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Rapid Knockdown Activity of Dowco®217, a New Insecticide1

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Dowco® 217 (dimethyl 3,5,6-triehloro-2-pyridyl phosphate) is a broad-spectrum insecticide with unusually fast knockdown action. Insects such as the German cockroach, Blattella germanica (L.), the American cockroach, Periplaneta Americana (L.), mosquitoes, Aedes sp., and the house fly, Musca domestica L., knocked down by Dowco 217 did not revive. The insecticide has low mammalian toxicity with acute oral LD50 values of 668 mg/kg for mice, 869 for rats, and greater than 1000 for dogs.

Document Type: Research Article

Publication date: June 1, 1969

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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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