Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain

Climate change is affecting water resources in south-eastern Spain, and this mainly affects irrigated agriculture. In this context, seawater desalination is an adaptive strategy that has provided increasing water allotments to agriculture for the last decade, to replace decreasing conventional resou...

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Autores: Martínez Álvarez, Victoriano, Imbernón Mulero, Alberto, Maestre Valero, José Francisco, Ben Abdallah, Saker, Gallego Elvira, Belén
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad Politécnica de Cartagena(UPCT)
Repositorio:Repositorio Digital UPCT
OAI Identifier:oai:repositorio.upct.es:10317/13499
Acceso en línea:http://hdl.handle.net/10317/13499
https://www.mdpi.com/2073-4395/13/12/2878
Access Level:acceso abierto
Palabra clave:desalination
agriculture resilience
water quality
fertilization requirements
boron phytotoxicity
soil alkalinization
Ingeniería Agroforestal
31 Ciencias Agrarias
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spelling Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern SpainMartínez Álvarez, VictorianoImbernón Mulero, AlbertoMaestre Valero, José FranciscoBen Abdallah, SakerGallego Elvira, Beléndesalinationagriculture resiliencewater qualityfertilization requirementsboron phytotoxicitysoil alkalinizationIngeniería Agroforestal31 Ciencias AgrariasClimate change is affecting water resources in south-eastern Spain, and this mainly affects irrigated agriculture. In this context, seawater desalination is an adaptive strategy that has provided increasing water allotments to agriculture for the last decade, to replace decreasing conventional resources. Farmers are concerned about the agronomic effects of this substitution and its economic consequences. This study focuses on the potential agronomic impacts of the progressive replacement of the irrigation water from the Tagus–Segura transfer (TST) with desalinated seawater (DSW) on the main crops of south-eastern Spain. To that end, five main agronomic concerns were selected and analyzed under three water supply scenarios using increasing rates of DSW (0, 50, and 100%). The results indicated that, in addition to other economic or environmental considerations, sufficiently relevant agronomic aspects exist that need to be considered when replacing the TST supply with DSW. This study evidences the risks of phytotoxicity and soil alkalinization, due to the increase in boron concentration and the imbalance between monovalent and divalent cations in the DSW, respectively, and also a slight increase in the cost of fertilizers. In addition, the irrigation water salinity effect on production and total irrigation requirements was negligible, as both water sources present sufficiently low salinity. The detrimental effects were mitigated under a partial replacement scenario, so the blended use of DSW with conventional resources seems the most recommendable option for its agricultural management, rather than irrigating with DSW alone.This work is a result of the AGROALNEXT program and was supported by MCIN with funding from European Union NextGenerationEU (PRTR-C17.I1) and by Fundación Séneca with funding from Comunidad Autónoma Región de Murcia (CARM). The research was also funded by MCIN/AEI/10.13039/501100011033, project SEA4CROP (PID2020-118492RA-C22). Imbernón-Mulero acknowledges support for his Ph.D. work from the project SEA4CROP and the predoctoral program of the Technical University of Cartagena (RV-484/21, UPCT, Spain). B. Gallego-Elvira acknowledges support from the Spanish Ministry of Universities (“Beatriz Galindo” Fellowship BEAGAL18/00081).MDPIMinisterio de Ciencia e InnovaciónAgencia Estatal de Investigación (España)Fundación Séneca202420242023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/10317/13499https://www.mdpi.com/2073-4395/13/12/2878reponame:Repositorio Digital UPCTinstname:Universidad Politécnica de Cartagena(UPCT)Inglésinfo:eu-repo/grantAgreement/MCIN/AGROALNEXT/PRTR-C17.I1info:eu-repo/grantAgreement/FS/AGROALNEXT/PRTR-C17.I1info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigacion Cientifica y Tecnica y de Innovacion 2017-2020/PID2020-118492RA-C22PRTR-C17.I1PID2020-118492RA-C22Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:repositorio.upct.es:10317/134992026-05-15T06:39:02Z
dc.title.none.fl_str_mv Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain
title Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain
spellingShingle Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain
Martínez Álvarez, Victoriano
desalination
agriculture resilience
water quality
fertilization requirements
boron phytotoxicity
soil alkalinization
Ingeniería Agroforestal
31 Ciencias Agrarias
title_short Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain
title_full Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain
title_fullStr Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain
title_full_unstemmed Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain
title_sort Agronomic analysis of the replacement of conventional agricultural water supply by desalinated seawater as an adaptive strategy to water scarcity in South-Eastern Spain
dc.creator.none.fl_str_mv Martínez Álvarez, Victoriano
Imbernón Mulero, Alberto
Maestre Valero, José Francisco
Ben Abdallah, Saker
Gallego Elvira, Belén
author Martínez Álvarez, Victoriano
author_facet Martínez Álvarez, Victoriano
Imbernón Mulero, Alberto
Maestre Valero, José Francisco
Ben Abdallah, Saker
Gallego Elvira, Belén
author_role author
author2 Imbernón Mulero, Alberto
Maestre Valero, José Francisco
Ben Abdallah, Saker
Gallego Elvira, Belén
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación
Agencia Estatal de Investigación (España)
Fundación Séneca
dc.subject.none.fl_str_mv desalination
agriculture resilience
water quality
fertilization requirements
boron phytotoxicity
soil alkalinization
Ingeniería Agroforestal
31 Ciencias Agrarias
topic desalination
agriculture resilience
water quality
fertilization requirements
boron phytotoxicity
soil alkalinization
Ingeniería Agroforestal
31 Ciencias Agrarias
description Climate change is affecting water resources in south-eastern Spain, and this mainly affects irrigated agriculture. In this context, seawater desalination is an adaptive strategy that has provided increasing water allotments to agriculture for the last decade, to replace decreasing conventional resources. Farmers are concerned about the agronomic effects of this substitution and its economic consequences. This study focuses on the potential agronomic impacts of the progressive replacement of the irrigation water from the Tagus–Segura transfer (TST) with desalinated seawater (DSW) on the main crops of south-eastern Spain. To that end, five main agronomic concerns were selected and analyzed under three water supply scenarios using increasing rates of DSW (0, 50, and 100%). The results indicated that, in addition to other economic or environmental considerations, sufficiently relevant agronomic aspects exist that need to be considered when replacing the TST supply with DSW. This study evidences the risks of phytotoxicity and soil alkalinization, due to the increase in boron concentration and the imbalance between monovalent and divalent cations in the DSW, respectively, and also a slight increase in the cost of fertilizers. In addition, the irrigation water salinity effect on production and total irrigation requirements was negligible, as both water sources present sufficiently low salinity. The detrimental effects were mitigated under a partial replacement scenario, so the blended use of DSW with conventional resources seems the most recommendable option for its agricultural management, rather than irrigating with DSW alone.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10317/13499
https://www.mdpi.com/2073-4395/13/12/2878
url http://hdl.handle.net/10317/13499
https://www.mdpi.com/2073-4395/13/12/2878
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MCIN/AGROALNEXT/PRTR-C17.I1
info:eu-repo/grantAgreement/FS/AGROALNEXT/PRTR-C17.I1
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigacion Cientifica y Tecnica y de Innovacion 2017-2020/PID2020-118492RA-C22
PRTR-C17.I1
PID2020-118492RA-C22
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Repositorio Digital UPCT
instname:Universidad Politécnica de Cartagena(UPCT)
instname_str Universidad Politécnica de Cartagena(UPCT)
reponame_str Repositorio Digital UPCT
collection Repositorio Digital UPCT
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repository.mail.fl_str_mv
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