Timing of Insecticides for Control of Colorado Potato Beetle (Coleoptera: Chrysomelidae) in Eastern Virginia Based on Differential Susceptibility of Life Stages

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Abstract:

Cyfluthrin, fenvalerate, and oxamyl + carbofuran were the most effective insecticides tested for control of all life stages of the Colorado potato beetle, Leptinotarsa decemlineata (Say). Rotenone and cryolite gave adequate control of small and large larvae and cryolite application significantly reduced numbers of overwintered and first generation adults in field experiments. Larvae mortality was delayed in triflumuron treatments, but field application preceded by an adulticide resulted in effective control and high tuber yield. Treatments in which different insecticides were alternated during the growing season resulted in commercially acceptable control and tuber yield. Analysis of L. decemlineata age distribution revealed that one specific life stage is predominant at any given time during the growing season. Choice of an insecticide can then be made based on the life stage present. The integration of various insecticides into a Colorado potato beetle management program is discussed.

Document Type: Research Article

Publication date: June 1, 1986

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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