Malathion resistant and susceptible strains of two-spotted spider mites, Tetranychus telarius (L.), were removed from the bean plants of their respective parent colonies and reared for 3 weeks on bean plants fed a basic nutrient solution as well as on plants fed this solution with the nitrogen or phosphorus levels increased 3 and 4 times, respectively. LD50's o[ malathion for both strains reared on the bean plants and for their parent colonies were determined by bioassay. Results indicated that susceptibility of both strains was altered from that of the paren t colonies.
Document Type: Research Article
Publication date: October 1, 1964
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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.