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 20 of 124 for “"pest control"”.
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Benefit-cost analysis as applied to insect pest control programs
… value of on-going and proposed forest insect control programs is presented. Chapter two briefly discusses some economic concepts used in benefit-cost analysis. Those discussed are: consumer's surplus, social discount rate, shadow prices, characteristics of social costs, characteristics of …
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LOCAL AND LANDSCAPE DRIVERS OF BIOLOGICAL PEST CONTROL IN AGRICULTURAL SYSTEMS
Biological insect pest control by natural enemies is an important component of sustainable crop production. To capitalize on the potential benefits of biological control, however, we need a clear understanding of the factors underpinning the biological and ecological relationships between pests and …
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Landscape-scale mechanisms of biological pest control in a South Korean agricultural landscape
Biological pest control is a major ecosystem service provided by natural enemies to world crops. However, current understanding of how to manage this service in real-world landscapes is limited by our lack of knowledge of the factors determining landscape-scale pest control, enemy diversity and the …
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Agricultural intensification, biological pest control and spatio-temporal changes in food web structure
Die Intensivierung der Landwirtschaft ist einer der Hauptauslöser von Verlusten in der Agrarbiodiversität und damit verbundenen Ökosystemfunktionen wie der biologischen Kontrolle. Sie beeinflusst dadurch indirekt auch die landwirtschaftliche Produktionsleistung. Durch die Intensivierung der …
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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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Role of bats as natural pest control agents of moth pests (false codling moth and carob moth) on citrus orchard
… within agricultural landscapes through insect pest suppression has gained recognition globally. Multiple studies have thoroughly examined the vital role played by insectivorous bats within agricultural landscapes as biological control of insect pests for crops such as rice, cotton, pecan, corn, …
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Transport and deposition of spray droplets above and within a soybean canopy
… is the most effective and feasible method of pest control. However, the process of transport and deposition of spray droplets during application are not fully understood. Particularly, the effect of turbulence on spray transport and deposition is not clear.
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Enhancing the benefits to biodiversity and ecosystem services within arable field margins
… can also enhance the levels of pollination and pest control in adjacent crop fields. They may also promote a suite of additional ecosystem services of societal and agronomic importance, but this has yet to be established. Furthermore, the ability of forb-rich field margins to deliver multiple …
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Herbivorous insects interaction with entomopathogenic fungi (based on species of Hymenoptera and Lepidoptera orders) /
… and Hymenoptera are the major orders of pests. Chemical pest control is still the predominant type of pest control today. One of alternatives to chemical insecticides is the use of biological preparations based on entomopathogenic fungi. The aim of the research was to determine the …
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Conservation biological control in a multi-strata agroforestry system
… ecosystem services that benefit farmers. Pest control by wild predators and parasitoids could be an especially valuable service in fruits and nuts, the main cash crops in polyculture agroforestry systems. To understand how diverse agroforestry’s unique traits would affect pest control, I …
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Microprocessor controlled mildew detector
… of rand in terms of both harvest loss and pest control measures. However, the weather conditions conducive to an outbreak of the disease have been well researched, thus it should be possible to monitor these in the vineyard and subsequently raise an alarm, whereupon systematic application …
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Factors facilitating pest infestation in two low-income urban areas of Cape Town, South Africa : an urban health observation study
High pest burdens in low-income urban areas pose a significant public health threat to residents due to pest-induced diseases and other negative health consequences. Furthermore, pests can also be a source of nuisance and social stigma. To ward off pests and the problems they are associated with, …
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Automatic Control of Chemical Application Rate With Soil Organic Matter and Travel Speed as Inputs (Microprocessor, Digital Control)
Effective and efficient control of agricultural chemical application rate will allow a reduction in the use of pesticides for proper pest control with less environmental contamination. A microprocessor based sprayer control system was developed to regulate chemical application rate according to the …
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Home Gardener Preferences, Perceptions, Knowledge and Behaviors Associated with Pest Management Strategies and Information Acquisition
Abstract The overuse and/or misuse of pesticides by home gardeners has been verified through various reports indicating home gardeners may fail to recognize opportunities to implement more preferable pest management practices such as Integrated Pest Management (IPM). A series of three surveys, …
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Regenerated desiccant devices for cooling stored grains
… reduces biological activities such as insect pest reproduction and mould growth. Cooling grains also reduces that rate at which moisture migrates from warm regions of a bulk of grain to cooler regions. There is resurgence in interest in physical methods of pest control, which is a result of …
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Pest management program for structured urban environments
The development and evaluation of the pest management program involved many different aspects of urban pest control and urban pest management. The program consisted of individual pest management programs for the primary urban pests in prison environments. Each program involved resource manuals, …
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Estudo sobre gerenciamento de riscos no acervo do arquivo da Fundação Casa de José Américo
… hygiene and protection consist of documentary, pest control, review of central air conditioning, prevention of leaks, prohibition of the consumption of food in the file. Regarding the most frequent deterioration agents in the environment, we highlight the appearance of insects and fungi, …
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Economic Feasibility of a Biological Control Cottage Industry in Niger
… the economic feasibility of a biological control industry in Niger. Farmers in the Sahel region of Niger are vulnerable to high millet yield losses due to the millet head miner, and their pest control options are extremely limited. Researchers have begun to support small businesses which …
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