Exothermic Inert-Atmosphere Generators for Control of Insects in Stored Wheat

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Use of exothermic inert-atmosphere generators for displacing the normal atmosphere in stored wheat was demonstrated. The time required to displace normal atmosphere with an oxygen-deficient atmosphere was dependent upon the rate of flow of gases released into the tank and the degree of pretreatment purging achieved prior to loading the tank with grain. Atmospheric concentrations containing less than 1% O2 for 24 hours killed adult confused flour beetles, Tribolium confsusm Jacquelin duVal, but were not effective against immature stages of the rice weevil, Sitophilus oryzae (L.), for time periods of 72 to 96 hours. No significant differences between treated and untreated wheat were found in tests to determine the effect of the inert atmosphere on grain quality.

Document Type: Research Article

Publication date: April 16, 1973

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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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