Grape downy mildew
diseases in wine and table grape production worldwide. The disease spreads rapidly under warm and wet conditions, infecting leaves, shoots, and young berries [...] favorable conditions for disease development, and maintaining protective coverage on susceptible tissues during high-risk periods. Cultural and preventive measures [...] infections, reducing photosynthesis and vine vigor Shoot and tendril symptoms Brown to dark lesions on young shoots and tendrils Distorted or stunted shoot