Toxicity of Selected Insecticides Applied Topically to Lygus hesperus
Authors: Leigh, Thomas F.; Jackson, Charles E.; Wynholds, Paul F.; Cota, Jesus A.
Source: Journal of Economic Entomology, Volume 70, Number 1, February 1977 , pp. 42-44(3)
Publisher: Entomological Society of America
Abstract:Lygus hesperus Knight collected from alfalfa at 2 California locations were treated topically with a total of 19 insecticides during the period 1968-75. LD50 values were developed. For some insecticides, comparisons of toxicity are made between 2 or more years and between locations. The development of resistance by L. hesperus to malathion and trichlorfon is evident at both locations, and resistance to monocrotophos is evident at one location. There is a trend toward greater resistance to organophosphorous and carbamate insecticides at the location with a greater history of use of insecticides.
Document Type: Research article
Publication date: 1977-02-01
- 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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