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Showing 1 to 16 of 16 for “"bifenthrin"”.
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Impact of Mosquito Age and Insecticide Exposure on Vector Competence of Aedes albopictus (Diptera: Culicidae) for Zika Virus
… and may use pyrethroid insecticides, such as bifenthrin. Since the efficacy of barrier spray treatments decreases over time due to environmental degradation, we characterized the extent to which sublethal bifenthrin exposure impacted vector competence for ZIKV. We exposed young (6-7 d …
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Identifying mechanisms of pyrethroid resistance in the navel orangeworm and novel methods of control
… in order to identify P450s induced by bifenthrin and associated with pyrethroid resistance. I extracted RNA from midguts of fifth instar larvae that fed on artificial diets with and without bifenthrin, and I carried out quantitative real-time PCR (qRT-PCR) analyses of 65 P450s in the …
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What is the best chemical approach to estimate the bioavailability of pyrethroid insecticides to benthic invertebrates?
… of two pyrethroids (permethrin and bifenthrin) (Chapter 3); Developing bioavailability-based toxicity endpoints for bifenthrin using two aquatic species (Chapter 4); and, Validating these techniques using sediments from known contaminated field sites (Chapter 5). Overall this …
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Insecticide detoxification in the navel orangeworm Amyelois transitella (Lepidoptera: Pyralidae)
… chlorantraniliprole, β-cyfluthrin, and bifenthrin to first instar A. transitella larvae from a susceptible strain. Piperonyl butoxide (PBO) interacted antagonistically with the organophosphate insecticides azinphos-methyl and chlorpyrifos, indicating that they likely are bioactivated by …
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Improving Integrated Pest Management in Sweet Corn System
… used in sweet corn. I examined the potential for bifenthrin, spinetoram, and chlorantraniliprole to repel bees and other beneficial arthropods after application in sweet corn; repellency could impact their risk of nontarget effects by reducing exposure. I found that there was no significant effect …
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Phenology and Management of Annual Bluegrass Weevil on Virginia Golf Courses
… that field rate concentrations of the pyrethroid bifenthrin showed variable mortality ranging from 20% to 80% suggesting the presence of resistance genes in the population. A 100-fold rate of bifenthrin resulted in 100% mortality of ABW, however. Because cross-resistance has been reported among …
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Morphological and Physiological Characteristics that Contribute to Insecticide Resistance in Bed Bug (Cimex lectularius L.) Eggs
… and Transport; acetamiprid/bifenthrin) indicated that bed bug eggs collected from pyrethroid resistant adult bed bug strains are also highly resistant. RNA sequencing of bed bug eggs from two resistant strains indicated that egg resistance may be directly related to the …
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Using selected acaricides to manipulate Tetranychus urticae Koch populations in order to enhance biological control provided by phytoseiid mites
… formulations tested in this trial. Abamectin, bifenthrin, chlorfenapyr, Gowan 1725,oil and neem oil suppressed T. urticae populations. Hexythiazox suppressed T. urticae populations but these results were not seen until two weeks after application. The effects of acaricide residues were tested …
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Pest Management of Japanese Beetle (Coleoptera: Scarabaeidae) and a Study of Stink Bug (Hemiptera: Pentatomidae) Injury on Primocane-bearing Caneberries in Southwest Virginia
… caneberries. Deltamethrin, chlorantraniliprole, bifenthrin, lime-alum, and thyme oil reduced JB activity in the field. Deltamethrin, chlorantraniliprole, acetamiprid, an azadirachtin and pyrethrin mixture, an azadirachtin and neem oil extract mixture, and an extract of Chenopodium ambrosioides …
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Determining The Occurrence, Fate, And Effects Of Pesticide Mixtures Using The Aquatic Amphipod Hyalella Azteca
… was to examine potential modifications to bifenthrin sediment partitioning, toxicity, and bioaccessibility resulting from various dissolved salt concentrations in overlying water using <i>H. azteca</i> and <i>Chironomus dilutus</i> as reference organisms. Together, the individual objectives …
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Management of Potato Leafhopper and Maple Spider Mite on Nursery Grown Maples
… red maple and `Autumn Blaze' Freeman maples. Bifenthrin applications directed against leafhoppers reduced damage to both cultivars, but increased <em>O. aceris</em> on Autumn Blaze. Using a threshold of one leafhopper per branch to trigger pesticide applications protected Red Sunset maples …
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Survey of different mealybug species and attending ants and their management in Virginia vineyards
… with distinct modes of action (Buprofezin, Bifenthrin, and Spirotetramat) in two of the commercial vineyards. Preliminary results indicate that on some days after treatment, insecticides effectively controlled mealybug populations, offering a glimmer of hope to vineyard owners grappling with …
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Factors influencing pyrethroid barrier spray effectiveness against Aedes mosquitoes
… CS (lambda-cyhalothrin), Talstar® Professional (bifenthrin), and Suspend® Polyzone® (deltamethrin). The following factors affecting pyrethroid barrier treatments showed significant impacts on the knockdown and mortality rates of Ae. albopictus mosquitoes: the plant species, the label rate at …
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Sorption and degradation of pesticides in biopurification systems
… organic matrix after use. Contaminated matrix (bifenthrin, linuron, metalaxyl and bentazone) was treated in an industrial composting plant and in barrel incubation. A decrease in certain pesticide concentrations could be observed in both processes. A removal in extractable pesticide …
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Impacts of organic and conventional neurotoxic pesticides on a pest and a pollinator in almond agroecosystems (Prunus dulcis)
… resistance to the pyrethroid insecticide bifenthrin has been reported in Kern County, California, determining the range of pesticides metabolized by P450s is critical for making management decisions designed to delay widespread cross- and multiple-resistance acquisition. In Chapter 2, I …
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Integrated pest management of the banana weevil, Cosmopolites sordidus (Germar), in South Africa
… to manage the pest. The efficacy of injecting bifenthrin, chlorpyrifos, fipronil, imidacloprid, oxamyl and water (control) into residual banana plants was determined. The chemicals were administered every even numbered month over 2 years at two locations in Southern KwaZulu-Natal, South Africa. …