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Effect of Twospotted Spider Mites (Acari: Tetranychidae) on Large-Seeded, Virginia-Type Peanuts

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Abstract:

Even relatively small (0.1 to 11.5 per leaf), late-occurring populations of the twospotted spider mite, Tetranychus urticae Koch, had measurable detrimental effects on yields and value of large-seeded, Virginia-type peanuts over a period of 3 years. Large (10.7 to 20.8 leaf) populations occurring midway through the growing season reduced peanut yields by 2,803 kg/ha. Pre-infestation sprays of the acaricides dicofol, carbophenothion, and monocrotophos prevented population increases. The systemic insecticide aldicarb was effective as a preplant in-furrow treatment, as a split application (preplant plus early pegging), or as a pegging application. Carbofuran and disulfoton allowed spider mite populations to increase. The fungicides triphenyltin hydroxide, benomyl + mancozeb, and captafol, when applied on schedule, allowed population levels to increase to intermediate levels.

Document Type: Research Article

Publication date: December 1, 1983

More about this publication?
  • 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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