Identification Symptoms
- The symptoms of the disease are
noticeable only on old leaves. Initially, the lesions are angular, minute,
irregular, yellow to light brown, scattered over leaf lamina.
- As the lesions enlarge their
colour changes from brown to cinnamon and they become almost irregular.
- Fully developed spots are
characterized by dark margins and dull grey necrotic centres. In case of
severe infection such spots coalesce forming patches measuring 3.5-13 cm
in size, resulting in complete withering and defoliation of infected
leaves.