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