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Postharvest Diseases :: Fruits :: Grapes
Anthracnose/ Bird eye spot: Elsinoe ampelina

Symptoms

  • On berries, small, reddish circular spots initially develop.
  • The centers of the spots turn whitish grey and are surrounded by narrow reddish-brown to black margins.
  • Acervuli (fungal fruiting structures) eventually develop in the lesions.
  • A pinkish mass of fungal spores (conidia) exudes from these structures during prolonged wet weather condition.
  • Wetness for 24 hours or more and the temperature is above 36°F.
  • Splashing rain are spread the disease
Reddish circular spots Whitish grey spots

Management:

  • The diseased leaves and twigs should be pruned and burnt.
  • Spraying -Ferrous sulphate 2.5 kg + 0.5 pint sulphuric acid in 4.5 l of water.
  • Spraying -BM 1.0 % or Copper oxychloride 0.25% or Carbendazim 0.1% or Mancozeb 0.2% or Difolatan 0.2% or Chlorothalonil 0.2% or Bitertenol 0.1%.
  • Resistant varieties – Bangalore Blue, Beauty Seedless, Bharat Early, Golden queen, Large white.

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