Recent approaches in nitrogen management for sustainable agricultural production and eco-safety

Jat, R A and Wani, S P and Sahrawat, K L and Singh, P and Dhaka, S R and Dhaka, B L (2012) Recent approaches in nitrogen management for sustainable agricultural production and eco-safety. Archives of Agronomy and Soil Science, 58 (9). pp. 1033-1060. ISSN 1476-3567

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Among plant nutrients, nitrogen (N) is the most important. Its importance as a growth- and yield-determining nutrient has led to large and rapid increases in N application rates, but often with poor use efficiency. Nitrogen management requires special attention in its use so that the large losses can be minimized and the efficiency maximized. Site-specific nutrient management (SSNM) has been found especially useful to achieve the goals of improved productivity and higher N use efficiency (NUE). Leaf color charts and chlorophyll meters assist in the prediction of crop N needs for rice and wheat, leading to greater N-fertilizer efficiency at various yield levels. Crop simulation models can be used in combination with field information and actual weather data to make recommendations to achieve higher NUE. Remote sensing tools are also used to predict crop N demands precisely. At the same time, traditional techniques like balanced fertilization, integrated N management (INM), use of nitrification inhibitors and slow-release nitrogenous fertilizers (SRNF), split application and nutrient budgeting, among others, are also used to supplement recent N management techniques to attain higher productivity and NUE, and reduce environmental pollution through the leakage of fertilizer N.

Item Type: Article
Uncontrolled Keywords: controlled-release N fertilizers, eco-safety, nitrogen, nitrogen use efficiency, sustainability
Subjects: Others > Soil Science
Depositing User: Mr T L Gautham
Date Deposited: 03 Nov 2011 08:43
Last Modified: 20 Feb 2013 03:17
Official URL:
Acknowledgement: UNSPECIFIED
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