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Alfalfa Weevil1 Control in Idaho by Early Treatment of the First Crop2

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Abstract:

Hypera postica (Cyllenhal) has caused extensive injury to alfalfa in Idaho since the chlorinated hydrocarbon registrations for weevil control were rescinded. Three years of field evaluations at Aberdeen, Idaho, have demonstrated that economic injury by the weevil can be prevented by application of selected systemic insecticides shortly after growth of the 1st crop has begun. Both propoxur and carbofuran prevented injury when applied at this time. Phorate when applied early gave less control of the weevil than that obtained with the 2 other insecticides, but not significantly less.

Document Type: Research Article

Publication date: October 1, 1970

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.
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