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Horticultural crops :: Vegetables:: Brinjal

Alternaria leaf Spot :Alternaria melongenae, A. solani

Symptoms

  • Cracks appearing in leaf spot
  • The two species of Alternaria occur commonly, causing the characteristic leaf spots with concentric rings.
  • The spots are mostly irregular, 4-8 mm in diameter and may coalesce to cover large areas of the leaf blade.
  • Severely affected leaves may drop off.
  • A. melongenae also infects the fruits causing large deep-seated spots.
  • The infected fruits turn yellow and drop off prematurely.
spots in initial stage
spots in later stage

Management

  • Spray mancozeb @ 2 g/l
  • Spraying 1 per cent Bordeaux mixture or 2 g Copper oxychloride or 2.5 g Zineb per litre of water effectively controls leaf spots.
Updated on October, 2022

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