Indian Journal of Agricultural Research

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Research Article

Indian Journal of Agricultural Research, volume 54 issue 4 (august 2020) : 521-525

Response of Rice Cultivars to Nitrogen Levels under Aerobic and Transplanted Conditions

V. Ramulu, M.D. Reddy, M. Umadevi, Y. Sudharani
1Water Technology Centre, Prof. Jayashankar Telangana State Agricultural University, Rajendranagar-500 030, Hyderabad, India.
Cite article:- Ramulu V., Reddy M.D., Umadevi M., Sudharani Y. (2020). Response of Rice Cultivars to Nitrogen Levels under Aerobic and Transplanted Conditions. Indian Journal of Agricultural Research. 54(4): 521-525. doi: 10.18805/IJARe.A-5394.

ABSTRACT

An experiment on response of rice to nitrogen under aerobic and transplanted conditions was conducted in split-split -plot design with two methods of rice cultivation, seven rice varieties and five nitrogen levels. The grain yield was significantly higher in transplanted rice compared to aerobic rice. Significantly higher grain yield was observed with MTU 1001 and MTU 1010 as compared to IR 64, Tella hamsa and Rajendra and the grain yield in the former two varieities was comaparable with Naveen and Erramallelu.  Increase in grain yield with every 100 kg of N ha-1 from 100 kg to 300 kg ha-1 was significant. Significant interaction effect on grain yield was observed due to method of crop establishment, varieties and nitrogen levels. Aerobic rice received 627 mm of irrigation water as compared to 1228 mm in transplanted rice and the mean water productivity was higher under aerobic rice (0.49 kg grain m-3) as compared to  transplanted rice (0.31 kg grain m-3).

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