Economic Injury Levels for Yellow Sugarcane Aphid (Homoptera: Aphididae) on Seedling Sorghum

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Dynamic economic injury levels were calculated for yellow sugarcane aphid, Sipha flava (Forbes), an occasional pest of seedling sorghum, Sorghum bicolor (L.) Moech. Economic injury levels were based on evaluations of data from five field trials conducted in 1983 and 1984 near College Station, Tex. Multiple regression equations used to calculate economic injury levels related S. j/ava number, plant spacing, and plant height to yield per plant. Economic injury levels ranged from 3 to 27%, 4 to 43%, and 11 to 100% infested plants for plants 3.5, 4.5, and 5.5 cm tall when control costs ranged from $5 to $25 per hectare and crop values ranged from $250 to $500 per hectare.

Document Type: Research Article

Publication date: June 1, 1990

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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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