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Horticultural crops :: Fruits:: Apple

Fire blight: Erwinia amylovora

Symptom

  • The initial symptom usually occurs on leaves, which become water soaked, then shrivel turn brownish to black in colour and fall or remain hanging in tree.
  • The symptom spread to twigs. Terminal twigs wilt from tip to downward and also spread to branches.
  •  Fruits becomes water soaked, turns brown, shrivels and finally becomes black.
  • Oozing may be seen in the affected area.

Management

  • Removal and destruction of affected parts.
  • Removal of blighted twigs
  • Spray with Streptomycin 500 ppm.

 
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