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Control of Lesser Grain Borer (Coleoptera: Bostrichidae) with Chlorpyrifos-Methyl, Bioresmethrin, and Resmethrin: Effect of Chlorpyrifos-Methyl Resistance and Environmental Degradation

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Soft red winter wheat treated with 6 ppm chlorpyrifos-methyl, 2 and 5 ppm resmethrin, and 2 and 5 ppm bioresmethrin was stored under ambient conditions for 10 mo. Six field strains of lesser grain borer, Rhyzopertha dominica (F.), with chlorpyrifosmethyl resistance frequencies of 21-100% and a susceptible laboratory strain were confined on the treated wheat at regular intervals during storage. Three highly resistant strains were not controlled by the chlorpyrifos-methyl residues. Survival in the remaining three field strains and the laboratory strain increased as the storage interval increased. Chlorpyrifos-methyl resistance frequencies were correlated with residual mortality only immediately after insecticide application. Residues from the bioresmethrin and resmethrin applications controlled all six field strains for 10 mo.

Document Type: Research Article

Publication date: August 1, 1992

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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