Start Date: Sep 30, 2008
End Date: Sep 29, 2013
Management of navel orangeworm in walnuts is predicated on effective suppression of codling moth because this insect provides an opening for early season entry of navel orangeworm. A large-scale effort to use codling moth pheromone to disrupt mating will provide the basis for an indirect non-insecticide management option for navel orangeworm control. Additionally, smaller sub-plots will be treated with a pheromone mating disruption program directly targeting navel orangeworm. As part of this project, movement of navel orangeworm among the different host crops in the Sacramento Valley/north region (primarily walnut and almond) will be assessed in order to determine the parameters that determine success for mating disruption targeting navel orangeworm in walnuts. Part of this research will be conducted in collaboration with a scientist at the University of California, Agriculture and Natural Resources in Yuba City, CA, another participant in this areawide project.