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Diseases of Gourds - Kisan Suvidha
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Diseases of Gourds

diseases of gourds

Diseases of Gourds

Major diseases of Gourds are:-

1.Downy mildew: Pseudoperonospora cubensis

Downy mildew in gourds

Symptom:
  • Symptoms resembling mosaic viz, pale green areas separated by dark green areas appear on the upper surface of the leaf.
  • During the wet season, the 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.

 

2.Powdery mildew: Erysiphe cichoracearum

powdery mildew in gourds

Symptom:
  • Powdery mildew is especially prevalent in hot dry conditions.
  • White or brown mealy growth will be found on upper and lower surfaces and stems.
  • Under severe infestations, the plant will be weakened and stunted.
Management:
  • The disease can be controlled by spraying Wettable sulphur 0.1%.

 

3.Mosaic: PRSV/CMV

Mosaic virus

Symptom:
  • A virus distributed world wide, affecting most cucurbits but rarely affecting watermelon.
  • New growth is cupped downward, and leaves are severely mottled with alternating light green and dark green patches.
  • Plants are stunted, and fruits are covered with bumpy protrusions. Severely affected cucumber fruit may be almost entirely white.
Management:
  • The virus is readily transferred by aphids and survives on a wide variety of plants.
  • Varietal resistance is the primary management tool and eliminating weeds and infected perennial ornamentals that may harbour the virus is critical.
  • Spray with any one of the systemic insecticides.

 

 

Source-

  • TamilNadu Agritech Portal

 

Comments:

  • Dr.Arun Kumar
    21/07/2017 at 10:37 AM

    For managing powdery mildews it is suggested to spray raw cow milk (गाय का कच्चा दूध) 10% diluted with water at weekly intervals.

  • Dr.Arun Kumar
    21/07/2017 at 10:39 AM

    The milk of traditional cows is more effective than jersey cows.