Green Peach Aphid Distribution and Potato Leafroll Virus Occurrence in the Seed-Potato Producing Areas of Idaho

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An investigation of the distribution of the green peach aphid, Myzus persicae (Sulzer), principal vector of potato leafroll virus in Idaho, and the occurrence of this virus in the 4 major seed-potato producing areas of Idaho was conducted during the years 1958 through 1962. Two areas had consistently higher aphid numbers than the other 2 areas. These higher aphid numbers were apparently associated with a larger number of home gardens in which winged migrants developed. Aphid development in these 2 areas was favored also by slightly longer growing seasons and rank potato-vine growth. Weather records indicate that differences in temperature or precipitation among the 4 study areas were not involved in the observed differences in aphid numbers. Higher aphid numbers were found in fields near towns than in outlying fields. Within individual fields highest green peach aphid numbers were found on field margins. When fields were near towns the margin nearest the town usually had a heavier infestation than the distant margin. As the growing season progressed there was a tendency for the aphids to disperse. A high leafroll virus incidence was directly correlated with high green peach aphid numbers when comparing the 4 areas among themselves and when comparing fields within each of the 4 areas.

Document Type: Research Article

Publication date: February 1, 1965

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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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