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Control of Apple Maggot Flies (Diptera: Tephritidae) with Pesticide- Treated Red Spheres

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The effectiveness of baited pesticide-treated red spheres in controlling Rhagoletis Pomonella (Walsh) flies was studied under both field-cage and field (orchard) conditions. Spheres (8-cm diameter) were treated with a mixture containing dimethoate, feeding stimulant, and residue-extending agent. Under field-cage conditions, where potted apple trees containing 'Gravenstein' apples were placed Singly inside field cages, a baited fresh pesticide-treated sphere was as effective as a baited fresh sticky sphere in killing released flies as well as reducing oviposition. A pesticide-treated sphere hung in a fruiting tree was as attractive to wild R. pomonella flies as a sticky sphere. Field studies conducted in four commercial orchards showed variation in the efficacy of baited pesticide-treated spheres in controlling R. pomonella. In one orchard with 'Gravenstein' apple trees, a commercial level of control <0.5% fruit damage) was not achieved using either baited dimethoate-treated spheres (2.5% fruit damage) or baited sticky spheres (4.0% fruit damage). In three other orchards with 'Liberty' (and some 'McIntosh') trees, nearly acceptable commercial-level control was achieved using either baited pesticide-treated spheres (1.0% fruit damage) or two foliar applications of azinphosmethyl (0.8% fruit damage).

Document Type: Research Article

Publication date: June 1, 1995

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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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