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Detasselling and Insecticides for Control of Ostrinia furnacalis (Lepidoptera: Pyralidae) on Sweet Corn

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Removing tassels before pollen was shed, in combination with insecticide treatments, was tested as a method of controlling the Asian corn borer, Ostrinia furnacalis GuenĂ©e, on sweet corn. Bacillus thuringtensis, methomyl, and carbaryl were tested alone and in combination with detasselling. Removal of the tassels reduced corn borer numbers significantly but insecticides were also necessary to obtain marketable yield. B. thuringiensis in combination with detasselling reduced insect numbers as much as 95% compared with the untreated control, and increased marketable sweet corn yields 20% compared with B. thuringiensis alone. Other treatments were less effective. Adding detasselling to weekly B. thuringiensis treatment increased the net return by $1,OO0–2,000/ha on Guam. In a trial where the density of corn borers was 200 per plant, no combination of treatments was effective.

Document Type: Research Article

Publication date: February 1, 1987

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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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