Efficacy of CME 134 Against Mosquitoes (Diptera: Culicidae): Effects on Nontarget Organisms and Evaluation of Potential Chemical Persistence

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Abstract:

CME 134, 1-(3,5-dichloro-2,4-dil:luorophenyl)3-(2,6-diHuorobenzoyl)urea, is very active against immature mosquitoes. The operational use rate appeared to be 0.0056 kg (AI)/ha (0.005lb/acre). When applied at the latter rate, the compound is safe to nontarget, aquatic organisms. CME 134 is stable in water under acidic conditions and less stable when temperature and pH increase simultaneously; sunlight has little effect on its aqueous stability. CME 134 might adsorb onto organic matter, thus affecting residual activity in field water. In highly polluted water, the chemical appeared to be lost because of microbial action as well as adsorption onto organic matter. In animal waste lagoons, biological activity persisted for several weeks during the fall and winter but only for a few days during early summer. Persistence in pasture water is limited to a few days when applied at levels up to 0.027 kg (AI)/ha (0.03 Ib/acre).

Document Type: Research Article

Publication date: August 1, 1988

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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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