About Lesson
External seed born disease not soil born
- Survive: infected seed as a primary inoculum infected plant parts, survives on collateral hosts like Digitaria sanguinalis(banso), Leersia hexandra, Echinochloa colonum(sama), Pennisetum typhoides(pearl millet), Setaria italic(foxtail millet) and Cynodon dactylon(dubo).
- Spread : air current
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