Regional Research Station Gerua, Assam (RRLRRS)
The flood is an annual disaster and about 2 m ha of rice-land plunge into flood annually to varying depths in Assam. The Productivity of rice under rainfed lowland to deepwater conditions is only around 1 t/ha in spite of excellent soil and climatic conditions in Assam. Rice is not only the staple food, but also it is a hub of other species that support the environment and employment opportunity to many others. Considering the flooding events, Govt. of Assam had requested the Central Government to establish a rice research station at Assam to work for the development of rainfed lowland and flood prone rice. As a result, RRLRRS, Gerua was established in 1997 as a Regional station of Central Rice Research Institute under Indian Council of Agricultural Research, New Delhi to work on the rice development in Eastern India including Assam.
Collection, evaluation, conservation and exchange of rice germplasm.
Development of suitable high yielding varieties with tolerance to cold during early stage of the crop to replace the existing local varieties in Boro season.
- Catering to the research needs and requirements of flood prone lowland areas of Assam, which are invariably affected by flash flood.
- Generation of appropriate rice production and protection packages for Ahu, Sali, Bao and Boro rice of Assam
Characterization of hydrology and prioritization of farming options of rice ecosystems for the region.
Thrust Area of Research:
- Strengthening the breeding strategy to evolove suitable Sali varieties with tolerance to flood.
- Development of short duration varieties with blast resistance and cold tolerance for Boro season.
- Evolution of HYV as preflood Ahu and post flood Sali sitations.
- Development of flood resistant rice varieties for lowland, semi deep and deepwater conditions.
- Development of appropriate integrated insect pest and disease management strategies.
- Development of strategies to avoid crop submergence through suitable cultural practices for both intermediate and semi deep conditions.
Present and Future Work at RRLRRS:
- Released rice variety Chandrama as Boro and Sali for Assam.
- Rice strains viz. Pratikshya, Raimukhi, CR898, Tapaswani, LPR 119, Anjali, Nilagiri, Vandana on pipeline
- Production technology for Rice rice-rice cropping sequences for irrigated lowlands standardized.
- Rice Fish-Horticulture farming system revalidated for rainfed lowland of Assam
- Continual maintenance of Over 2000 Eastern Indian Rice germplasm
- Bio control agents like T. harzianum, T.viride, gives good control of leaf blast, Sheath blight and BLB.
- Survey revealed that Leaf blast is the major disease in Boro & Ahu while BLB, Sheath blight, Sheath rot & Blast occur in Sali season. Developed 2500 breeding lines from 37 crosses for flood prone rice improvement.