• Young lesions are small and diamond shaped. 
• As they mature, they elongate. Lesions may coalesce, producing a complete “burning” of large areas of the leaves.
• They vary in size and shape among inbreds and hybrids with different genetic background.
•  Race ‘O’ produced tan, elongated (2-6x 3-22 mm) lesion between the veins with limited margins, with buff to brown borders, usually attacks only leaves.

Management

• Spray with Mancozeb @ 2 g/ lit of water.
•  Resistant varieties  – Deccan, VL 42, Prabhat, KH-5901, PRO-324,     PRO-339, ICI-701, F-      7013, F-7012, PEMH 1, PEMH 2,     PEMH 3, Paras, Sartaj, Deccan 109.