• Lesions produced by A. arachidis are brown in colour and irregular in shape surrounded by yellowish halos.
• Symptoms produced by A. tenuissima are characterized by blighting of apical portions of leaflets which turn light to dark brown colour.
• In the later stages of infection, blighted leaves curl inward and become brittle.

• Lesions produced by A. alternata are small, chlorotic, water soaked, that spread over the surface of the leaf.
• The lesions become necrotic and brown and are round to irregular in shape.
• Veins and veinlets adjacent to the lesions become necrotic. Lesions increase in area and their central portions become pale, rapidly dry out, and disintegrate.
• Affected leaves show chlorosis and in severe attacks become prematurely senescent.
• Lesions can coalesce, give the leaf a ragged and blighted appearance.

Management

• Foliar application of Mancozeb (0.3%) or Copper oxychloride (0.3%) or Carbendazim(0.1%)