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Comparison of a Nuclear Polyhedrosis Virus and Chemical Insecticides for Control of the Beet Armyworm (Lepidoptera: Noctuidae) on Head Lettuce

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A multinucleocapsid nuclear polyhedrosis virus (SeMNPV) isolated from the beet armyworm (BAW), Spodoptera exigua (Hübner), was field tested and compared with methomyl and permethrin for control of BAW on head lettuce. In 3 years of testing (1980–1982), weekly population monitoring data indicated that application of the SeMNPV at a rate of 1.1 × 1012 polyhedra per ha caused BAW population reductions equivalent to those resulting from the application of methomyl (1 kg/hal and permethrin (110 g/ha). Application of the SeMNPV at lower rates (5.5 × 1011 and 2.8 × 1011 polyhedra per ha) resulted in less effective levels of control.

Document Type: Research Article

Publication date: June 1, 1986

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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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