Meta-analysis of strategies to control nitrate leaching in irrigated agricultural systems and their effects on crop yield.

Quemada Saenz-Badillos, Miguel and Baranski, M. and Nobel-de Lange, M. N. J. and Vallejo Garcia, Antonio and Cooper, J. M. (2013). Meta-analysis of strategies to control nitrate leaching in irrigated agricultural systems and their effects on crop yield.. "Agriculture Ecosystems & Environment", v. 174 ; pp. 1-10. ISSN 0167-8809. https://doi.org/10.1016/j.agee.2013.04.018.

Description

Title: Meta-analysis of strategies to control nitrate leaching in irrigated agricultural systems and their effects on crop yield.
Author/s:
  • Quemada Saenz-Badillos, Miguel
  • Baranski, M.
  • Nobel-de Lange, M. N. J.
  • Vallejo Garcia, Antonio
  • Cooper, J. M.
Item Type: Article
Título de Revista/Publicación: Agriculture Ecosystems & Environment
Date: July 2013
ISSN: 0167-8809
Volume: 174
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Producción Vegetal: Fitotecnia [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Nitrate leaching (NL) is an important N loss process in irrigated agriculture that imposes a cost on the farmer and the environment. A meta-analysis of published experimental results from agricultural irrigated systems was conducted to identify those strategies that have proven effective at reducing NL and to quantify the scale of reduction that can be achieved. Forty-four scientific articles were identified which investigated four main strategies (water and fertilizer management, use of cover crops and fertilizer technology) creating a database with 279 observations on NL and 166 on crop yield. Management practices that adjust water application to crop needs reduced NL by a mean of 80% without a reduction in crop yield. Improved fertilizer management reduced NL by 40%, and the best relationship between yield and NL was obtained when applying the recommended fertilizer rate. Replacing a fallow with a non-legume cover crop reduced NL by 50% while using a legume did not have any effect on NL. Improved fertilizer technology also decreased NL but was the least effective of the selected strategies. The risk of nitrate leaching from irrigated systems is high, but optimum management practices may mitigate this risk and maintain crop yields while enhancing environmental sustainability.

More information

Item ID: 26317
DC Identifier: https://oa.upm.es/26317/
OAI Identifier: oai:oa.upm.es:26317
DOI: 10.1016/j.agee.2013.04.018
Official URL: http://www.sciencedirect.com/science/article/pii/S016788091300128X
Deposited by: Memoria Investigacion
Deposited on: 23 Jun 2014 13:15
Last Modified: 31 Jul 2015 22:56
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