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