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In 2 of 3 tests conducted to evaluate chemicals for control of the Pacific Coast wireworm, Limonius canus LeConte, and the Great Basin wireworm, Ctenicera pruinina (Horn), broadcast applications resulted in lower percentages of injured and culled tubers than did sidedress applications. In the 3rd test, there were no differences between broadcast, furrow, and at plant sidedress applications. Individual compounds differed in effectiveness depending on method of application in all 3 tests. Compounds that were very effective included N-2596 (S-(p -chlorophenyl)O-ethyl ethylphosphonodithioate), CGA 12223 (0 - [5-chloro- 1-( 1-methylethyl)- lH -1 ,2,4-triazol-3-yl] 0,O-diethyl phosphorothioate), and ethoprop. All 3 were as effective as fonofos (used as a standard) in reducing injury to tubers. Wireworm infestations (presence of wireworms or feeding on seed pieces and tubers) increased from time of planting until 16 wk; however, the highest number of wireworms per hill was found at 6 wk, but decreased thereafter. No difference in tuber injury was noted between 15–16 wk after planting and at harvest (20–21 wk).
Document Type: Research Article
Publication date: August 1, 1979
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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.