Assessment of stress tolerant rice (Oryza sativa L.) variety under rain fed condition of south east part of Bihar

Abstract

Drought stress significantly diminished its productivity and threated global food security. The front line demonstration was carried out during Kharif season of 2020-21 and 2021-22 in three villages of the Jamui district of South East part of Bihar. The present study was conducted to assess the performance of drought tolerant rice variety Swarn Shreya and Swarn Shakti as compared to local check Sahbhagi dhan. It was observed that the Rice variety Swarn Shreya recorded higher yield (36.45 q ha-1) compared to all other varieties Swarn Shakti (33.8 q ha-1) and Sahbhagi dhan (29.2 q ha-1). Overall performance of Rice variety Swarn Shreya was better in terms of plant height (101.5), no. of effective tillers m2 (268.6), spike length (21.5), no. of grains per spike (148.5), test weight (23.0) and produce 24.82% more grain yield as compared to local check Sahbhagi dhan. Highest economic return with B:C ratio (1.7) was also recorded with Swarn Shreya. So, drought tolerant rice variety Sahbhagi dhan can be replaced with Swarn Shreya in rainfed conditions of South East part of Bihar.