Abstract : This paper presents the results of a study undertaken to assess the yield potential and submergence tolerance of rice cv. Swarna Sub-1 in the coastal plain zone of Jagtsinghpur district (Odisha, India) in compression with farmers practices. The demonstrations were carried out during the kharif season in 2015 and 2016 under the BGREI (Bringing Green Revolution in Eastern India) programme in the district covering all the blocks. The study was carried out in three locations, i.e KVK instructional farm and two blocks, i.e Tirtol and Kujanga, which were selected purposefully as most of the areas are prone to submergence in kharif from September to October. Simultaneously, two villages, Kosti Mallikapur and Amberi of Tirtol and Boriki of Kujanga block, were selected randomly. On average, Swarna Sub-1 yielded ∼0.6 t/ha higher than the parent Swarna in Boriki. Under complete submergence of 10 to 15 days of a 70-day old crop, Swarna Sub-1 yielded on an average 5.5 t/ ha compared to 4.6 t/ha of Swarna, giving an advantage of 0.9 t/ha. Eastern India alone has 12.9 m ha of rainfed lowland rice area and a substantial part of this is submergence-prone, resulting in low and unstable yields. It is hoped that Swarna-Sub-1 will cover most of this under-utilized and riskprone area and make it most productive, thereby, improving the livelihood of the poor farmers in this region. The spread of submergence-tolerant rice varieties such as Swarna Sub-1 in these areas will substantially increase rice production in the country thereby benefiting thousands of the poor farmers inhabiting these rainfed lowlands areas.
|Journal||Trends in Biosciences|