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Horticultural crops :: Vegetables:: Musk melon and Water melon

Anthracnose Colletotrichum orbiculare (= C. lagenarium) 

Symptoms

  • The diagnostic features of anthracnose vary with the host.
  • Sunken, elongated stem cankers are most prominent on muskmelon, though leaf and fruit lesions also occur.
  • Large lesions girdle the stems and cause the vines to wilt. Stem cankers are less obvious on cucumbers, but leaf lesions are very distinct.
  • Watermelon foliage affected by anthracnose appears scorched; sunken fruit lesions are easy to recognize.
  • The anthracnose fungus overwinters on diseased crop residue. There also reported that the pathogen is carried in or on cucurbit seed.
  • In wet conditions each spring, the fungus releases airborne spores that begin new infections on vines and foliage.
  • Anthracnose usually becomes established in mid-season, after the crop canopy has fully developed.

Management

  • Seed treatment with Carbendazim 2g/kg of seed.
  • Spray Mancozeb 2g or Carbendazim 0.5g/lit.


 


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