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United States Department of Agriculture

Agricultural Research Service

Research Project: Sampling for Lepidopteran Infestation in Walnuts

Location: Commodity Protection and Quality

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

Start Date: Dec 01, 2013
End Date: May 01, 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: 11/29/2015
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