Bordoloi, Nirmali and Baruah, Kushal Kumar and Bhattacharyya, Pradip and Gupta, Prabhat Kumar (2019) Impact of nitrogen fertilization and tillage practices on nitrous oxide emission from a summer rice ecosystem. Archives of Agronomy and Soil Science, 65 (11). pp. 1493-1506. ISSN 0365-0340

PDF - Published Version Restricted to Registered users only Download (1991Kb) | Request a copy

Abstract

Identification of the combination of tillage and N fertilization practices that reduce agricultural Nitrous oxide (N2O) emissions while maintaining productivity is strongly required in the Indian subcontinent. This study investigated the effects of tillage in combination with different levels of nitrogen fertilizer on N2O emissions from a rice paddy for two consecutive seasons (2013-2014 and 2014-2015). The experiment consisted of two tillage practices, i.e., conventional (CT) and reduced tillage (RT), and four levels of nitrogen fertilizer, i.e., 0 kg N ha(-1) (F1), 45 kg N ha(-1) (F2), 60 kg N ha(-1) (F3) and 75 kg N ha(-1) (F4). Both tillage and fertilizer rate significantly affected cumulative N2O emissions (p < 0.05). Fertilizer at 45 and 60 kg N ha(-1) in RT resulted in higher N2O emissions over than did the CT. Compared with the recommended level of 60 kg N ha(-1), a 25% reduction in the fertilizer to 45 kg N ha(-1) in both CT and RT increased nitrogen use efficiency (NUE) and maintained grain yield, resulting in the lowest yield-scaled N2O-N emission. The application of 45 kg N ha(-1) reduced the cumulative emission by 6.08% and 6% in CT and RT practices, respectively, without compromising productivity.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Taylor & Francis
Subjects:	Agronomy > Plant and Soil Scienc Agronomy
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	19 Aug 2026 11:20
Last Modified:	19 Aug 2026 11:20
URI:	https://npl.csircentral.net/id/eprint/4240

Actions (login required)

View Item