In the laboratory, dichlorvos residues of 0.8 to 1.9 ppm on Soft Red Winter wheat produced 90 to 100% mortalities among rice weevil adults, Sitophilus oryzae (L.) , and reduced the number of progeny by 89% or more. Residues of 3.8 ppm or more provided 85% or more mortality of 3rd- and 4th-instar larvae. Initial residues of 3.8 to 8.0 ppm decreased 89 to 76%, respectively, in 28 days.
Document Type: Research Article
Publication date: April 1, 1968
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.