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Agricultural crops :: Pulses :: Chickpea

Ascochyta blight: Ascochyta rabiei

Symptom
  • All plant parts are affected.
  • Symptoms appear on leaves as water soaked lesions.
  • Symptoms include smaller circular brown spots on leaves.
  • Under favorable conditions, these spots enlarge rapidly and coalesce, blighting the leaves and buds.
  • In case of severe infection, the entire plant dries up suddenly.
  • The lesions are also developed on stems and petioles.
  • Late infections result in shriveled and infected seed.
  • The disease is seed borne in nature.
  • Left over debris in the fields serve as a source.
  • Wet and warm weather, and dense crop canopy are conducive to the spread of the disease

Management

  • Sow disease-free seed.
  • Follow rotation crop.
  • Intercrop with wheat, barley, mustard
  • Seed treatment with Carbendazim @ 1g/kg of seed. or Hot water seed treatment (52 C for 10 min) to lower the infestation.
  • Spray the crop with Mancozeb @ 2.5g/lit if noticed during the growth period.
    or Spray Wettable sulphur at the rate of 2.3g/lit of water.



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