PDMG-V3-15: 2007 Florida Plant Disease Management Guide: Grape (Vitis spp.)
Figure 6. Downy mildew symptoms on lower leaf surface. The patches of downy growth are usually directly beneath the yellowish green spots observed on the upper leaf surface.
Figure 6. Downy mildew symptoms on lower leaf surface. The patches of downy growth are usually directly beneath the yellowish green spots observed on the upper leaf surface.
