Small, heat-sealed polyethylene bags containing airtight food packets were fumigated with phosphine according to recommended procedures. Some internal packets contamed simulated insect penetrations. Toxic levels of phosphine were found in the 254- polyethylene film bags within 24 h, but high levels (92 ppm) were still present after 72 h of aeration. Phosphine did not permeate intact internal packets. There was no survival of Tribolium castaneum (Herbst) in packets with simulated penetrations. Some insects survived for 19 to 20 days in one type of intact, fumigated, or nonfumigated packet. None survived in the other intact, nonfurnigated packets. Phosphine residues exceeding 0.01 ppm were found in foods from slit or penetrated packets after 23 days of aeration.
Document Type: Research Article
Publication date: August 1, 1984
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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.