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dc.contributor.authorBosch Serra, Àngela D.
dc.contributor.authorYagüe Carrasco, María Rosa
dc.contributor.authorPoch, Rosa M.
dc.contributor.authorMolner, M.
dc.contributor.authorJunyent, B.
dc.contributor.authorBoixadera Llobet, Jaume
dc.date.accessioned2017-07-20T11:09:23Z
dc.date.available2018-04-30T22:17:20Z
dc.date.issued2017-07-13
dc.identifier.issn1351-0754
dc.identifier.urihttp://hdl.handle.net/10459.1/60147
dc.description.abstractEffects of applications of pig slurry on soil aggregate stability are not well understood in dryland agriculture. This research aims to (i) identify aggregate stability tests that give a reliable description of the soil's behaviour when pig slurry (PS) is applied to calcareous soil and (ii) interpret them in terms of chemical, biological, morphological and physical soil properties for soil quality assessments. Soil samples from eight fertilizer treatments (mineral fertilizers and PS), applied over seven growing seasons were analysed. We applied five methodologies to examine different mechanisms of aggregate breakdown. Porosity was characterized by image analyses. There was minimum resistance to the mechanical breakdown of aggregates when slurries were applied 12 months before analysis. Recent applications of slurry (3 months before the analysis) improved resistance to implosion caused by the penetration of water into dry aggregates (slaking), although the opposite result can occur if the method of evaluation is not chosen properly. Recent applications of PS also enhanced soil respiration and increased soil porosity in the 25-100 μm size range (packing pores between aggregates) and in the 100-400 μm size range (interaggregate or faunal pores). In dryland systems and in the winter cereal cropping season, the resistance of dry aggregates to slaking is improved temporarily if PS is applied at N rates equivalent to around 1.7 Mg OM ha-1 year-1.
dc.description.sponsorshipThe authors are grateful to the associate editor, to the editor-in-chief and the anonymous reviewers for their constructive comments that have considerably improved this paper. We also thank Íñigo Virto, Rafael Rodríguez, Montse Antúnez, Asier Santana, Joana Poch and Carmen Herrero. The support for field maintenance from the Department of griculture, Livestock, Fisheries and Food (Gene- ralitat de Catalunya, Catalonia, Spain) is fully acknowledged. This study was supported by the Ministry of Economy and Competitiveness and the National Institute for Agricultural and Food Scientific Research and Technology of Spain-INIA (projects REN01-1590, RTA04-114, RTA2010-126 and RTA2013-57-C5-05)
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherBritish Society of Soil Science
dc.relationMICINN/PN2008-2011/RTA2010-126
dc.relationMINECO/PN2013-2016/RTA2013-57-C05-05
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1111/ejss.12438
dc.relation.ispartofEuropean Journal of Soil Science, 2017, vol. 68, p. 449-461
dc.rights(c) British Society of Soil Science, 2017
dc.subjectSoil fertility
dc.titleAggregate strength in calcareous soil fertilized with pig slurries
dc.typeinfo:eu-repo/semantics/article
dc.date.updated2017-07-20T11:09:24Z
dc.identifier.idgrec025792
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.identifier.doihttps://doi.org/10.1111/ejss.12438


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