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Phosphine gas, derived from aluminum phosphide pellets, was used to fumigate bagged flour in plywood containers covered with 4-m polyethylene film. Caged insects, representing eggs, larvae, pupae, and adults of Plodia interpunctella (Hübner), Rhyzopertha dominica (F.), Tribolium confusum Jacquelin duVal, Tribolium castaneum (Herbst), and Attagenus megatoma (F.), were used for biossay. When 160 pellets/28 m3 (1000 ft3) were placed inside the containers or under the containers, all life stage of the insects were dead within 48 and 72 h, respectively. When 14 and 28 pellets/28 m3 were placed under the container, the insect larvae, pupae, and adults were killed by 48-, and 24-h exposures, respectively. Chemical analysis of the flour samples showed that flour fumigated 7 times contained no more residue of phosphine than flour fumigated I time. The greatest amount of residue found in the flour was 0.003 ppm.
Document Type: Research Article
Publication date: October 1, 1973
More about this publication?
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.