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Agricultural crops :: Oilseeds :: Safflower

Rust: Puccinia carthami

Symptom

  • Seeding infection causes twisting towards one side. Chestnut brown pustules are formed on hypocotyl leading to collapse of seeding.
  • On older plants girdling and hypertrophy of the stem base may occur.
  • Small, powdery chestnut brown pustules of 1-2 mm in size develop on leaf surface which later turn black.
  • Rust symptoms appear on leaves, flowers and fruits in the form of uredopustules which are brown in colour.
  • In seedling stage initially orange yellow spots appear, later turn to brown to black on cotyledons resulting in drooping and wilting of the seedlings.
Management
  • Avoid growing in low-lying areas and flooding under irrigation.
  • Remove and destroy the diseased plants.
  • Do not delay irrigation until the crop exhibits moisture stress symptoms.
  • Destruction of plant debris.
  • One or two sprays of Hexaconazole/propiconazole 1 ml/litre 0.05%) or mancozeb (0.25%) at 15 days interval.
  • Seed treatment with thiram or captan 3g/kg.

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