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Effects of Methyl Parathion, DDT, and Toxaphene on the Boll Weevil, Boll worm, and Cotton Plant in North Carolina1,2

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Abstract:

Toxaphene + DDT, methyl parathion + DDT, and toxaphene + DDT + methyl parathion sprays applied early and late in the cotton season provided adequate control of the boll weevil, Anthonomus grandis Boheman, and the boll worm, Heliothis zea (Boddie), during 1961- 63. Differences in effectiveness of these treatments against these insects were not significant. Also, no significant differences in total square or boll production, plant height at harvest, or total yield were found among these treatments. Treatments of methyl parathion + DDT and toxaphene + DDT + methyl parathion delayed squaring about 5-10 days, and this delay in squaring resulted in a corresponding delay in maturity. Thus, the reproductive physiology of cotton was affected slightly by methyl parathion.

Document Type: Research Article

Publication date: April 1, 1970

More about this publication?
  • 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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