Value of Virus Presilk Treatment for Corn Earworm1 and Fall Armyworm1 Control in Sweet corn2,3

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A combination of Heliathis nuclear-polyhedrosis virus and DDT resulted in less damage to early-season sweet corn than the virus or DDT alone. A single early-tassel treatment with the virus gave control of corn earworm, Heliothis zea (Boddie), comparable to an early-tassel treatment followed by 5 silk-stage treatments of either the virus or DDT. In a late-season test against a complex of corn earworm; fall armyworm, Spodoptera frugiperda (J. E. Smith) ; and European corn borer, Ostrinia nubilalis (Hũbner), late-whorl or early-tassel treatment with a combination of corn earworm and fall armyworm nuclear-polyhedrosis viruses was as effective as the late-whorl or early-tassel treatment followed by 5 silk treatments with the viruses.

Document Type: Research Article

Publication date: February 1, 1971

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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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