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Attempt to Suppress Curly Top and Beet Western Yellows by Control of the Beet Leafhopper1 and the Green Peach Aphid2 with Insecticide- Treated Sugar beet Seed3,4

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Effective doses of phorate and disulfoton were phytotoxic to seedling- sugarbeet plants when they were used to treat the seed, particularly under moisture stress, and doses that were low enough so plant stands were not reduced appreciably did not control most insects on the small plants long- enough. However, treatment of sugarbeet seed with disulfoton gave some protection for at least 3 months against curly top infection transmitted by the beet leafhopper, Circulifer tenells (Baker), though the same dose of disulfoton or phorate gave no control of the preen peach aphid, Myzus persicac (Sulzer), and therefore did not retard infection by beet western yellows. Larger populations of aphids developed on plants from treated seed than on those from untreated seed, which is in agreement with the hormoligosis theory which predicts stimulation from a mild stressing factor.

Document Type: Research Article

Publication date: April 1, 1970

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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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