Applications of heptachlor placed along both sides of rows of rutabagas reduced pupal parasitism of the cabbage maggot (Hylemya brassicae (Bouche)) by Aleochara bilineata (Gyll.) more than 80%. At harvest, more than twice as many root maggot pupae and only one quarter as many parasites survived in the treated as in the untreated rows. In the insecticide-free region (a band about 4 to 5 inches wide around the plants) of the treated rows, there were approximately the same numbers of root maggots as in the untreated rows; the insecticide did not appear to affect the numbers of maggots attacking the plants. A similar treatment of parathion reduced the parasitism by 23% and caused no apparent reduction in root maggot populations. When applied in a 5-ineh band in the row and just below the surface of the soil, heptachlor and parathion gave almost complete control of root maggots. The effect of such treatments on the predators and parasites has not been determined.
Document Type: Research Article
Publication date: October 1, 1960
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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.