Management of Purple Blotch in Onion

  • For managing the disease effectively, healthy seed should be used. 
  • Crop rotation of 2-3 years with non-related crops should be followed. 
  • Spray fungicides, Mancozeb 75% WP @ 800 gm/acre  or 
  • Hexaconazole 5% SC @ 400 ml/acre or 
  • Propiconazole 25% EC @ 200 ml/ acre at 10-15 days intervals from 30 days after transplanting or as soon as disease appears.

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