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Horticultural crops :: Plantation :: Rubber

Colletotrichum Leaf Disease: Colletotrichum acutatum, C .gloeosporioides
Symptoms:
  • Infects tender leaves, mostly at the leaf tip region.
  • Spots are small, brown in colour and is sorrounded by an yellow hallo.
  • Numerous  spots coalesce and dry up leading to defoliation.
  • The infected leaves often crinkle and become distorted before shedding.

Management:

  • Spraying with Bordeaux mixture 1%, copper oxychloride 0.125% (Fytdan 2.5 g/l) mancozeb 0.2% (Dithane/ Indofil M 45 2.66 g/l) or carbendazim 0.05% (Bavastin 1 g/l) at 10 - 15 days intervals is effective.

Image source

http://rubberdisease.blogspot.in/

Infected Leaf tips

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