Control of Verticillium wilt in cotton

  • Level up after deep plowing (6-7 inches).
  • Use disease-free seed.
  • Follow 6-year crop rotations.
  • Grow resistant varieties.
  • Trichoderma viride @ 2 kg/acre mix it with 40-50 kg of FYM and apply at the time of sowing  
  • Seed treatment with Carboxin 37.%+ Thiram 37.5% @ 2 gm /kg or Trichoderma viride @ 5 gm/kg.
  • Trichoderma viride @ 1 kg + Pseudomonas fluorescens @ 1 kg make the solution in 200 liters of water and apply as root drenching.
  • Apply Mycorrhiza @ 4 kg/acre at 15 days after sowing.
  • Spraying Thiaphanate methyl 75% WP @ 300 gm/acre at before flowering.
  • Spraying Propiconazole 25% EC @ 125 ml/acre at pod formation stage.

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Verticillium wilt of cotton

 

  • Plants infected at early stages are severely stunted.
  • The first symptoms can be seen as bronzing of veins.
  • It is followed by interveinal chlorosis and yellowing of leaves.
  • Finally, the leaves begin to dry, giving a scorched appearance.
  • At this stage, the characteristic diagnostic feature is the drying of the leaf margins and areas between veins, which gives a “Tigerstripe” or “Tiger claw” appearance.

 

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