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Agricultural crops :: Oilseeds :: Groundnut

Late leaf spot: Phaeoisariopsis personatum

Symptom
  • Infection starts around 55-57 days after sowing in Kharif and 42-46 days after sowing in Rabi.
  • Black & nearly circular spots appear on the lower surface of the leaflets.
  • Lesions are rough in appearance. In extreme cases many lesions coalesce resulting in premature senescence and shedding of the leaflets.
Management
  • Intercropping pearl millet or sorghum with groundnut (1 : 3) is useful in reducing the intensity of late leafspot.
  • Crop rotation with non-host crops preferably cereals.
  • Deep burying of crop residues in the soil, removal of volunteer groundnut plants are important measures in reducing the primary source of infection.
  • Spray Carbendazim 0.1% or Mancozeb 0.2% or Chlorothalonil 0.2%.


Healthy Leaf Infected Leaf

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