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Use of Chemical Defoliants on Peach Trees in Integrated Program to Suppress Populations of Green Peach Aphids1,2,3

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Abstract:

When peach trees were sprayed with chemical defoliants to control green peach aphids, Myzus persicae (Sulzer), the number of aphids per leaf was higher on leaves remaining on the sprayed trees, but the number of aphids per tree was higher on the unsprayed trees. The high density of aphids per leaf in the foliage still present on. sprayed trees was associated with an increase in deposition of syrphid eggs per leaf. Also, the number of aphid eggs was significantly fewer on the sprayed trees than on the unsprayed trees. The decrease in deposition of aphid eggs in 1966 compared with 1965 was correlated with the differences in trends of aphid population, temperatures, and syrphid activities.

Document Type: Research Article

Publication date: April 1, 1968

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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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