Influence of Tillage and Liming on N2O emission from a rainfed crop

Garcia Marco, Sonia and Ábalos Rodríguez, Diego and Mariscal Sancho, Ignacio de Loyola and Espejo, R. and Vallejo Garcia, Antonio (2014). Influence of Tillage and Liming on N2O emission from a rainfed crop. In: "Proceedings of the 18th Nitrogen Workshop", 30/06/2014 - 03/07/2014, Lisboa. Portugal. ISBN 978-972-8669-56-0.

Description

Title: Influence of Tillage and Liming on N2O emission from a rainfed crop
Author/s:
  • Garcia Marco, Sonia
  • Ábalos Rodríguez, Diego
  • Mariscal Sancho, Ignacio de Loyola
  • Espejo, R.
  • Vallejo Garcia, Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: Proceedings of the 18th Nitrogen Workshop
Event Dates: 30/06/2014 - 03/07/2014
Event Location: Lisboa. Portugal
Title of Book: The nitrogen challenge: building a blueprint for nitrogen use efficiency and food security
Date: 2014
ISBN: 978-972-8669-56-0
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Química y Tecnología de Alimentos
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Nitrous oxide (N2O) is the main greenhouse gas (GHG) produced by agricultural soils due to microbial processes. The application of N fertilizers is associated with an increase of N2O losses. However, it is possible to mitigate these emissions by the introduction of adequate management practices (Snyder et al., 2009). Soil conservation practices (i.e.no tillage, NT) have recently become widespread because they promote several positive effects (increases in soil organic carbonand soil fertility, reduction of soil erosion, etc). In terms of GHG emissions, there is no consensus in the literature on the effects of tillage on N2O. Several studies found that NT can produce greater (Baggs et al., 2003), lower (Malhi et al., 2006) or similar (Grandey et al., 2006) N2O emissions compared to traditional tillage (TT). This large uncertainty is associated with the duration of tillage practices and climatic variability. Liming is widely use to solve problems of soil acidity (Al toxicity, yield penalties, etc). Several studies show a decrease in N2O emissions with liming (Barton et al., 2013) whereas no significant effects or increases were observed in others (Galbally et al., 2010). The aim of this work was to evaluate the effects of tillage (NT vs TT) and liming application or not of Ca-amendment) on N2O emissions from an acid soil during a rainfed crop.

More information

Item ID: 35169
DC Identifier: http://oa.upm.es/35169/
OAI Identifier: oai:oa.upm.es:35169
Deposited by: Memoria Investigacion
Deposited on: 09 Jun 2015 14:50
Last Modified: 09 Jun 2015 14:51
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