WA Wine | WAVEx Webinar | March 4, 2021 | Economic Thresholds, Control Options for Leaffolder Pest
The white-headed grape leaffolder is a relatively new pest found in limited Washington wine grape vineyards. Thus far, pest populations have been localized in a small number of vineyards, However, near defoliation of young vineyards from the white-headed grape leaffolder has occurred and there is potential for contamination of fruit from the pest.
Dr. David James, entomologist from Washington State University, will share his findings from three years of study of the pest. His research is working to determine the economic impact of the pest, population densities that impact yields and fruit quality and when control methods are necessary. James will also identify effective insecticides that fit integrated pest management strategies and have minimal impact on beneficial insects.