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Alternaria Blight in Chickpea

Alternaria blight
Lesions on leaflets     General Information:
  • caused by Alternaria alternata / Alternaria tenuis.

  • Seed borne and soil borne disease.

  • Excessive vegetative growth, close, spacing, and spreading varieties favor disease development.

      Symptoms :

  • Water-soaked, small, circular, and purple lesions surrounded by chlorotic tissues on leaflets . Lesions later turn brown to dark brown.

  • The infected flowers die.

  • Circular, slightly sunken, and irregularly scattered lesions on the pods. Affected pods turn dirty black.

  • The pods contain shrivelled seeds.

 
Lesions on leaflets
Died infected flowers
Died infected flowers
Control :

 

  • Sowing late.
  • Adopting wider spacing.
  • Intercropping with linseed.
  • Avoiding excessive irrigation, and vegetative growth.
  • Adopting compact varieties.
  • Seed treatment with thiram 3g kg-1 or vinclozolin or Dithane M-45 (maneb).
  • Foliar application of vinclozolin or carbendazim or carbendazim plus thiram.

 

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