Uptake of Systemic Insecticides After Application to the Stems of the Cotton Plant

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When 32P-labeled phosphamidon in lanolin or 14C-labeled monocrotophos in gel were applied to 5 cm of cotton stem, uptake and translocation were greater than when the treated area was 2.5 cm or less in width. Also, uptake was much less when the treatments were applied to older stems with bark than when they were applied to young waxy stems without bark and was greater when a 2nd treatment was applied to the same area. Less uptake of monocrotophos occurred when the insecticide was applied in a gel than when it was applied in lanolin. Phosphamidon was found in all plant parts, but greater amounts were found in mature leaves.

Document Type: Research Article

Publication date: December 15, 1970

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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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