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Effect of tillage on short-term CO2 emissions from a loam soil in semiarid Aragon (NE Spain)

Authors: Álvaro-Fuentes, Jorge; López Sánchez, María Victoria; Gracia Ballarín, Ricardo; Arrúe Ugarte, José Luis;

Effect of tillage on short-term CO2 emissions from a loam soil in semiarid Aragon (NE Spain)

Abstract

[FR] "Effet du labour sur les émissions de CO2 à court terme provenant d’un sol de texture moyenne dans les zones semi-arides de l’Aragon (nord-est de l’Espagne)". L’adoption du labour de conservation dans les systèmes de culture sèche peut réduire les émissions de CO2 du sol dans l’atmosphère et, par conséquent, minimiser les pertes de carbone organique du sol et atténuer l’effet de serre. Dans la présente étude, nous évaluons l’influence des systèmes de labour conventionnel et de labour de conservation (labour réduit et non-labour) sur les flux de CO2 à court terme provenant d’un sol de texture moyenne en deux régimes de culture : continue et rotation céréalesjachère. L’étude menée faisait partie d’une expérience à long terme de labour de conservation mise en place en 1989 dans une zone semiaride du centre de l’Aragon (NE de l’Espagne). Pour les deux systèmes de culture, les flux de CO2 du sol mesurés immédiatement après les opérations de labourage étaient significativement supérieurs en labour conventionnel par rapport au labour réduit et au non-labour. Ces premiers résultats suggèrent que le labour de conservation pourrait être considéré comme une stratégie efficace pour réduire les émissions de CO2 provenant des sols agricoles dans les zones semiarides de l’Aragon.

[EN] Adoption of conservation tillage in rainfed agricultural systems can reduce soil CO2 emissions to the atmosphere thus minimizing soil organic carbon losses and mitigating the greenhouse effect. In this study we evaluate the influence of conventional and conservation tillage (reduced tillage and no-tillage) systems on short-term CO2 fluxes from a loam soil under both continuous cropping and cereal-fallow rotation. The study has been conducted as part of a long-term conservation tillage experiment established in 1989 in semiarid Central Aragón (NE Spain). CO2 emissions measured just after primary tillage operations were greater under continuous cropping than under cereal-fallow rotation. For both cropping systems, CO2 fluxes were significantly higher under conventional tillage than under reduced tillage and no-tillage. First results indicate that conservation tillage can reduce CO2 fluxes from semiarid soils in Aragón.

4 Pag., 1 Fig., 1 Tabl. Final Seminar of the Regional Action Programme on Rainfed Agriculture (RAP-RAG), Zaragoza (Spain), 2-3 June 2003. Additional info of resource: Mediterranean rainfed agriculture: Strategies for sustainability. Proceedings of the seminar, Cantero-Martínez, C.; Centro UdL-Institut per la Recerca i Tecnologia Agroalimentéries, Lleida (Spain). Dept. Producci¢n Vegetal y Ciencia Forestal)Gabiña, D. (eds..- Zaragoza (Spain): CIHEAM-IAMZ, 2004.- ISBN 2-85352-294-6.- p. 51-54

We would like to thank the Spanish Ministry of Science and Technology for financial support (Grant AGL2001-2238-CO2-01) and the FPI Fellowship awarded to the first author.

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Country
Spain
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Keywords

Labour de conservation, Conventional tillage, Flux de CO2 du sol, Soil organic carbon, Carbone organique du sol, Crop husbandry, Soil CO2 flux, Irrigation, Conservation tillage, Labour conventionnel, Dryland cropping, Systèmes de culture de zones semiarides

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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