Evaluation of Fenoxycarb, Bacillus thuringiensis, and Malathion as Grain Protectants in Small Bins

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Treatment of wheat placed in 3-bu bins with 10 ppm fenoxycarb controlled the rice weevil, Sitophilus oryzae (L.), confused flour beetle, Tribolium confusum Jacquelin du Val, and Indianmeal moth, Plodia interpunctella (Hübner), for two grain storage seasons in Kansas. Malathion (10 ppm) and Bacillus thuringiensis (Dipel, 125 ppm in 10 cm surface layer) were inadequate in controlling the moth and beetle species, respectively. The lesser grain borer, Rhyzopertha dominica (F.), was controlled, based on a laboratory bioassay of wheat that had been treated with fenoxycarb 1 year earlier. None of the insecticide treatments reduced the ability of the seed to germinate. Residue analysis showed no loss of fenoxycarb after 1 year of storage and approximate distribution in milled fractions as follows: bran, 25 ppm; red dog, 5 ppm; shorts, 3 ppm, and flour, 1 ppm.

Document Type: Research Article

Publication date: June 1, 1985

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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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