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Effect of Insecticides on European Corn Borel and Yield of Silage Corn in Prince Edward Island

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Abstract:

Field studies were conducted from 1974–76 to determine the effectiveness of several insecticides applied in formulations of granules or sprays in controlling populations of Ostrinia nubilalis (Hübner) in silage corn and the effect of control on the whole plant and the grain component yield of corn harvested for silage. All treatments reduced significantly the number of borer tunnels per plant recorded at harvest time with carbofuran, ethyl parathion, diazinon, fonofos, NRDC-143 (3-phenoxybenzyl (±) -cis,trans-2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropane carboxylate), WL 43775 (Benzeneacetic acid, 4-chloro-alpha-(1-methylethyl)-cyano(3-phenoxyphenyl)-methyl ester), N-2596 (O-Ethyl S-(p-chlorophenyl) ethyl-phosphonodithioate), and fensulfothion providing the best control. Silage yields were not affected significantly by any treatments, despite excellent borer control. However, a significant increase (P = 0.05) in the grain component of the silage was observed in 1974 from plots treated with carbofuran, ethyl parathion, carbaryl, and diazinon.

Document Type: Research Article

Publication date: December 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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