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United States Department of Agriculture

Agricultural Research Service

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Research Project: Sampling for Lepidopteran Infestation in Walnuts

Location: Commodity Protection and Quality Research

Project Number: 2034-43000-037-39-A
Project Type: Cooperative Agreement

Start Date: Dec 1, 2013
End Date: May 1, 2014

Compare, between test sites and across successive harvests, the proportion of walnuts infested by codling moth and the proportion navel orangeworm.

Obtain samples of walnuts from study sites during harvest, and store at -20C until evaluation. Crack open individual walnuts, and note defect categories, if any. If insect infested, categorize damage based on presence of life stages, webbing, or frass.

Last Modified: 10/16/2017
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