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Horticultural crops :: Vegetables:: Gourds

Downy mildew: Pseudoperonospora cubensis

Symptoms

  • Symptoms resembling mosaic viz, pale green areas separated by dark green areas appear on upper surface of leaf.
  • During wet season, corresponding lower surface is covered with faint purplish fungal growth.
  • The entire leaf dries up quickly.

Management

  • Use of bed system with wide spacing with good drainage and air movement and exposure to sun help to check the disease development.
  • Spray with Moncozeb 0.2 % or Chlorothalonil 0.2% or Difolaton 0.2% or Ridomil MZ 72 0.1%
  • Seed treatment with Apron SD 35 @ 2 g./kg. followed by spraying with Mancozeb 0.2% is effective in reducing the disease.

 

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