Downy mildew in bottle gourd plants is caused due to irregularity of water and moisture content in the ground. Downy mildew is a serious disease in bottle gourd plants which is caused by the fungus PseudoPeronospora cubensis. This disease can affect plants at any growing stage. Due to this disease, brown and yellow spots appear on the leaves, later it spreads to the veins of the leaves due to which the leaves turn yellow and fall down.
Control: To prevent this disease, avoid giving excess water to the gourd plant. Avoid wetting the leaves when watering the plant. And when symptoms appear, spray Jatayu (Chlorothalonil 75% WP) @ 200 grams per acre or Novaxyl (Metalaxyl 8% + Mancozeb 64% WP) @ 800 – 1000 grams per acre mixed with 150 to 200 litres of water.
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