Identification 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.