WAVEx Webinar | Assessing Your Phylloxera Risk | April 20, 2022 Many Washington vineyards are more susceptible to phylloxera due to soil type than previously thought. Learn how to use the recently developed Phylloxera Risk Assessment Map to determine the risk of phylloxera in your vineyards. Washington State University’s Dr. Michelle Moyer, who helped create the risk map, will discuss how to use it and other resources available, and Dr. Doug Walsh will share preliminary results from two years of pesticide efficacy trials.