Control of the Pink Bollworm and a Method for Estimating Losses in Cotton Yield1

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Abstract:

Experiments on the control of the pink bollworm (Pectinophora gossypiella (Saunders)) with DDT were conducted inside a screen cage. Based on data from these experiments, a method is proposed for determining the loss in yield of cotton caused by this insect. By counting all the damaged and undamaged locks on representative plants in a field, the formula below may be used for this purpose. Let y= actual yield, p= the percenage of locks pick able, and Y= potential yield, then Y = l00 yip and loss=Y-y. The damage by the insect also resulted in a reduction in the quality of lint.

Document Type: Research Article

Publication date: April 1, 1963

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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