Control the Corn Earworm in Grain Sorghum Heads1

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Single applications of several residual insecticides and Phosdrin were evaluated in South Carolina for Control of the corn ear worm, Heliothis zea (Boddie), in cases where it was infesting the heads of grain sorghum. Infestation data taken 3 and 14 days after treatment indicated that 1 or 2 pounds of DDT as spray or 2 pounds as dust and 2 pounds of Sevin as 10% dust were the only materials tested that gave good control throughout the crucial 2-week period. Present information indicates that these materials should be limited to use on sorghum grown for seed. Phosdrin at 0.5 pounds as a 2% dust resulted in fair control for 3 days, but failed for the longer period. Because of its short residual life, Phosdrin would be safe for use on feed sorghum. However, repeated applications would be needed to control the corn carworm.

Document Type: Research Article

Publication date: April 1, 1959

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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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