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Effectiveness of Chlorpyrifos for Control of Synanthedon pictipes and S. exitiosa in Peach Orchard Tests of Young Trees with Emphasis on Timing Applications

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Chlorpyrifos (185 g AI/100 liters), applied to young peach trees (beginning with 2nd leaf) for 3 consective years, substantially reduced infestations of the peachtree borer, Synanthedon exitiosa (Say), when a single application was made on June 15, July 15, or Aug. 15, each year. A similar trend for control at the same application times appeared to be developing for the lesser peachtree borer, S. pictipes (Grote and Robinson). For S. exitiosa, a single application, at half the present recommended rate, per season during the summer was effective. Flexibility in timing of the application during the season, a low rate, and reduced number of applications are advantages that might be incorporated into a pest management program for control of peach borers.

Document Type: Research Article

Publication date: December 15, 1980

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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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