Grape downy mildew
in severe infections, reducing photosynthesis and vine vigor Shoot and tendril symptoms Brown to dark lesions on young shoots and tendrils Distorted or [...] diseases in wine and table grape production worldwide. The disease spreads rapidly under warm and wet conditions, infecting leaves, shoots, and young berries [...] infections Flower and cluster symptoms Infection of inflorescences and young clusters, particularly around flowering Browning, drying, and collapse of flower