sustainable and ecologically compatible conditions has rendered chemical control options increasingly limited. Information on the seasonal occurrence of pests is but one of the vital components of an effective and sustainable integrated pest management system needed for

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24

Hutchinson, Chad M. "Agrobacterium tumefaciens mediated transformation of orchid tissue with the sense and antisense coat protein genes from the odontoglossum ringspot virus." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834608.

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This research was an attempt to use a dicot transformation vector to transform a monocot. The initial purpose of this thesis was to transform orchids with the sense and antisense coat protein genes from the Odontoglossum ringspot virus (ORSV) in an effort to mitigate viral symptoms in transgenic plants using the transformation vector, Agrobacterium tumefaciens. However, it soon became apparent that much time would be needed to develop a transformation protocol. The transformation vectors used included the Agrobacterium tumefaciens disarmed strain LBA4404 with the binary plasmid pB1121, the dis

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25

Thorpe, Peter Tulloh. "Future-proofing food : striving towards minimal insecticidal application in Western Cape pome fruit orchards." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96734.

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Thesis (MSc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: Increasing pressure on food production and the concern over maintenance of biodiversity and ecosystem services is creating an urgent need to future-proof food production, while maintaining the natural environment for future generations. Within the Cape Floristic Region (CFR) biodiversity hotspot in the Western Cape of South Africa, deciduous fruit is widely grown, contributing significantly to the local economy. To ensure access is maintained to important export markets, this study reviews the current available pest control opti

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26

Campbell, Alistair J. "Functional agri-biodiversity : improving pest control and pollination services by means of multi-functional flower strips in cider-apple orchards." Thesis, Lancaster University, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.742532.

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Sown flowering strips can benefit beneficial arthropod groups (pollinators and natural enemies) on farmland and enhance the delivery of arthropod-mediated ecosystem services in crops. However, not all flowering plants may be useful for beneficial arthropod taxa, as differences in floral traits associated with nectar accessibility (e.g. nectar-holder depth) determine resource use. Therefore, increasing the number of distinct floral traits in flower mixes may be an effective way to manage multiple arthropod-mediated ecosystem services in farmland. Here, the response of pollinators and natural en

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Odorizzi, dos santos Luan alberto. "Contribution of marginal non-crop vegetation and semi-natural habitats to the regulation of insect pests populationsby their natural enemies." Thesis, Avignon, 2017. http://www.theses.fr/2017AVIG0693/document.

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L'expansion des zones agricoles a conduit à la perte de biodiversité due à la réduction des habitats naturels et semi-naturels dans les paysages agricoles. Avec l'augmentation de la production agricole dans le monde, des techniques écologiquement rationnelles sont de plus en plus discutées qui permettent une gestion durable des habitats environnants. Les effets de ces habitats sur la population des insectes nuisibles et de leurs ennemis naturels sont encore mal connus. L'objectif de cette thèse était de comprendre les effets des environnements naturels et semi-naturels sur la population des in

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28

Liang, Weiguang. "Impact of horticultural mineral oil and synthetic pesticides on arboreal and soil fauna biodiversity within citrus orchard ecosystems /." View thesis, 2002. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030819.153206/index.html.

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Thesis (Ph.D. (Horticulture)) -- University of Western Sydney, 2002.<br>"A thesis submitted to the University of Western Sydney for the fulfillment of study for a degree of Doctor of Philosophy in Horticulture" "Principal supervisor: Robert Spooner-Hart, co-supervisor: Andrew Beattie, co-supervisor: Alfie Meats" Bibliography : leaves 231-265.

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29

Haaning, Allison M. "Detection of odontoglossum ringspot virus in inoculated orchid leaf tissue using SYBR green real-time RT-PCR." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1371842.

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Odontoglossum ringspot virus (ORSV) is one of the most prevalent orchid viruses that infects greenhouse-grown orchids worldwide. In order to prevent the spread of viruses in greenhouses and to cultivate clones from virus-free mother plants, it is necessary to develop a more sensitive technique for the detection of viruses in orchids. SYBR green real-time RT-PCR is a highly sensitive technique that can specifically detect ORSV in orchid tissue. By harvesting tissue at the inoculation site and at specific distances from the inoculation site at different times past inoculation, this technique can

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30

Wessels, Andries Bernardus. "Genetic characterization and fungicide resistance profiles of Botrytis cinerea in rooibos nurseries and pear orchards in the Western Cape of South Africa." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20070.

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Thesis (MScAgric)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Botrytis cinerea Pers. Fr. [teleomorph Botryotinia fuckeliana (de Bary) Whetzel] causes serious losses of over 200 crops worldwide, including rooibos seedlings and pears. This pathogen is characterized by morphological, physiological and genetic diversity. The genetic diversity and population structure have not been investigated for B. cinerea populations in South Africa. Botrytis cinerea collected from rooibos seedlings and in pear orchards in the Western Cape of South Africa were investigated in the present study. T

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31

Blomefield, Thomas Loftus. "Bionomics, behaviour and control of the codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), in pome fruit orchards in South Africa." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53312.

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Dissertation (PhD(Agric))--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: The codling moth, Cydia pomonella (L.) has been a major pest of pome fruits since before the turn of the last century. However, despite its high economic profile little is known about the bionomics and . behaviour of this pest in apple orchards in South Africa, information required for the development of a sustainable integrated management programme. In field trials there was contingency between the time of year and the upper and lower half of the tree. First generation moths laid significantly more eggs in th

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32

Brown, Amanda Erica. "Variability in abundance of the rosy apple aphid (Dysaphis plantaginea), the role of its alternate host (Plantago major), and potential control strategies in organic apple orchards in British Columbia." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/3422.

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The rosy apple aphid, Dysaphis plantaginea, (Homoptera: Aphididae) is a serious pest of apples in British Columbia (BC), Canada and especially in organic orchards where conventional controls cannot be used. The goals of this study were to determine the environmental or management factors of an orchard that lead to high aphid populations, to conduct an economic assessment of the damage, to determine the timing of autumn migration, and to test several autumn and spring chemical control methods and two novel autumn mechanical control methods targeting the aphids while on their alternate host, Pl

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Sisson, Adam James. "Assessing new methods of integrated pest management for apple orchards in the Midwest and phenology of sooty blotch and flyspeck fungi on apples in Iowa." [Ames, Iowa : Iowa State University], 2009.

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34

Michaud, Odile. "The establishment of economic thresholds for the green apple bug, Lygocoris communis (Knight), and tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), (Hemiptera: miridae) in apple orchards in Southwestern Quebec /." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66179.

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35

Carroll, Audra L. "Sense and antisense oligonucleotide inhibition of the Odontoglossum ringspot virus (ORSV) coat protein gene via microprojectile bombardment of orchid callus tissue." Virtual Press, 1999. http://liblink.bsu.edu/uhtbin/catkey/1210536.

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A major goal of our laboratory is to confer resistence specifically to the Odontoglossum ringspot virus [ORSV; sometimes referred to as tobacco mosaic virus strain O (TMV-O)] in orchids. The chosen strategy may also provide cross-protection to other pathogens. The experimental design for the entire project is presented here along with the results obtained in several preliminary experiments performed in this research. Our approach involved RT-PCR amplification of the viral coat protein gene with gene-specific primers and digestion of the cDNAs into oligonucleotides. These fragments were cl

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Martínez, Blay Victoria. "Biology and management, by application of classical biological control, of the invasive mealybug Delotoccoccus aberiae (Hemiptera:Pseudococcidae) in citrus orchards in Spain." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/106363.

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Delottococcus aberiae (Hemiptera: Pseudococcidae) es un pseudocóccido invasor originario del África subsahariana que fue detectado causando graves daños en cítricos del este de España en el año 2009. Debido al desconocimiento existente sobre esta especie, la gestión de D. aberiae se ha llevado a cabo mediante el uso de tratamientos químicos autorizados contra este tipo de insectos. Sin embargo, la última Directiva Europea (2009/128/EC) sobre el uso sostenible de productos fitosanitarios estipula que la aplicación de plaguicidas en el ámbito agrícola debe reducirse, promoviendo estrategias de m

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Arcaya, Evelin. "Bionomía, diversidad y morfología preimaginal de sírfidos depredadores (Diptera: Syrphidae) en el Estado Lara, Venezuela. Importancia en el control biológico de plagas." Doctoral thesis, Universidad de Alicante, 2012. http://hdl.handle.net/10045/26778.

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Este estudio constituye una importante fuente de información sobre el potencial de los sírfidos depredadores (Diptera: Syrphidae, Syrphinae) como agentes biológicos para el control de plagas en cultivos agrícolas en Venezuela. Las larvas de los Syrphidae presentan una morfología muy variada y poseen una gran diversidad de modos de vida. La mayor parte de los representantes de la subfamilia Syrphinae, son depredadores de una amplia gama de hemípteros de cuerpo blando aunque también pueden alimentarse de otros artrópodos. Las principales presas de los sírfidos depredadores son los áfidos o pulgo

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Demestihas, Constance. "Analyse des conflits et synergies entre services écosystémiques multiples en vergers de pommiers." Thesis, Avignon, 2017. http://www.theses.fr/2017AVIG0690/document.

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Le concept de « service écosystémique », en plein essor depuis la publication du Millenium Ecosystem Assessment en 2005, a permis de souligner l'importance des performances non-marchandes des écosystèmes. En arboriculture, assurer une bonne productivité tout en préservant les ressources naturelles et la santé humaine est aujourd’hui un défi majeur, qui peut être analysé sous l’angle des services écosystémiques. Quels sont ces services au sein d’un verger de pommiers ? Comment les analyser ? Quels sont les liens - conflits et synergies - entre services écosystémiques multiples et comment les sy

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Nicholas, Adrian H. "The pest status and management of woolly aphid in an Australian apple orchard IPM program." Thesis, 2000. http://handle.uws.edu.au:8081/1959.7/330.

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The thesis studied the biological control of woolly aphid (Eriosoma lanigerum Hausm.) using European earwig (Forficula auricularia L.) in an Australian apple orchard IPM program. Woolly aphid populations were monitored over the 1995/96 and 1996/97 growing seasons, completing a four year study of the pest's status and management under IPM programs at Bathurst in the Central Tablelands of NSW. Woolly aphid infestation in 2 IPM treatments, based on alternative control techniques for codling moth (Cydia pomonella L.), namely mating disruption and fenoxycarb, were compared with a conventional insec

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Nengovhela, Ndoweni Mary. "The use of cover crops to increase yield and reduce pest pressure in a commercial avocado orchard at Levubu, Limpopo Province." Diss., 2020. http://hdl.handle.net/11602/1599.

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MENVSC<br>Department of Ecology and Resource Management<br>The study investigated the impact of cover crops (Medicago sativa, Lotus corniculatus, Trifolium pratense, Melilotus alba and Phacelia tanacetifolia), bare soil and natural ground cover on pest and beneficial arthropods, soil health, crop yield, pest damage and weed suppression in avocado orchards. The trial plots were sited within established commercial avocado orchards with trees of similar cultivar (‘Hass’), soil-type and age, located in Levubu, Limpopo, South Africa. Mixtures of cover crops were planted in the alleys of avocado orc

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Wisniewska, Joanna. "Spiders (Araneae) in the commercial apple orchards in Massachusetts." 1996. https://scholarworks.umass.edu/theses/3074.

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(9834113), Suryamani Sharma. "Acoustic detection of flying vertebrate pest in fruit orchard: Case study of lorikeets." Thesis, 2018. https://figshare.com/articles/thesis/Acoustic_detection_of_flying_vertebrate_pest_in_fruit_orchard_Case_study_of_lorikeets/13445555.

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Australian fruit growers face huge losses due to the damage sustained from flying vertebrate pests such as birds and flying foxes. Growers spend hundreds of thousands of dollars in combating these pests due to the strict stipulations by the Department of Environment and Resource Management requiring all deterrent measures to be non-lethal. Some of the counter measures include canopy netting, tunnel netting, odour repellents, sounds, lights, scare guns, fruit bags and chemicals. These methods involve high capital and periodic maintenance costs and are rendered ineffective over a period of time

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Weier, Sina Monika. "Ecology and management of bat communities to increase pest control in macadamia orchards, Limpopo , South Africa." Thesis, 2019. http://hdl.handle.net/11602/1315.

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PhD (Zoology)<br>Department of Zoology<br>An ever growing human population and accelerating land use change is associated with the loss of species and their ecosystem services. Agricultural intensification has led to a worldwide threat of extinction to about one quarter of all bat species, despite the valuable ecosystem service of pest control provided by bats. The decline in bat populations is mainly attributed to the loss or fragmentation of habitats, roost sites and feeding opportunities related to agricultural intensification and land use change. Therefore, proactive management of ba

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Hoffmann, Sara R. "Behavioral control of apple maggot fly (Rhagoletis pomonella) in Massachusetts commercial apple orchards." 2004. https://scholarworks.umass.edu/theses/3092.

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Maphote, Vongani Terrence. "Ecosystem services and disservices of ants in subsistence farming (Limpopo Province) : an experimental approach in mango orchards." Diss., 2017. http://hdl.handle.net/11602/977.

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Nascimento, Patrícia Monteiro. "Auchenorrhyncha monitoring and proposal of management measures for potential pests on peach orchards in Beira Interior region." Master's thesis, 2020. http://hdl.handle.net/10451/45399.

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Tese de mestrado, Biologia Humana e Ambiente, Universidade de Lisboa, Faculdade de Ciências, 2020<br>The Auchenorrhyncha suborder comprises several species considered to be pests of economically important crops whether as a result of the direct damage caused by their feeding process or through some species ability to act as vectors for plant pathogens such as viruses and phytoplasmas. Knowing this, the main goal of this study was the monitoring of the Auchenorrhyncha suborder for potential pests on peach orchards of the Beira Interior region, with a particular focus on the green leafhopper spe

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Matamba, Emmanuel. "The role of bats in the biological control of pests from macadamia orchards in Limpopo Province, South Africa." Diss., 2016. http://hdl.handle.net/11602/828.

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Fitzgibbon, Frances 1954. "Woolly apple aphid : interactions within an orchad system." 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phf5542.pdf.

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Errata and addenda attached. Bibliography: leaves 195-211. This thesis is concerned with the biology of Eriosoma lanigerum (WAA) and its parasitoid (Aphelinus mali), the impact of the pest on the crop and the effects of pesticides used routinely in South Australian orchards on both woolly apple aphid and the parasitic wasp. The study identifies current management practices of apple growers in South Australia. Aspects of the biology of WAA and A.mali are examined. Work is also done on the toxicity against WAA and A.mali of insecticides used in the control of codling moth and phytophagous mites.

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Blanchfield, AL. "Detection and molecular characterisation of Orchid Fleck Virus." Thesis, 2000. https://eprints.utas.edu.au/17398/1/whole-blanchfield-thesis.pdf.

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Orchid fleck virus (OFV) is one of three commonly found viruses infecting orchids. Infected plants have reduced flower quality and often unsightly leaf markings and are unsaleable. Effective disease control relies on routine detection of the virus, but foliar symptoms can vary markedly and are often not reliable for diagnosis. Current laboratory tests use examination of leaf sap by electron microscopy. This is time consuming and costly. The preferred immunological tests are not available as OFV has an unstable virion and attempts to purify virus particles for antibody production have fa

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Brown, Veronica Angelelli. "Molecular analysis of guano from bats in bat houses on organic pecan orchards." 2010. http://trace.tennessee.edu/utk_gradthes/606.

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