Dr. Walt Mahaffee, Research Plant Pathologist USDA-ARS-HCRL, has prepared the update below. Other researchers include Tara Neill, USDA, Brent Warneke, Oregon State University, and Lindsey Thiessen, North Carolina State University. This project receives funding from the Oregon Wine Board as part of its viticulture and enology research grant program. Read Dr. Mahaffee’s research update here.