Evaluation of excess water tolerant rice varieties Swarna sub-1 and CR-1009 sub -1 under Head to Head Project in East and South- Eastern Coastal Plain zone of Odisha

S. R. Dash¹, B.K. Routray², S. K. Mohanty³, N. Behera⁴

¹Krishi Vigyan Kendra, Malkangiri, OUAT, Odisha, Bhubaneswar

²Plant protection, Krishi Vigyan Kendra, Jagtsinghpur, OUAT, Odisha, Bhubaneswar

³Krishi Vigyan Kendra, Puri, OUAT, Odisha, Bhubaneswar

⁴Agronomy, Krishi Vigyan Kendra, Malkangiri.OUAT, Odisha, Bhubaneswar

Corresponding Author Email: samirdash2007@rediffmail.com

DOI : http://dx.doi.org/10.12944/CARJ.8.1.07

Abstract:

Flash flood or submergence is a common phenomenon in rice growing rainfed lowland areas that seriously affects crop establishment leading to severe yield losses. A few submergence–tolerant rice varieties have been developed by introgression SUB -1 gene into mega rice varieties of South Asia. Performance of this variety can be further enhanced through adoption of appropriate management practices. Farners Participatorty trials were conducted using Swarna- sub-1 and CR 1009 sub-1 during kharif, 2017 in three adopted villages at Erasama, Kujanga and Raghunathapur blocks of Jagatsinghpur district. Results of this experiment revealed that at recommended doses of N:P:K @ 80-40-40 Kgha^-1, transplanting of 30 days aged seedlings and additional N-dose of 20kg/ha at 7 days after receding of flood water resulted in better post submergence recovery and maximum yield. Maximum number of tillers m^-2 was recorded in CR 1009 sub -1 followed by Pooja and Swana Sub -1. Rice variety Swarna Sub –I rerecorded an yield of 55.23 q ha ^-1 which was 14.5% higher as compared to farmers variety Swrana 48.2 q ha ^-1. The Swarna Sub-1 and CR 1009 sub-1 survived in the flood and gave higher yield under submergence condition in the coastal flood prone area

Keywords:

Stress Tolerance Rice; Nursery Management; Post Flood Management; Submergence; Survival

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