Field Testing Candidate Insecticides on Beans and Alfalfa for Control of Mexican Bean Beetle1, Potato Leafhopper2, and Plant Bugs3 in New York State4

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New and standard insecticides, applied as sprays to the foliage of red kidney beans, were evaluated for control of t he Mexican bean beetle, Epilachna varivestis Mulsant, in 1966 and 1967. Of 29 materials tested, only 2 failed to give satisfactory control of the beetle.

In 1968 granular formulations of 2 systemic insecticides, phorate (1O%G) and disulfoton (1O%G) , applied on top of snap beans at planting time gave good control of Mexican bean beetle.

Significantly fewer plant bug nymphs (Lygus lineolaris (Palisot de Beauvais) and poecilocapsus lineatus (F.)) were taken from treated plots of alfalfa than from control plots when 13 insecticides were applied as sprays in 1966. It was concluded that adult plant bugs and potato leafhoppers, Empoasca fabae (Harris), which were included in the sampling operation of this experiment, were not reliable indicators of insecticidal efficacy because of their high rate of activity and the ensuing possibility of migration from plot to plot.

In 1968, 1O to 21 insecticides applied as foliar sprays to plots of red kidney beans were found to control the potato leafhopper effectively, judged from nymphal counts taken in treatment and control plots.

Document Type: Research Article

Publication date: February 1, 1970

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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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