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Control of the Green Peach Aphid on Tobacco with Systemic Insecticides1

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During 1960 several systemic insecticides were tested for their efficiency in control of the green peach aphid, Myzus persicae (Sulzer), which attacks tobacco grown in Maryland. Preliminary studies were conducted in the greenhouse to compare the relative effectiveness and rates of disappearance of several systemic insecticides, both as granulated materials applied to the soil and as emulsions applied topically to the foliage. Dimethoate and phosphamidon emulsions resulted in a high level of mortality to confined aphids until the end of the test, a month after the insecticides were applied. Ph orate granules applied at the rate of 4 pounds per acre to soil in the pots caused a high rate of mortality until the end of the experiment. Soil applications of phosphamidon granules were ineffective.

During the growing season of 1960 field experiments were conducted to evaluate a number of systemic insecticides, their rate of application, the time of application and the methods of application. Phorate and Amer. Cyan. 18133 (O,O-diethyl O-2-pyrazinyl phosphororthioate) were effective when applied as granules sidedressed at the normal time tobacco is side-dressed with fertilizer.

Phosphamidon and dimethoate were both effective when applied at 0.25 or 0.5 lb. per acre. Late applications, made after aphid populations were well established, were more effective than early applications.

Document Type: Research Article

Publication date: October 1, 1962

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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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