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Toxicity and Persistence of Surface Applied and Soil Incorporated Insecticides Against Diaprepes abbreviatus Larvae

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Laboratory bioassays determined that granular carbofuran, CGA-I2223 (O-[5-chloro-1-(1-methylethyl)-1H-1 ,2,4-triazol-3-yl] O,O-diethyl phosphorothioate), Dowco-275 (O,O-diethyl O-(6-fluoro-2-pyridyl) phosphorothioate, and ethoprop applied to the soil surface were efficacious against invasion by Diaprepes abbreviatus (L.) neonate larvae one mo posttreatment. Persistence appeared greater in dense soil media. In greenhouse and field tests, larval invasion was prevented by 2 drenches, 12 wk apart, of 0.4 g AI/liter ethoprop. Monthly aldicarb 10G applications did not prevent soil invasion. Aldicarb and ethoprop applications failed to eradicate established larval populations. Additional tests indicated 0.3 g AI/liter drenches of carbofuran or CGA-12223 prevented larval invasion, while concentrations of 1.2 g AI/liter significantly reduced levels of established infestations but were not eradicative. Soil incorporated granular CGA-12223, chlorpyrifos, or ethoprop was ineffective in prevention of larval establishment in soils weathered for 3 mo.

Document Type: Research Article

Publication date: February 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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