Corn Rootworm Oviposition in Soybeans

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Twenty-seven fields in Illinois in a soybean-corn rotation were monitored to measure density of rootworm adults in soybeans, oviposition in soybeans, and damage to corn roots the following year. There appears to have been some oviposition by both the northern corn rootworm, Diabrotica longicornis (Say), and the western corn rootworm, D. virgifera LeConte, in nearly all fields, but oviposition and subsequent damage to corn the following year were negligible where soybean fields were virtually free of weeds and volunteer corn. Noneconomic damage occurred when corn followed weedy soybean fields as well as when corn followed nonweedy soybean fields. Highest density of rootworm eggs was found at the base of volunteer corn plants in soybean fields that contained volunteer corn. The greatest root damage occurred in those fields that contained large amounts volunteer corn the previous year.

Document Type: Research Article

Publication date: April 1, 1978

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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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