Identifying Downy mildew and Powdery mildew on Grapevine
Downy mildew symptoms:
Downy mildew affects all green parts of the plants like leaves, shoots, and
fruits. The symptoms are the discolored lesions of regular or irregular shape,
that are initially yellow and later turn to brown and dry. The underside of the
discoloration will have white cottony fungal growth.