Black Gram Bacterial Leaf Blight: Xanthomonas phaseoli
Symptom:
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The fungus attacks all aerial part parts and at any stage of plant growth.
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Symptoms are circular, black, sunken spots with a dark center and bright red-orange margins on leaves and pods.
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In severe infections, the affected parts wither off.
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Seedlings get blighted due to infection soon after seed germination.
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The pathogen survives on seed and plant debris
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The disease spreads in the field through air-borne conidia.
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The disease is more severe in cool and wet seasons.
Management:
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Use disease free seed
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Destruction of debris and stubbles.
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Soak the seeds in 500 ppm Streptocycline solution for 30 min. before sowing followed by two sprays of Streptocycline combined with 3 g of Copper Oxychloride per litre at an interval of 12 days is recommended.
Source-
- TamilNadu Agritech Portal
