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Granular insecticides for control of European corn borer, Ostrinia nubilalis (Hübner), have been studied at the European Corn Borer Research Laboratory, Ankeny, Iowa, since 1953. The effect of two types of diluent (clay and cob), 3 sizes of diluent (16/20-, 20/30-, 40/50-mesh), and 3 rates of application (5, 10, and 20 lb/acre) of granular diluents for first- and second-generation borers were studied in 1963. The endrin impregnated on attapulgite clay diluent gave significantly better control of both first- and second-generation borers. Of the 3 diluent sizes tested, endrin formulated on the 20 to 30-mesh granules gave significantly better control of first-generation corn borers, and 40- to 50-mesh formulations gave better control of the second-generation borers. Ten pounds of 2.5% endrin formulation or 20 lb of 1.25% endrin formulation per acre gave good control of both generations of borers, but 5 lb of 5.0% endrin formulation per acre was less effective.
Document Type: Research Article
Publication date: December 1, 1965
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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.