Suitability of Plictran® and Pirimor® for Use in a Pest Management Program on Strawberries in Southern California

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Plictran® (tricyclohexyltin hydroxide) at 0.25 and 0.75 lb AI/acre controlled Tetranychus urticae Koch but had measurable adverse effect on Phytoseiulus persimilis Athias-Henriot and predaceous insects. Although significantly fewer T. urticae occurred in plots receiving Plictran at 0.75 than at 0.25 lb, there was no significant difference in yield (25.1 and 25.3 tons/acre). These yields were significantly greater than that of the untreated check (19.8 tons/acre).

Pirimor® (2-dimethylamino) 5,6-dimethyl-4-pyrimidinyl dimethylcarbamate) at 0.125 and 0.25 lb AI/acre controlled Chaetosiphon fragaefolii (Cockerell), APhis gossypii Clover, and Macrosiphum euphorbiae (Thomas), but had no significant effect on T. urticae or P. persimilis. Significantly fewer predaceous insects occurred in the Pirimor 0.25 lb treatment, although there was no significant difference in the number of prey (T. urticae).

Document Type: Research Article

Publication date: April 1, 1976

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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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