Black Gram Rust: Uromyces phaseoli
Symptom:
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Spots produced are small, numerous in number with the pale brown centre and reddish brown margin. Similar spots also occur on branches and pods.
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Under favourable environmental conditions, severe leaf spotting and defoliation occurs at the time of flowering and pod formation.
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The fungus is seed-borne and also survives on plant debris in the soil.
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High humidity favours disease development.
Management:
- Spray Mancozeb 1000g or wettable sulphur 1500g /ha at initiation of the disease and 10 days later.
Source-
- TamilNadu Agritech Portal
