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The alfalfa weevil, Hypera postica (Gyllenhal), was first discovered in Kansas in 1960 and had spread to 36 western counties by the end of 1968. Field evaluations of 14 insecticides as foliar sprays to control weevil larvae were conducted in one of the western counties. All treatments significantly reduced larval populations. Most gave excellent initial kill, but residual control varied. Rainfall may have reduced the residual effectivenes of some insecticides. Carbofuran outstanding initial toxicity and superior residual effectiveness for at least 28 days.
Document Type: Research Article
Publication date: December 1, 1969
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.