Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"agricultural pest"”.
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Economics of Decision-Making in Agricultural Pest Management (Integrated Pest Management (Ipm))
Decision making in pest management, like all other economic problems, involves allocating scarce resources to meet human needs. One hundred Illinois corn and soybeans farmers were surveyed to examine their pest management decision making in the 1984 growing season. Farmer's decisions to adopt …
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The demography of the Egyptian Goose, its impacts on cereal crop agriculture on the Agulhas Plain, Western Cape, South Africa and the measures to mitigate damage to crops by geese
… aegyptiacus) as a widespread and major agricultural pest. Cereal crop farmers on the Agulhas Plain in the Western Cape province of South Africa are concerned that populations of Egyptian Geese have increased since the early 1990s, and are causing serious damage to their crops.
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The effectiveness of rabbit control on selected North Canterbury farms
… Zealand and describes the rabbit's status as an agricultural pest. The history of rabbit control policy and methods are discussed with emphasis on the difficulty in implementing the current policy of economic control. The biological and ecological research is reviewed and recommendations for more …
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Behavioural and physiological responses of myzus persicae to ultraviolet light for the development of new pest control technologies
… to deliver new understanding of the responses of pest insects to light for the purpose of improved agricultural pest control. Through access to experimental polyethylene horticultural films with novel transmission properties, I exploited new opportunities for exploring separate short- and …
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Ecology of the Brown Marmorated Stink Bug (Hemiptera: Pentitomidae): Oviposition on Different Trees, Nymphal Development on Various Vegetable Hosts, and Assessment of a Bacterial Pathogen
… the United States and become a serious agricultural pest. Studies were conducted in Virginia on the survival of H. halys nymphs on different vegetable hosts and on the oviposition preference of H. halys on common tree hosts in southwestern Virginia. To determine the effects of vegetable …
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Toward optimized surveillance of adventive Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) based on aspects of its foraging ecology
… (Stål) (Hemiptera: Pentatomidae), an invasive agricultural pest from Asia, has established in much of the USA, where it has had significant, deleterious impacts on the production of various specialty crops. Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) is the predominant egg …
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Isolation and characterization of the female sex pheromone of the sugar beet cyst nematode, heterodera schachtii, and an analysis of male precopulatory behaviour /
… cyst nematode, Heterodera schachtii, is a major agricultural pest. The disruption of the mating behaviour of this plant parasite in the field may provide a means of biological control, and a subsequent increase in crop yield. The H. schachtii female sex pheromone, which attracts homospecific …
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Valuing the ecosystem services provided by UK bats under climate change
… bats are recognised as important regulators of agricultural pests populations, yet the ecological mechanisms linking bat biodiversity to potential pest suppression, and the economic value of this service, remain poorly understood. This thesis investigates how climate change may affect bat …
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Male reproductive success and population control in the Mediterranean fruit fly, ceratitis capitata
… research into the reproductive behaviour of this agricultural pest. An understanding of what makes a successful male is of great importance in this lekking species, as one male has the ability to dominate access to females. In addition species-specific pest control techniques such as the Sterile …
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Possum (Trichosurus vulpecula) responses and preferences to novel objects in their environment
… vulpecula Kerr 1792) is a major conservation and agricultural pest in New Zealand, and is currently a focus of much research to improve control efficacy. Traps and toxins stored within bait stations are used to control possums in ground-based operations, yet few studies have investigated the …
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The landscape ecology of brown hares and European rabbits in pastures in the north east of England
… in the UK, may have been caused by changes in agricultural management. This study aims to identify hare distribution, density, habitat selection and demography in grasslands in order to benefit their future conservation. In addition, this study aims to investigate the impact of current …
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Stakeholder perspectives on the giant African land snail and its spread in Samoa : a dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Applied Science in International Rural Development, Lincoln University
… impact is that the snail is a significant pest of agricultural crops. More than 500 plant species in the world are host plants to Achatina fulica. That includes a huge variety of crops, fruits, vegetables, and garden and ornamental plants. The snail was first reported from Upolu Island, …
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The ecology of the Red-vented Bulbul in Fiji.
… avian introduction to Fiji, and its role as an agricultural pest. The work is also of comparative interest as a study, with intensive sampling, of a tropical passerine. In Chapter One, a background description of the natural history of Fiji is provided. The probable manner of the accidental …
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Electrophysiological and morphological analyses in two species of insects, Protophormia terraenovae and Ceratitis capitata
… capitata Wied.) is one of the most important pest for horticulture, targeting a great variety of fruit and vegetables species worldwide. Due to its commercial relevance, many studies focused on the development and improvement of control strategies based on olfactory chemoreception. A complete …
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Phenotypic and biochemical characterization of atrazine and HPPD-resistant waterhemp (amaranthus tuberculatus) populations
… Two decades ago it was not considered a major agricultural pest, but with the adoption of glyphosate-only postemergence (POST) herbicide programs without soil residual activity combined with no-till practices, it has become one of the most important weeds in Illinois and across the Midwest in …
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Molecular evolution of a superfamily of chemoreceptors in Musca domestica and Ceratitis capitata
… fruit fly (Ceratitis capitata) are two important pest species. While both are generalists, the first is a major vector of a variety of human and livestock disease, while the second is a broadly polyphagous herbivore and important crop pest. Each must be able to navigate a complex set of chemical …
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Reproductive traits, identity and host preferences of two genetic lines of the seedcorn maggot, Delia platura (Diptera : Anthomyiidae)
… change scenarios predict an exacerbation of agricultural pest damage worldwide. Growers are stuck between a rock and a hard place namely the increasing capricious demands of consumers and pressure from pesticide companies to use their products. There has been increasing interest in developing …