Evaluation of the impact of changing from rainfed to irrigated agriculture in a mediterranean watershed in Spain

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dc.contributor.authorOduor, Brian Omondi
dc.contributor.authorCampo-Bescós, Miguel
dc.contributor.authorLana Renault, Noemí
dc.contributor.authorAlfaro Echarri, Alberto
dc.contributor.authorCasalí Sarasíbar, Javier
dc.contributor.departmentIngenieríaes_ES
dc.contributor.departmentIngeniaritzaeu
dc.contributor.departmentInstitute on Innovation and Sustainable Development in Food Chain - ISFOODen
dc.date.accessioned2023-05-02T18:13:23Z
dc.date.available2023-05-02T18:13:23Z
dc.date.issued2023
dc.date.updated2023-05-02T18:04:58Z
dc.description.abstractThe conversion of cultivated areas from rainfed to irrigated agriculture alters the watershed’s hydrology and could affect the water quality and quantity. This study examined how streamflow, nitrate load, and nitrate concentration changed after irrigation implementation in a Mediterranean watershed in Navarre, Spain. The Soil Water Assessment Tool (SWAT) model was applied in the Cidacos River watershed to simulate streamflow and nitrate load under rainfed conditions. The simulated outputs were then compared with the post-irrigation observed values from mid-2017 to 2020 at the watershed outlet in Traibuenas to determine the irrigation impact. The model calibration (2000–2010) and validation (2011–2020) results for streamflow (NSE = 0.82/0.83) and nitrate load (NSE = 0.71/0.68) were satisfactory, indicating the model’s suitability for use in the watershed. A comparison of the rainfed and post-irrigation periods showed an average annual increase in streamflow (952.33 m3 ha−1, +18.8%), nitrate load (68.17 kg ha−1, +62.3%), and nitrate concentration (0.89 mg L−1 ha−1, +79%) at the watershed outlet. Irrigation also caused seasonal changes by altering the cropping cycle and increasing the streamflow and nitrate export during the summer and autumn when irrigation was at its peak. The increases in the post-irrigation period were attributed to the added irrigation water for streamflow and increased nitrogen fertilizer application due to changes in cropping for nitrate concentration and export. These findings are useful to farmers and managers in deciding the best nitrate pollution control and management measures to implement. Furthermore, these results could guide future development and expansion of irrigated lands to improve agricultural sustainability.en
dc.description.sponsorshipThis study was supported by funding from the European Union’s H2020 research and innovation program under Marie Sklodowska-Curie grant agreement no. 801586, and from the Ministerio de Economía y Competitividad (Government of Spain) via Research Project CGL2015-64284-C2-1-R and PID2020-112908RB-I00 funded by MCIN/AEI/10.13039/501100011033/FEDER “Una manera de hacer Europa”.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationOduor, B. O., Campo-Bescós, M. Á., Lana-Renault, N., Echarri, A. A., & Casalí, J. (2023). Evaluation of the impact of changing from rainfed to irrigated agriculture in a mediterranean watershed in spain. Agriculture, 13(1), 106. https://doi.org/10.3390/agriculture13010106en
dc.identifier.doi10.3390/agriculture13010106
dc.identifier.issn2077-0472
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/45209
dc.language.isoengen
dc.publisherMDPIen
dc.relation.ispartofAgriculture 2023, 13(1), 106en
dc.relation.projectIDinfo:eu-repo/grantAgreement/European Commission/Horizon 2020 Framework Programme/801586/
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO//CGL2015-64284-C2-1-R/ES/
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112908RB-I00/ES/
dc.relation.publisherversionhttps://doi.org/10.3390/agriculture13010106
dc.rights© 2023 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.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectIrrigationen
dc.subjectNitrate concentrationen
dc.subjectNitrate loaden
dc.subjectRainfed cultivationen
dc.subjectStreamflowen
dc.subjectSWAT modelen
dc.titleEvaluation of the impact of changing from rainfed to irrigated agriculture in a mediterranean watershed in Spainen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublicatione9ca0d9f-24bc-4ce1-871f-81ce4e86b5bd
relation.isAuthorOfPublicatione3cfccd0-e410-4e7e-a9f6-c3825f946a14
relation.isAuthorOfPublication.latestForDiscoverye9ca0d9f-24bc-4ce1-871f-81ce4e86b5bd

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