Soybean Anthracnose/pod blight: Colletotrichum truncatum
Symptom:
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Infected seeds become shrivelled, mouldy and brown.
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Symptoms on cotyledons appear as dark brown sunken cankers.
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In the early stage, irregular brown lesions appear on leaves, stems and pods.
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In advanced stages, the infected tissues are covered with black fruiting bodies of the fungus.
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Under high humidity, symptoms on leaves are veinal necrosis, leaf rolling, cankers on petioles premature defoliation
Management:
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Use healthy or certified seeds.
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Rotate soybean with cereals.
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Do not cultivate when the foliage is wet.
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Completely remove plant residue by clean ploughing the field soon after harvest.
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Destroy last years infected stubble.
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Maintain well-drained field.
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Seed treatment with Thiram or Captan or Carbendazim 3 g/kg and
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Use Mancozeb @ 2.5g/l as spray or Carbendazim 1g/L.
Source-
- TamilNadu Agritech Portal
