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ARS Home » Pacific West Area » Parlier, California » San Joaquin Valley Agricultural Sciences Center » Commodity Protection and Quality Research » Research » Research Project #414658

Research Project: Efficacy of mating disruption to control navel orangeworm in walnuts

Location: Commodity Protection and Quality Research

Project Number: 0500-00044-035-07-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 30, 2008
End Date: Sep 29, 2013

To validate and demonstrate areawide management approaches, primarily mating disruption, for the control of navel orangeworm in walnuts grown in the northern region of California’s central valley.

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.