Downy mildew control in muskmelon

Downy mildew control in muskmelon:- Water soaked lesions appear on undersurface of leaf lamina. Angular spots appear on upper surface similar to water-soaked lesions….

  • Water soaked lesions appear on undersurface of leaf lamina.
  • Angular spots appear on upper surface similar to water-soaked lesions.
  • Lesions appear first on the older leaves and progressively on the younger leaves.
  • As the lesions expand, they may remain yellow or become dry and brown.
  • Affected vines do not set fruit properly.
  • Plucking and destroy of affected leaves.
  • Spray with Mancozeb 75% WP @ 350-400 gm/acre or Chlorothalonil 75% WP @ 200-250 gm/ acre.
  • Crop rotation and sanitation reduces the severity of the disease.

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Downy mildew control in watermelon

Downy mildew control in watermelon:- Water soaked lesions appear on undersurface of leaf lamina. Angular spots appear on upper surface similar to water-soaked lesions.

  • Water soaked lesions appear on undersurface of leaf lamina.
  • Angular spots appear on upper surface similar to water-soaked lesions.
  • Lesions appear first on the older leaves and progressively on the younger leaves.
  • As the lesions expand, they may remain yellow or become dry and brown.
  • Affected vines do not set fruit properly.
  • Plucking and destroy of affected leaves.
  • Spray with Mancozeb 75% WP @ 350-400 gm/acre or Chlorothalonil 75% WP @ 200-250 gm/ acre.
  • Crop rotation and sanitation reduces the severity of the disease.

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Control of downy mildew in Snake gourd

Control of downy mildew in Snake gourd:- During wet season, corresponding lower surface is covered with faint purplish fungal growth. The entire leaf dries up quickly.

  • During wet season, corresponding lower surface is covered with faint purplish fungal growth.
  • The entire leaf dries up quickly.
  • 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 Mancozeb 75% WP @ 350-400 gm/acre or Chlorothalonil 75% WP @ 200-250 gm/ acre.

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Management of Downy Mildew in Onions

Management of Downy Mildew in Onions:- Violet colour fungus on the surface of leaves or flower stalk, which later becomes pale greenish yellow colour. Finally, the leaves or seed stalks collapses.

Management of Downy Mildew in Onions:-

Symptoms:-

  • Violet colour fungus on the surface of leaves or flower stalk, which later becomes pale greenish yellow colour.
  • Finally, the leaves or seed stalks collapses.
  • The disease is worst in damp condition, late planting and application of higher doses of fertilizer and numerous irrigation.

Control

  • Onion bulb used for seed crop should be exposed to sunlight for 12 days to destroy the fungus.
  • Spray with Mancozeb + Metalxyl or Carbendazim + Mancozeb @ 400 Gm/Acre at fort night interval.

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Control Of Downy Mildew in Cauliflower

Control Of Downy Mildew in Cauliflower:- The stem shows dark brown, depressed lesions which later develop downy growth of the fungus.
On leaves, purplish-brown spots appear on the under surface followed by appearance of downy growth on such lesions.

Control Of Downy Mildew in Cauliflower:-

  • The stem shows dark brown, depressed lesions which later develop downy growth of the fungus.
  • On leaves, purplish-brown spots appear on the under surface followed by appearance of downy growth on such lesions.
  • It causes damage to curd, producing curd-rot.

Control:-

  • Give hot water treatment to seed at 50°C for 30 min with Thiram(0.3%).
  • Remove the diseased portions of the curd and apply copper oxychloride 50% WP @ 3 Gm/ litre to the cut surface.
  • Spray the crop with Mancozeb 75% WP@ 400 Gm/Acre at 10-15 days intervals, first spray be given on the appearance of symptoms.
  • Follow crop rotation and sanitation practices.

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