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Dimethoate Absorption and Its Translocation and Distribution in the Cotton Plant1

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Cotton plants grown in sand culture treated with P32-labeled dimethoate accumulated more insecticide in the leaves under environmental conditions which favored transpiration. Fruiting cotton plants treated with dimethoate as a soil drench accumulated relatively small amounts of the toxicant in the squares and bolls. Less than 1 microgram of dimethoate-equivalents was found in the stamens plus pistil of squares upon which the developing boll weevil (Anthonomus grandis Boheman) larvae feed.

Young cotton plants grown in dimethoate-treated nutrient solutions did not absorb the insecticide at the same rate they absorbed water. Also, plants grown in nutrient solutions deficient in phosphorus absorbed less insecticide than plants grown in a complete nutrient solution.

Document Type: Research Article

Publication date: December 1, 1961

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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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