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Pirimiphos methyl at a rate of 7.8 ppm was more effective than malathion at a rate of 10.4 ppm as a protectant on hard winter wheat against the confused flour beetle, Tribolium confusum Jacquelin duVal, and the red flour beetle, T. castaneum (Herbst), in a 12-month 0.14 m3 small bin storage study. Malathion degraded to 16.3% of the initial deposit during the 12-month period but pirimiphos methyl residue degraded more slowlyas 83.1%of the initial residue remained on the wheat at 12 months post-treatment. Toxicity studies showed that the residues of pirimiphos methyl on wheat were very effective against both species of Tribolium.
Document Type: Research Article
Publication date: February 1, 1977
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.