Demeton Residues on Turnips, Squash, Tomatoes, Peppers and Snap Beans1

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The systemic pesticide demeton penetrates into the edible portions of vegetables in varying degrees. Little, if any, toxicant was found to he translocated into developing turnip roots, squash, tomatoes, and peppers as a result of foliar applications. Demeton-treated turnip tops contained initial residues high enough to require at least 21 days' weathering and growth to reach tolerance levels. Snap beans, having It lower tolerance, required a 14-day interval between last application and harvest to satisfy Federal requirements.

Document Type: Research Article

Publication date: August 1, 1959

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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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