Pests of Stored Peanuts: Toxicity and Persistence of Chlorpyrifos-Methyl
Virginia type peanuts were treated with 5, 10, 20, and 30 ppm chlorpyrifosmethyl and infested with fifth-instar almond moth, Cadra cautella (Walker), and Indianmeal moth, Plodia interpunctella (Hubner) at T1 T60, T120 and T180 (days after application). Rates of 5 and 10 ppm did not kill almond moth larvae at T1 and rates of 20 and 30 ppm were only marginally effective. Indianmeal moth larvae were more susceptible to chlorpyrifosmethyl than were almond moth larvae, but only the 20 and 30 ppm rates gave control at T1 Adult red flour beetles, Tribolium castaneum (Herbst), and merchant grain beetles, Oryzaephilus Mercator (Fauvel), were also tested at T1 T60, T120 T180 and T27O' Rates of 20 and 30 ppm were effective against both beetle species for at least 180 d after application.
Document Type: Research Article
Publication date: April 1, 1989
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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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