Kumar, N. and Mathpal, B. and Sharma, A. and Shukla, A. and Shankhdhar, D. and Shankhdhar, S.C. (2015) Physiological evaluation of nitrogen use efficiency and yield attributes in rice (Oryza sativa L.) genotypes under different nitrogen levels. Cereal Research Communications, 43 (1). pp. 166-177. ISSN 0133-3720
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Abstract
Nitrogen use efficiency, more specifically physiological nitrogen use efficiency depends primarily on management of N, one of the major essential nutrients. It is required in increased agricultural production and may possibly cause soil toxicity if fed in excess. Rate of N fertilizer application in fertile agricultural field and improved productivity in sterile soils require the improvement of NUE. A field experiment was therefore conducted to evaluate the effect of different N levels (N<sub>0</sub>, N<sub>50</sub>, N<sub>100</sub> and N<sub>200</sub>) on rice genotypes. Vegetative plant growth was found to be reduced under N<sub>0</sub> while improved at N<sub>200</sub> level. Among the genotypes, highest PNUE (34.94) and correspondingly higher yield (7.15 ton ha<sup>−1</sup>) was observed for Krishna Hamsa. The other traits viz. plant height, no. of productive tillers and LAI exhibited higher values for Krishna Hamsa as well. Hence these can be utilized as physiological markers for the selection of rice genotypes efficient in N use.
| Item Type: | Article |
|---|---|
| Subjects: | S Agriculture / mezőgazdaság > S1 Agriculture (General) / mezőgazdaság általában |
| Depositing User: | Ágnes Sallai |
| Date Deposited: | 04 Jul 2016 07:57 |
| Last Modified: | 04 Apr 2023 11:29 |
| URI: | http://real.mtak.hu/id/eprint/37138 |
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