Mode of spread and survival:
- The pathogen survives in soil and in the infected stubbles and on collateral hosts Leersia spp., Plantago najor, Paspalum dictum, and Cyanodon dactylon.
- The pathogen spreads through irrigation water and also through rain storms.
Management:
Cultural methods:
- Burn the stubbles
- Use optimum dose of fertilizers.
- Avoid clipping of tip of seedling at the time of transplanting.
- Avoid flooded conditions.
- Remove weed hosts periodically.
Chemical Methods:
- Seed treatment: Soaking of seeds in streptomycin sulphate 90% and tetracycline 10% SP @ 40 ppm for 12 hours or seedling root dipping @ 40 ppm for 30 minutes
.
- Foliar spray in the main field @ 100-150 ppm. Repeat the spray after 15 days, if required g/ac
Source of Information:
- AICRIP rice, TNAU, Coimbatore Rice diseases- online resource, IRRI, Phillippines.
Acknowledgements:
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