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 15 of 15 for “"Beneficial insects"”.
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ATTRACTING BENEFICIAL INSECTS TO YOUR FARM: A COMPARISON OF HABITAT MODIFICATION STRATEGIES
… enhancements are most effective in attracting beneficial insects, namely pollinators and natural enemies to pests. Through biological control, natural invertebrate predators inhibit vegetative pests that can be detrimental to croplands. The promotion of natural enemies can decrease the need for …
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Ovicidal activity of methomyl on eggs of pest and beneficial insects and mites associated with apples in Virginia
… l water, was evaluated against eggs of pest and beneficial insects and mites associated with apples. The pest eggs studied were: Laspeyresia pomonella, Panonychus ulmi, Platynota spp., aphids, and Argyrotaenia velutinana. For A. velutinana, five rates of methomyl ranging from 0.013 to 0.204 kg …
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Mise en place de différentes stratégies visant à favoriser l’approche « push-pull » pour le contrôle des pucerons en cultures maraîchères dans l’est de la Chine
… treatments in the populations of aphidiphagous beneficial insects was determined by five weeks of insect trapping and observations on the plants. The results indicate that none of the modalities has a significant effect on the populations of beneficial insects and aphids. However, we observed …
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Economic Feasibility of a Biological Control Cottage Industry in Niger
… begun to support small businesses which sell a beneficial insect (Habrobracon Hebetor) that is very effective in limiting millet yield losses due to the millet head miner. This study discusses a wide range of questions related to the economic prospects of these businesses using two main …
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Developing methods of strip cropping cucumbers with rye/vetch
… and cover crop management techniques on pest and beneficial insects, petiole sap nitrate-nitrogen, soil moisture, yields and economic viability were assessed. Four treatments, namely cucumber direct seeded in black plastic mulch on tilled bare ground (conventional); cucumber direct seeded in black …
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An ecological survey of insects of a Pennsylvania farmstead
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science, 1956
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Perimeter Cropping As a Means of Reducing Insect Injury and Increasing Crop Yield
… wildflower pollination mixture attracted many beneficial insects that helped optimize the pollination process of the cash crop of ‘Howden’ pumpkins.</p>
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Spiders associated with apple trees in Virginia with notes on their importance in controlling orchard insect pests
… Spider feeding tests on insect pests-prey and beneficials showed that one pest species could be preyed upon by a complex of spider species. Beneficial insects such as Lepthothrips mali (Fitch) also were susceptible to capture by several spider species.
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Assessing Potential Solutions to Mitigate Pollution from Neonicotinoid Seed Coatings
… while potentially reducing exposure to beneficial insects.
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Enhancing biotic mortality of the potato leafhopper, Empoasca fabae
… technique for E. fabae while retaining beneficial insects.;Predation rates of E. fabae by four predatory species were examined in a greenhouse study. Adult Coleomegilla maculata and Orius insidiosus consumed more E. fabae nymphs than adults. In contrast, similar numbers of adult and …
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Floral derived compounds as attractants for agricultural pests in the family Noctuidae
… carried out on H. armigera revealed that gravid insects were significantly less likely compared to virgin insects to make contact with an odour blend baited lure. In addition, insects provided with sucrose solution were significantly less likely to make contact with the odour source compared to …
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Laboratory comparisons of the effects of wheat protectants on stored grain insects
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Entomology, 1953
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Integration of High Residue/No-till and Farmscaping Systems in Organic Production of Broccoli
… by hand in NT treatments. High numbers of beneficial insects (Cotesia glomerata, Cotesia orobenae and Diadegma insulare) kept the primary insect pest population (Pieris rapae, Evergestis rimosalis (Guenee), and Plutella xylostella) at a pest to predator ratio below 4:1. Although the …
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A Combined Computational Strategy of Sequence and Structural Analysis Predicts the Existence of a Functional Eicosanoid Pathway in <i>Drosophila melanogaster</i>
… enzymes in <em>D. melanogaster</em>, and in insects generally. Using sensitive sequence analysis techniques, we identified candidate orthologs in the <em>Drosophila</em> genome that share low global sequence identities with their human counterparts. The <em>Drosophila</em> sequences were …
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DEVELOPMENT OF THE STERILE INSECT TECHNIQUE FOR THE INTEGRATED MANAGEMENT OF THE BROWN MARMORATED STINK BUG HALYOMORPHA HALYS STÅL (HEMIPTERA: PENTATOMIDAE): BASIC REQUIREMENTS AND NEW KNOWLEDGE ACQUISITIONS TO SET UP THE NEW TOOL
… frequently, with consequent negative impact on beneficial insects in the agroecosystems. As a result, there is a desire for more environmentally friendly solutions for the management of BMSB. A valid alternative is the use of exotic and coevolved biocontrol agents, for instance, the Samurai …