like someone has sprinkled talc or flour all over the grass, then it might be suffering from powdery mildew. Powdery mildew on lawns is a fairly common fungal problem that affects many types of grass.

Downy mildew of lima bean, caused by the oomycete, Phytophthora phaseoli, is a common disease in Delaware production areas. Proper identification and management of the disease is critical for ...