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Evaluation of Insecticides for Control of Codling Moth1 on Pears in California and Their Usefulness in an Integrated Control Program2

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Field tests were conducted on pears at San Jose, Calif., during 1967 and 1968 to evaluate several insecticides for control of Laspeyresia pomonella (L.) and for the effects on other pest and hendirial species. Azinphosmethyl + Volck SupremeR oil, carhofuran, Fundal SP® (N'- (4-chloro- 0-tolyl)-N,N -dimethylformamidine, hydrochloride), Gar- dona,R (2-chloro-1- (2,4,5-trichlorophenyl) vinyl dimethyl phosphate) , lmidanR (O,O-dimethyl S-phthalimidomethyl phosphorodithioate) , and Supracidt® (O,O-dimethyl phos phorodithioateS-ester with 4-(mercaptomethyl)-2-methoxy- Δ 2-1,3,4-thiadiazoIin-5-one) were all relatively effective in wntrol of the codling moth. lmidan and azinphosmethyl + oil were the more effective materials against pear psylla, Psylla pyricola Foerster. Iundal sp controlled both the European red mite, Panonychus ulmi (Koch), and the two-spotted spider mite, Tetranychus urticae Koch, and was the only insecticide treatment in which one or the other of the mite species failed to increase following the last application. Buildup of T. urticae occurred 4-5 weeks after the last application in the azinphosmethyl + oil treatment, whereas populations increased earlier and were more severe in the carhofuran and Gardona treatments. P.ulim increased to moderate levels in the lmidan and Supraeide treatments. All the materials were detrimental to predators, especially to anthocorids.

Document Type: Research Article

Publication date: October 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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