Methods of application, insecticidal formulations, and rates of application were investigated during 1968 and 1969 to determine their effectiveness in controlling Diabratira virgifera LeConte. Granular and liquid formulations of organophosphate and carbamate insecticides were applied as broadcast treatments before planting, band treatments at planting, fertilizer-insecticide treatments at planting, and postplanting treatments at cultivation. Results indicated that application rates cannot be reduced by half the recommended rates without sacrificing a significant degree of corn rootworm control. Of the methods of application evaluated, postplanting treatments applied at cultivation time consistently provided outstanding control of western corn root worm larvae. There was a different response between the methods of application and insecticidal formulations. Granular formulations applied as broadcast, hand, and postplanting treatments resulted in better rootworm control than did liquid formulations applied by these methods. When insecticides were applied as fertilizer-insecticide combinations, however, liquid formulations gave better control than did granular formulations.
Document Type: Research Article
Publication date: December 1, 1972
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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.