Effects of Insecticides on Populations of the vegetable leafminer and Associated Parasites on Fall Pole Tomatoes
Authors: Johnson, M. W.; Oatman, E. R.; Wyman, J. A.
Source: Journal of Economic Entomology, Volume 73, Number 1, February 1980 , pp. 67-71(5)
Publisher: Entomological Society of America
Abstract:Several insecticides that control lepidopterous pests were evaluated for their effects on populations of Liriomyza sativae Blanchard and associated parasites in fall plantings of fresh market tomatoes in southern California. All rates of methomyl tested caused increases in L. sativae densities and reduced populations of 2 of its principal larval parasites, Diglyphus begini (Ashmead) and Chrysonotomyia (Achrysocharella) punctiventris (Crawford). Chlorpyrifos gave excellent control of the leafminer, but decimated its parasite populations. Parasitization of L. sativae by the larval-pupal parasite, Chrysocharis parksi Crawford, was reduced ca. 40% in plots treated with methomyl at 0.5 kg AI/ha. Dipel® did not adversely affect either the vegetable leafminer or its parasites.
No significant tomato fruit yield reductions occurred in methomyl-treated plants, although they had significantly more L. sativae mines than untreated plants.
Document Type: Research Article
Publication date: February 1980
- 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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