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Linear relationship of a soil total water potential function and relative yield—A technique to control salinity and water stress on golf courses and other irrigated fields

2021-10Journal article Open Access
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dc.contributor.authorBeltrão, José
dc.contributor.authorBekmirzaev, Gulom
dc.contributor.authorBen Asher, Jiftah
dc.contributor.authorCosta, Manuel
dc.contributor.authorPanagopoulos, Thomas
dc.date.accessioned2021-11-12T15:44:32Z
dc.date.available2021-11-12T15:44:32Z
dc.date.issued2021-10
dc.description.abstractA simple empirical approach is proposed for the determination of crop relative yield (%) through the soil total water potential (kPa). Recurring to decimal logarithms, from analytical exponential expressions, a linear simple relationship of soil total water potential Ψt (matric Ψm + potential Ψo) function and crop relative yield was studied and developed. The combination of the salinity model, the soil water retention model and the matric potential approach were used to reach this objective. The representation of turfgrass crop relative yield (%) versus a function of soil total water potential f(Ψt) values was shown through a log-normal graph (y = a + mx); the log scale axis “y” (ordinates) defines relative yield Yr, being two the origin ordinate “a” and “m” the slope; the normal decimal scale axis “x” (abscissa) is the function of soil total water potential f(Ψt). Hence, it is possible, using only two experimental points, to define a simple linear relation between a function of soil total water potential and crop relative yield, for a soil matric potential value lower than −20 kPa. This approach was first tested on golf courses (perennial turfgrass fields), but it was further decided to extend it to other annual crop fields, focused on the model generalization. The experimental plots were established, respectively, in Algarve, Alentejo and Oeiras (Portugal) and in the North Negev (Israel). Sprinkler and trickle irrigation systems, under randomized blocks and/or water and salt gradient techniques, were used for water application with a precise irrigation water and salt distribution. Results indicated that there is a high agreement between the experimental and the prediction values (R2 = 0.92). Moreover, the precision of this very simple and easy tool applied to turfgrass fields and other irrigated soils, including their crop yields, under several different sites and climatic conditions, can contribute to its generalization.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/agronomy11101916pt_PT
dc.identifier.eissn2073-4395
dc.identifier.urihttp://hdl.handle.net/10400.1/17324
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationImproving life in a changing urban environment through Biophilic Design (BIODES)
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCrop yieldpt_PT
dc.subjectAvailability of saline soil waterpt_PT
dc.subjectSprinkler irrigationpt_PT
dc.subjectWater applicationpt_PT
dc.subjectSalinity modelspt_PT
dc.titleLinear relationship of a soil total water potential function and relative yield—A technique to control salinity and water stress on golf courses and other irrigated fieldspt_PT
dc.title.alternativeRelação linear de uma função potencial de água total do solo e técnica relativa de rendimento-A para controlar a salinidade e o estresse da água em campos de golfe e outros campos irrigadospt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleImproving life in a changing urban environment through Biophilic Design (BIODES)
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FGES-URB%2F31928%2F2017/PT
oaire.citation.issue10pt_PT
oaire.citation.startPage1916pt_PT
oaire.citation.titleAgronomypt_PT
oaire.citation.volume11pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameBeltrão
person.familyNamePanagopoulos
person.givenNameJosé
person.givenNameThomas
person.identifierR-000-K9N
person.identifier.ciencia-id411D-5652-57A8
person.identifier.orcid0000-0003-2786-5656
person.identifier.orcid0000-0002-8073-2097
person.identifier.ridA-3048-2012
person.identifier.scopus-author-id24072790700
person.identifier.scopus-author-id9736690000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication3dfd5be1-8e22-4dda-bd34-f3b1e5f249e2
relation.isAuthorOfPublication.latestForDiscoveryd9cbe32d-47bf-4cca-871b-432438f45796
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