Integrated pest management programs utilizing reduced risk insecticides/acaricides were evaluated in 7 Pennsylvania apple orchards and 4 peach orchards for the first year of a planned 4 year program under RAMP (Risk Avoidance Mitigation Program funded by USDA). The use of organophosphate, carbamate and pyrethroid insecticides was minimized or eliminated. Insecticides used included methoxyfenozide, indoxacarb, thiamethoxam, imidacloprid, pyriproxifen, and spinosad. Extensive use of pheromone mating disruption was made for several pests in both peach and apple using sprayable and hand-applied dispenser products. Multiple evaluations were made of secondary pest populations such as mites, aphids, and leafhoppers and their associated natural enemies to determine if biological control was encouraged with the use of more selective insecticides. Fruit injury by direct pests such as codling moth, oriental fruit moth, leafrollers, and cat-facing insects were evaluated during the season and at harvest. Applications of pesticides were based on pest phenology and economic thresholds. All plots were paired with or part of a larger grower block that received a conventional grower pesticide program for comparison of both fruit injury/marketability and for cost analysis.
Species 1: Lepidoptera Tortricidae Grapholita molesta (Oriental fruit moth)
Species 2: Lepidoptera Tortricidae Cydia pomonella (codling moth)
Keywords: reduced risk insecticides, orchard
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