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Persistence of Biological Activity of Seven Insecticides in Soil Assayed with Folsomia candida1,2

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Folsomia candida willem was used to assay persistence of toxic residues of dieldrin, isobenzan, phorate, chlorpyrifos, diazinon, Zinophos® (0, O-diethyl O-pyrazinyl phosphorothioate), find carbofuran in Plainfield sand at 13 and 24± 1. At 13 , residues of Zinophos, carbofuran, diazinon, and dieldrin killed all insects until 16 weeks after treatment of the soil at concentrations of 0.05 ppm the 0.5 ppm. The bioactivity of phorate persisted little more than one week, and isobenzan and chlorpyrifos were moderately residual, between the two extremes.

Dieldrin was as persistent at 24 as at 13, and the biological activity of isobenzan persisted slightly longer at the higher temperature. Phorate could again be classified as "slightly residual" and Zinophos, carbofuran, and chlorpyrifos were far less persistent at the higher temperature.

Document Type: Research Article

Publication date: August 1, 1973

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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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