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Field Tests with Chemical and Biological Insecticides for Control of Thymelicus lineola on Timothy

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Seven chemical and 3 biological insecticides were evaluated for control of Thymelicus lineola (Ochsenheimer) on timothy, Phleum pratense L. Fast acting effective control was obtained with single sprays of methomyl, carbaryl, carbofuran, trichlorfon, NRDC-143 [3-phenoxybenzyl (±) -cis-trans-2,2-dimethyl-3- (2.2-dichlorovinyl) cyclopropane carboxylate], WL 43467 [alpha-Cyano-3-phenoxybenzyl 2- (2,2-dichlorovinyl) -3,3-dimethylcyclopropane-I-carboxylate’, and EL 43775 ‘Benzene acetic acid, 4-chloro-alpha-(1-methylethyl)-, cyano (3-phenoxyphenyl) methyl ester]. Initially slower, but effective control also was obtained with the biological compounds Dispel, Thurbicide®, and a nucleopolyhedrosis virus. Dry weight yield of timothy was significantly higher in all treated plots than in the untreated plots.

Document Type: Research Article

Publication date: June 1, 1977

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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.
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