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dc.contributor.authorMorell Soler, Francisco Joaquín
dc.contributor.authorWhitmore, A. P.
dc.contributor.authorÁlvaro-Fuentes, Jorge
dc.contributor.authorLampurlanés Castel, Jorge
dc.contributor.authorCantero-Martínez, Carlos
dc.date.accessioned2016-09-21T11:56:17Z
dc.date.issued2012
dc.identifier.issn0032-079X
dc.identifier.urihttp://hdl.handle.net/10459.1/57827
dc.description.abstractAims Root respiration is a major contributor to soil CO2 flux, and its response to management practices needs to be evaluated. The aim was to determine the effect of management practices (tillage systems and nitrogen fertilization levels) on root respiration and to develop a model able to simulate root respiration and its components. Methods The study was carried out during two contrasting growing seasons (2007–2008 and 2008– 2009). Root respiration, including root tissue respiration (Rts) and rhizomicrobial respiration of exudates (Rrz), was estimated as the difference between the soil CO2 flux of cropped and bare soil (the so-called root exclusion technique). Additionally a novel sub-model of Rts, was used to simulate root respiration based on root growth and specific root respiration rates. Results Root respiration was reduced under notillage. The model agreed well with the patterns and the amounts of the observed values of root respiration, although prior calibration was needed. Conclusions Root respiration was reduced by the long-term adoption of no-tillage, but was increased by N fertilizer. The root exclusion technique and the model were useful means to estimate root respiration on cropland under semiarid Mediterranean conditions. Additionally the model successfully separated out the theoretical contributions of Rts and Rrz to root respiration.ca_ES
dc.description.sponsorshipThis work was supported with by the Comision Interministerial de Ciencia y Tecnologia of Spain (Grants AGL 2004-07763-C02-02 and AGL2007-66320- CO2-02/AGR).ca_ES
dc.language.isoengca_ES
dc.publisherSpringer Verlagca_ES
dc.relationMIECI/PN2004-2007/AGL2004-07763-C02-02ca_ES
dc.relationMIECI/PN2004-2007/AGL2007-66320-C02-02/AGRca_ES
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.1007/s11104-011-0938-0ca_ES
dc.relation.ispartofPlant and Soil, 2012, vol. 351, núm. 1, p. 135-147ca_ES
dc.rights(c) Springer Verlag, 2011ca_ES
dc.subjectRoot respirationca_ES
dc.subjectTillageca_ES
dc.subjectNitrogen fertilizationca_ES
dc.subjectDrylandca_ES
dc.subjectBarleyca_ES
dc.subject.otherOrdica_ES
dc.titleRoot respiration of barley in a semiarid Mediterranean agroecosystem: field and modelling approachesca_ES
dc.typearticleca_ES
dc.identifier.idgrec017310
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/10.1007/s11104-011-0938-0
dc.date.embargoEndDate2025-01-01


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