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Adapting almond production to climate change through deficit irrigation and foliar kaolin application in a mediterranean climate

2023Journal article Open access
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dc.contributor.authorBarreales, David
dc.contributor.authorCapitão, Susana dos Anjos
dc.contributor.authorBento, Albino
dc.contributor.authorCasquero, Pedro Antonio
dc.contributor.authorRibeiro, A.C.
dc.date.accessioned2023-12-18T09:56:36Z
dc.date.available2023-12-18T09:56:36Z
dc.date.issued2023
dc.description.abstractIrrigation is the best strategy to reduce the adverse effects of water stress on almond trees [Prunus dulcis (Mill) D.A. Web] and improve their productivity. However, in the current context of climatic change, in which the amount of water available for irrigation is increasingly limited, deficit irrigation (DI) strategies have become essential in the almond orchards of southern Europe. Other practices, such as the foliar application of reflective compounds, are being implemented. A three-year experiment (2019–2021) was set in a factorial design in which the effect of regulated deficit irrigation and foliar kaolin spray was evaluated on physiological (predawn leaf water potential, relative water content, leaf area, leaf gas exchange, and chlorophyll fluorescence) and agronomic parameters (yield, yield components, and water use efficiency (WUE)). The treatments include full irrigation (FI), which received 100% of ETc (crop evapotranspiration) during all irrigation seasons; regulated deficit irrigation (RDI), which received 100% of ETc until the kernel-filling stage, reducing the application to 35% ETc during the kernel-filling stage until harvest; and both irrigation regimes combined with kaolin application and two cultivars, Constantí and Vairo. More negative water potential values were observed in the RDI treatments compared to the FI treatments. There were no significant differences in the stomatal conductance, photosynthetic rate, or transpiration rate between treatments with RDI and FI, demonstrating the almond tree’s good adaptation to irrigation reduction in the kernel-filling stage. The two cultivars had different responses in cumulative yield throughout the three years of the trial. The cv. Constantí did not present significant differences between the FI and RDI treatments, translating into improved WUE. In contrast, the cv. Vairo suffered a reduction in accumulated performance in the RDI treatments with respect to the FI. The foliar application of kaolin did not present differences in yield and very few in the physiological activity of the almond trees. With the results obtained, we can suggest that under the conditions of our experiment, the combination of RDI and the kaolin foliar application can help save irrigation water and produce almonds more sustainably.pt_PT
dc.description.sponsorshipThe authors acknowledge the financial support of Operational Group EGIS—Estratégias de Gestão Integrada do Solo e da Água em Espécies Produtoras de Frutos Secos, PDR2020-1.0.1- FEADER-030981, funded by PT2020 and EAFRD (European Agricultural Fund for Rural Development). David Barreales thanks the Foundation for Science and Technology (FCT) for the Ph.D. grants SFRH/BD/139393/2018 and COVID/BD/152770/2023. This manuscript is part of David Barreales’s Ph.D. thesis. The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support by national funds FCT/MCTES(PIDDAC) and CIMO (UIDB/00690/2020 and UIDP/00690/2020), and to the Associate Laboratory SusTEC (LA/P/0007/2021).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBarreales, David; Capitão, Susana dos Anjos; Bento, Albino; Casquero, Pedro Antonio; Ribeiro, A.C. (2023). Adapting almond production to climate change through deficit irrigation and foliar kaolin application in a mediterranean climate. Atmosphere. eISSN 2073-4433. 14:10, p. 1-26pt_PT
dc.identifier.doi10.3390/atmos14101593pt_PT
dc.identifier.eissn2073-4433
dc.identifier.urihttp://hdl.handle.net/10198/28963
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationLA/P/0007/2021pt_PT
dc.relationInfluência do regime hídrico no comportamento fisiológico, agronómico e qualidade da produção em culturas mediterrânicas.
dc.relationInfluência do regime hídrico no comportamento fisiológico, agronómico e qualidade da produção em culturas mediterrânicas.
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectWater stresspt_PT
dc.subjectClimate changept_PT
dc.subjectFoliar reflective filmpt_PT
dc.subjectWater use efficiencypt_PT
dc.titleAdapting almond production to climate change through deficit irrigation and foliar kaolin application in a mediterranean climatept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInfluência do regime hídrico no comportamento fisiológico, agronómico e qualidade da produção em culturas mediterrânicas.
oaire.awardTitleInfluência do regime hídrico no comportamento fisiológico, agronómico e qualidade da produção em culturas mediterrânicas.
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F139393%2F2018/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/COVID%2FBD%2F152770%2F2023/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT
oaire.citation.endPage26pt_PT
oaire.citation.issue10pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleAtmospherept_PT
oaire.citation.volume14pt_PT
oaire.fundingStreamPOR_NORTE
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBarreales
person.familyNameCapitão
person.familyNameBento
person.familyNameRibeiro
person.givenNameDavid
person.givenNameSusana dos Anjos
person.givenNameAlbino
person.givenNameAntónio C.
person.identifier.ciencia-idFA16-8DE7-6968
person.identifier.ciencia-id7C11-1B6C-6671
person.identifier.ciencia-idD516-325A-9AD7
person.identifier.ciencia-id9D19-E833-BE97
person.identifier.orcid0000-0002-8425-0167
person.identifier.orcid0000-0001-9644-1596
person.identifier.orcid0000-0001-5215-785X
person.identifier.orcid0000-0002-8280-9027
person.identifier.ridN-9706-2016
person.identifier.scopus-author-id57202136257
person.identifier.scopus-author-id35247694000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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