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Horticultural crops :: Plantation :: Rubber

Powdery mildew: Oidium heveae
Symptoms:
  • White powdery fungal growth appears on young leaves and also on matured leaves.
  • Infected leaves curl, crinkle, role inwards and fall off leaving the petiole attached to the tree giving a broom stick appearance.
  • The infected flowers and tender fruits shed.

Management:

  • Spary sulphur  3-5 times at 15 days interval.
  • Carbendazim 0.1% or Tridemorph 1.5% dusting alternated with sulphur dust 70%
  • Carbendazim +wettable sulphur and microsul (52% EC) is also effective.

Image source

http://rubberdisease.blogspot.in/, http://www.apsnet.org/publications/imageresources/Pages/ Rubberleavesinfected.aspx

 

Infected plant Powdery fungal growth on leaves

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