Cercospora leaf blight, leaf spot and Purple seed stain: Cercospora kikuchii
Symptom:
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Infected leaves appear leathery, dark, reddish purple.
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Severe infection causes rapid chlorosis and necrosis of leaf tissues, resulting in defoliation.
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Lesions on petioles and stems are slightly sunken, reddish purple; severe cause defoliation.
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Later, blighting of young, upper leaves over large areas, even entire fields occur.
Management:
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Use healthy/certified seeds.
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Previous crop debris should be removed.
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Seed treatment with Thiram + Carbendazium (2:1) @ 3g/kg seed.
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Use Mancozeb or copper oxychloride at 2.5g/l or Carbendazim 1 g/lit.
Source-
- TamilNadu Agritech Portal
