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dc.contributor.authorYagüe Carrasco, María Rosa
dc.contributor.authorBosch Serra, Àngela D.
dc.contributor.authorBoixadera Llobet, Jaume
dc.date.accessioned2014-07-25T07:07:45Z
dc.date.available2014-07-25T07:07:45Z
dc.date.issued2012
dc.identifier.issn1537-5110
dc.identifier.urihttp://hdl.handle.net/10459.1/47437
dc.description.abstractPig slurries (PS) are widely applied to soil as fertilisers. Compositional variability, as shown in this study, is the main constraint on their efficient use. Slurry samples, collected from 126 commercial pig farms were analysed and organic nitrogen (ON), ammoniacal nitrogen (AN), total nitrogen (TN), total potassium (TK), total phosphorus (TP) content, pH, EC (electrical conductivity), DM (dry matter) and OM (organic matter) quantified. Relationships between major nutrient contents of PS and its physical and chemical properties were analysed. AN and TK were linearly related to EC (p < 0.0001) for values lower than 5.6 kg [AN] m−3 and 5 kg [TK] m−3 with coefficients of determination (R2) of 0.86 and 0.58 respectively, in agreement with previous linear models. At higher AN values (which means EC > 40 dS m−1) linearity cannot be maintained, which has important consequences for direct slurry EC measurements. ON and TP in slurries were closely related (p < 0.0001) to DM with R2 of 0.90 and 0.68 respectively.ca_ES
dc.language.isoengca_ES
dc.publisherElsevierca_ES
dc.relation.isformatofVersió postprint del document publicat a https://doi.org/10.1016/j.biosystemseng.2011.11.013ca_ES
dc.relation.ispartofBiosystems Engineering, 2012, vol. 111, núm. 2, p. 206-216ca_ES
dc.rights(c) Elsevier, 2012ca_ES
dc.subjectCompositional-variabilityca_ES
dc.subjectFertilitzer-valueca_ES
dc.subjectNutrientsca_ES
dc.subjectPhysicochemical modelsca_ES
dc.subjectPig slurryca_ES
dc.subject.otherPurinsca_ES
dc.subject.otherAdobs orgànics -- Sòls -- Qualitatca_ES
dc.titleMeasurement and estimation of the fertiliser value of pig slurry by physicochemical models: usefulness and constraintsca_ES
dc.typearticleca_ES
dc.identifier.idgrec017553
dc.type.versionacceptedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.identifier.doihttps://doi.org/10.1016/j.biosystemseng.2011.11.013


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