Washington State University viticulture extension specialist Dr. Michelle Moyer suggests growers consider the following when developing a ­disease management program: •    Reproductive rate of the pathogen. How fast can the disease reproduce in your vineyard? Is weather conducive to reproduction? •    Speed of your reaction time. Do you have enough sprayers to cover your acreage in a timely manner? •    Spray coverage. How good is your spray penetration? During years of high disease pressure, such as 2011, poor spray coverage in some vineyards resulted in significant disease problems. •    Implications for next season. Are you allowing build-up of disease within […]