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Granulated Insecticides for Control of the European Corn Borer in Southwestern Ontario1

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In 1956,sweet corn plots treated with hand applicators three times at weekly intervals with granulated endrin at 0.5 lb. of toxicant per acre or with granulated heptachlor at 1.5 lb. for control of the European corn borer (Pyrausta nubilalis (Hbn.)) yielded over 95% marketable ears. Plots treated with DDT emulsion, granulated DDT, and granulated toxaphene at 1.5 lb. of toxicant per acre yielded 80%, 73%, and 62% marketable ears, respectively. Only 2% of the ears in the untreated check plots were marketable. In 1957, a commercial applicator being used. granulated heptachlor at 1 lb. of toxicant per acre, granulated endrin at 0.3 lb., and granulated Dipterex at 1.5 lb. reduced the number of larvae by over 90%; a DDT emulsion spray at 1.5 lb. and granulated DDT at lb., 87% and 84%, respectively. The percentage of marketable ears for the treatments were: heptachlor, endrin, and Dipterex, over 90%; DDT, over 85%; untreated check, 14%.

Document Type: Research Article

Publication date: February 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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