The Effects of Field Applications of Some of the Newer Pesticides on Honey Bees1

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From these experiments residues of 0.25 lb. actual dieldrin per 100 gallons of spray may be highly toxic to honey bees (Apia MelliferaL.) for periods at least up to 96 hours after application. Sevin® (1-naphthyl N-methylcarbamate) wet table powder, 50%, or a 36% mull at dosages of lib. actual per 100 gallons was highly toxic as a contact poison. Residues of 1 lb. actual Sevin were highly toxic for a period of 24 hours after application. Their toxicity diminished after a period of 96 hours. The toxicity of Am. Cyanamid No. 5223 (Cyprex®=dodecyl guanidine acetate) at a dosage of lib. per 100 gallons of water was not significantly different from that of the control bees.

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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