Management of viral diseases in Bitter Gourd

  • In Bitter Gourd, viral diseases are caused by white flies and aphids.
  • In this disease, irregular, light and dark green and yellow stripes or spots appear on the leaves.
  • The leaves then turn, block, shrink and the veins of the leaves become dark green or light yellow.
  • The plant remains small and the fruits seem to be full or fall off.
  • White fly and aphid should be controlled to prevent this disease.
  • Spraying of acetamiprid 20% SP @ 40g / acre and streptomycin 20g in 200 liters of water at an interval of 10-15 days to protect such insects. Or
  • Spray spraying with Streptomycin 20 g + Diafenthiuron 50 WP 300 gm per acre in 200-250 liter water.
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Prevention of bitter gourd from sucking pests 

Sucking pests such as aphid, jassid, whitefly, mealybug can seriously damage the Bitter Gourd crop.

  • Use Imidacloprid 17.8 SL 5 ml per 15 litres of water to protect against sucking pests or
  • Spray Thiamethoxam 25 WG 5 g per 15 litres of water
  • Insecticides should be sprayed in turn so that the insects do not produce resistance against insecticides.
  • Use Bavaria Basiana 1 kg per acre through the organic medium. Or you can use it along with the above-mentioned pesticides.
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How to save the Bitter Gourd crop from Anthracnose disease

  • It’s a very harmful disease of Bitter gourd.
  • Initially irregular yellow or brown spots start appearing on the leaves.
  • In the next stages, these spots become darker and spread on the entire leaves.
  • Small dark spots are produced on the fruit which then spread on the whole fruit.
  • Pink spores are formed between these spots in wet weather.
  • Due to this, the process of photosynthesis is interrupted and the plant growth stops completely.
  • To prevent this disease, treat the seeds at the rate of Carboxin 37.5 + Thiram 37.5 @ 2.5 g / kg seed.
  • Spray Mancozeb 75% WP 400 gram/acre or chlorothalonil 75% WP 300 gram/acre at 10 days intervals.
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Management of Powdery mildew disease in bitter gourd

  • First of all, white-grey spots start appearing on the upper part of the leaves which later grow into white coloured powder.
  • This fungus draws nutrients from the plants and hinders photosynthesis, which stops the plant’s growth.
  • With the growth of the disease, the infected part dries up and the leaves fall off.
  • Hexaconazole 5% SC 400 ml or Thiophanate methyl 70 WP 200 ml or Azoxystrobin 23 SC with 200 to 250 litres of water for an interval of fifteen days.
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Advantages of Staking and trellising in Bitter gourd

  • Bitter gourd grows very fast and vines elongate rapidly within two weeks after planting.
  • Staking and trellising will increase fruit yield, size, reduce fruit’s rotting.
  • This makes the process of harvesting and spraying of pesticides easier.
  • The trellis should be 1.2-1.8 meter high constructed from stacks 1.2 -1.8 meter apart.
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