Insect Growth Regulators: New Protectants against the Almond Moth in Stored Inshell Peanuts

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Four insect growth regulators (IGRs) were tested for efficacy in suppressing populations of Ephestia cautella (Walker) in inshell peanuts. In laboratory tests, peanuts were sprayed with several concentrations of either hydroprene, methoprene, diflubenzuron, or Stauffer MV-678 (1-(8-methoxy-4,8-dimethylnonyl)-4-(I-methylethyl)benzene) and infested with 200 eggs of almond moths. Concentrations below 100 ppm of all IGRs except diflubenzuron (hydroprene, 5 ppm; methoprene, 25 ppm; MV-678, 90 ppm) completely suppressed adult emergence. These IGRs also reduced fecundity at lower concentrations. MV-678 at ca. 30 ppm completely inhibited oviposition. Residues of hydroprene, methoprene, and MV-678 were as effective as residues of malathion (35 ppm) against the almond moth after at least 8 months of storage.

Document Type: Research Article

Publication date: December 1, 1979

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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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