Soil quality assessment after 25 years of sewage sludge vs. mineral fertilization in a calcareous soil

Simoes da Mota, Ana Claudia; Poch, Rosa María; Enrique Martín, Alberto; Orcaray Echeverría, Luis; Virto Quecedo, Íñigo

Publication:
Soil quality assessment after 25 years of sewage sludge vs. mineral fertilization in a calcareous soil

dc.contributor.author	Simoes da Mota, Ana Claudia
dc.contributor.author	Poch, Rosa María	es_ES
dc.contributor.author	Enrique Martín, Alberto
dc.contributor.author	Orcaray Echeverría, Luis
dc.contributor.author	Virto Quecedo, Íñigo
dc.contributor.department	Institute on Innovation and Sustainable Development in Food Chain - ISFOOD	en
dc.date.accessioned	2022-01-18T09:18:39Z
dc.date.available	2022-01-18T09:18:39Z
dc.date.issued	2021
dc.description.abstract	The aim of this work was to identify the most sensitive soil quality indicators and assess soil quality after long-term application of sewage sludge (SS) and conventional mineral fertilization for rainfed cereal production in a sub-humid Mediterranean calcareous soil. The treatments included six combinations of SS at different doses (40 t ha−1 and 80 ha−1) and frequencies (every 1, 2 and 4 years), plus a control with mineral fertilization, and a baseline control without fertilization. Twenty-five years after the onset of the experiment, 37 pre-selected physical, chemical and biological soil parameters were measured, and a minimum data set was determined. Among these indicators, those significantly affected by treatment and depth were selected as sensitive. A principal component analysis (PCA) was then performed for each studied depth. At 0–15 cm, PCA identified three factors (F1, F2 and F3), and at 15–30 cm, two factors (F4 and F5) that explained 71.5% and 67.4% of the variation, respectively, in the soil parameters. The most sensitive indicators (those with the highest correlation within each factor) were related to nutrients (P and N), organic matter, and trace metals (F1 and F4), microporosity (F2), earthworm activity (F3), and exchangeable cations (F5). Only F3 correlated significantly (and negatively) with yield. From these results, we concluded that soil quality can be affected in opposite directions by SS application, and that a holistic approach is needed to better assess soil functioning under SS fertilization in this type of agrosystem.	en
dc.description.sponsorship	This project has received funding from the National Institute for Agricultural and Food Research and Technology (INIA) through the RTA2017-00088-C03-01 project and from the European Union’s H2020 research and innovation programme under Marie Sklodowska-Curie grant agreement No. 801586.	en
dc.format.extent	20 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.3390/land10070727
dc.identifier.issn	2073-445X
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/41837
dc.language.iso	eng	en
dc.publisher	MDPI	en
dc.relation.ispartof	Land 2021, 10, 727	en
dc.relation.projectID	info:eu-repo/grantAgreement/European Commission/Horizon 2020 Framework Programme/801586	en
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RTA2017-00088-C03-01	en
dc.relation.publisherversion	http://doi.org/10.3390/land10070727
dc.rights	© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess	en
dc.rights.accessRights	Acceso abierto / Sarbide irekia	es
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/
dc.subject	Long-term effect	en
dc.subject	Mediterranean soils	en
dc.subject	Sewage sludge	en
dc.subject	Soil quality assessment	en
dc.title	Soil quality assessment after 25 years of sewage sludge vs. mineral fertilization in a calcareous soil	en
dc.type	info:eu-repo/semantics/article	en
dc.type	Artículo / Artikulua	es
dc.type.version	info:eu-repo/semantics/publishedVersion	en
dc.type.version	Versión publicada / Argitaratu den bertsioa	es
dspace.entity.type	Publication
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