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Control of Hippelates Eye Gnats with Herbicidal Oils

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Applications of herbicidal oils to weeds and cover crops 0-9 days before disking of the ground yielded excellent control of Hippelates collusor (Townsend), a highly pestiferous eye gnat species in California. H. dorsalis Loew and other pestiferous species of lesser importance also were controlled. H. hermsi Sabrosky, a nonpestiferous species, was controlled with the predisking oil treatments in most of the tests.

Oil treatments made immediately after the disking of untreated weeds or crop residues also produced excellent control of H. collusorin most of the tests. The effectiveness of postdisking treatments decreased ast the time interval between the disking and treatments increased. Control of H. hermsi and H. dorsalis was not satisfactory with the postdisking treatments, indicating a different oviposition behavior for the these species as compared with H. collusor.

Document Type: Research Article

Publication date: June 1, 1966

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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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