Soybean Bacterial blight: Pseudomonas syringae pv. glycinea
Symptom:
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Seeds may develop raised or sunken lesions and become shrivelled and discoloured.
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Small, angular, translucent, water-soaked, yellow to light brown spots appear on leaves.
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Young leaves are most infected and are destroyed, stunted and chlorotic.
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Angular lesions enlarge and merge to produce large, irregular dead areas.
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Early defoliation of lower leaves may occur.
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Large, black lesions develop on stems and petioles.
Management:
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Deep summer ploughing.
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Use healthy/certified seeds.
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Destroy infected crop debris
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Seed treatment with streptocyclin @ 250 ppm (2.5 g/10 kg seeds).
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Application of any copper fungicides @ 2 g/lit along with streptocyclin at the rate of 250 ppm (2.5 g/10 lit water).
Source-
- TamilNadu Agritech Portal
