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This resource cover onion diseases such as: 

  • Damping-off 
  • purple Blotch 
  • Stemphylium Blight
  • Basal Rot
  • Downy Mildew
  • OnionSmut
  • Onion Smudge
  • Black Mould
  • Bacterial Brown Rot
  • Onion Yellow Dwarf
  • Anthracnose
  • White rot
  • Neck rot