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Moth Control in Stored Grain: Efficacy of Bacillus thuringiensis on Corn and Method of Evaluation Using Small Bins

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Surface-layer application of a commercial formulation of Bacillus thuringiensis Berliner was evaluated for controlling Indian meal moths, Plodia interpunctella (Hübner), and almond moths, Ephestia cautella (Walker), in corn stored in 2-m3 (ca. 60-bu) capacity bins. The bins were artifically infested, and efficacy was monitored by making weekly moth counts. collecting larvae and pupae in strips and spools of corrugated paper, periodically assaying samples of the grain, and evaluating insect feeding damage at the end of the storage season. The test method proved to be satisfactory, and doses of 100, 125, and 150 mg of B. thuringiensis formulation/kg of com in the 10-cm-deep surface layer reduced moth populations by ≥92%, reduced insect feeding damage by >82%, and prevented webbing of the grain surface.

Document Type: Research Article

Publication date: October 15, 1978

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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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