Sunday, 17 November 2002 - 9:00 AM
0127

This presentation is part of : Ten-Minute Papers, Section F. Crop Protection Entomology

Optimization of insecticide application timing for control of codling moth and oriental fruit moth in North Carolina apples

Daniel M. Borchert, James F. Walgenbach, and George G. Kennedy. North Carolina State University, Department of Entomology, Gardner Hall, Raleigh, NC

A study was conducted to examine three different application timings of methoxyfenozide for control of first generation codling moth and second-generation oriental fruit moth. Application timings were based on oviposition models for codling moth and oriental fruit moth and residual activity data for methoxyfenozide. Two treatments received methoxyfenozide at 250 DD after codling moth biofix and a second application 14 or 21 days later. The third treatment received methoxyfenozide at 310 DD after codling moth biofix and a second application was applied 21 days later. Azinphosmethyl was applied at 250 DD and a second application 14 days later. Fruit damage was assessed three times at 14-day intervals. All of the insecticide treatments had significantly less damage than the untreated control, but there were no differences in fruit damage between the insecticide treatments.

Species 1: Lepidoptera Tortricidae Cydia pomonella (codling moth)
Species 2: Lepidoptera Tortricidae Grapholita molesta (Oriental fruit moth)
Keywords: Cydia pomonella, Grapholita molesta

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