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Economic Impact of a Flucythrinate-Induced Resurgence of the Comstock Mealyhug (Homoptera: Pseudococcidae) on Apple

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Outbreaks of the Comstock mealybug, Pseudococcus comstocki (Kuwani), occurred in three of the five test plots where the pyrethroed insecticide, flucythrinate, was evaluated for control of apple insects. Where no insecticides were used, mealybug-damaged fruit did not exceed 7.2%, whereas in flucythrinate plots damage ranged from 7.6 to 22.4%. All other pyrethroed and organophosphate materials evaluated maintained mealybug damage below 2.0%. Packout studies evaluating factors responsible for cullage and downgrading of commercial apples found mealybug damage resulted in losses of $9.39 and $3.58/ha on 'Red Delicious' and 'McIntosh' cultivars treated with flucythrinate, whereas losses in an adjacent plot treated with phosmet were $0.72 and $.85/ha, respectively.

Document Type: Research Article

Publication date: February 1, 1984

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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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