In plot tests evaluated by emergence traps, excellent control of Hippelates pusio was obtained with aldrin at 1 or 2 pounds per acre, chlordane at 4 pounds per acre, and BHC at 2 ½ pounds of gamma isomer per acre. The continued effectiveness of the original BHC application against a second generation of gnats was demonstrated by a second test begun 40 days after the first. DDT was found to be of little or no benefit at rates up to 16 pounds per acre. When afternoon soil temperatures a t a depth of 6 inches aver-aged 83 and 78 degrees F., the development of H. pusio from oviposition to the peak of adult emergence took an estimated period of 21 and 26 days, respectively. In a test of emergence traps made where ants were abundant, the jars collected less than 25% of the adult gnats experimentally introduced. Another test indicated that relatively few gnats were removed from the collecting jars by scavengers. Means of improving the emergence trap are suggested.
Document Type: Research Article
Publication date: February 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.