Sunflower wilt or rot

Sunflower wilt or rot: Sclerotium rolfsii

Symptom:
  • Initial symptoms of the disease are noticed 40 days after sowing. The sickly appearance of plants can be noticed from a distance and a row effect can be observed in the heavily infested soil. Later the entire plant withers and dies.
  • White cottony mycelium and mustard-seed-type sclerotial bodies are conspicuous on the affected stem near soil level.
Management:
  • Collection and destruction of plant debris.
  • Seed treatment with Captan or Carboxin 3g/kg and drenching the base of the plant with Carbendazim 1g/lit.

 

Source-

  • TamilNadu Agritech Portal
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