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Effects of Water Management Practices on Economics of Insect Control on Cotton, Lower Rio Grande Valley, Texas

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Data from a pest management program on cotton in dryland and irrigated conditions was used to develop an economic evaluation of insect control in the Lower Rio Grande Valley of Texas during 1973-75. A strong economic advantage was shown for dryland production. Dryland cotton had 89% of its harvested bolls set by June 19 while irrigated cotton had 88% set by July 17; thus, irrigation delayed maturity. Dryland cotton required 5.5 kg/ha (4.91 lb/acre) less insecticide AI than irrigated cotton. Lint yields for dryland cotton were 541 kg/ha (483 lb/acre) vs. 615 kg/ha (549 lb/acre) for irrigated cotton and were equal by statistical analysis. However, production costs for dryland cotton were $266.88/ha ($108.05/acre) less than irrigated cotton and dryland cotton returned net profits of $142.99/ha ($57.89/acre) above those of irrigated cotton.

Document Type: Research Article

Publication date: June 1, 1979

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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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