Abstract. Implementation of the Food Quality Protection Act has caused a reduction in the availability of organophosphate insecticides, which have been the cornerstone of apple management systems nearly 40 years. Methoxyfenozide and indoxacarb are potential alternatives for management of codling moth and oriental fruit moth. A field study was conducted to examine the effects of spray volume and number of applications of methoxyfenozide for control of first generation codling moth and second-generation oriental fruit moth. Spray volume was tested at 73 and 220 gallons per acre, and treatments were one versus two applications at 14-day intervals. Two applications of azinphosmethyl were applied at 220 gallons per acre as a standard, as well as a non-treated control. Weekly damage assessments were conducted in the field and all treatments appeared equally effective, and superior to the control. Fruit were collected every two weeks and exposed to lab colonies of codling moth and oriental fruit moth. Egg survival and number of larval entries into fruit were higher for one application versus two, but the effect of spray volume was not as dramatic. Residue samples were collected and processed at two-week intervals. Indoxacarb was examined for efficacy against the second-generation codling moth and the third generation oriental fruit moth as a potential resistance management tool.
Species 1: Lepidoptera Tortricidae Cydia pomonella (codling moth)
Species 2: Lepidoptera Tortricidae Grapholita molesta (oriental fruit moth)
Keywords: methoxyfenozide, apples
The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA