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dc.contributorUniv Mayor, Fac Ciencias, Hemera Ctr Observac Tierra, Chilees
dc.contributor.authorJopia, Alberto [Univ Mayor, Fac Ciencias, Hemera Ctr Observac Tierra, Escuela Agron, Chile]
dc.contributor.authorZambrano, Francisco [Univ Mayor, Fac Ciencias, Hemera Ctr Observac Tierra, Escuela Agron, Chile]
dc.contributor.authorPérez-Martínez, Waldo [Univ Mayor, Fac Ciencias, Hemera Ctr Observac Tierra, Escuela Ingn Forestal, Chile]
dc.contributor.authorMolina, Julio [Univ Mayor, Fac Ciencias, Escuela Agron, Chile]
dc.contributor.authorHoz Mardones, Felipe de la
dc.date.accessioned2022-02-23T20:04:25Z
dc.date.available2022-02-23T20:04:25Z
dc.date.issued2020-11
dc.identifier.citationJopia, A., Zambrano, F., Pérez-Martínez, W., Vidal-Páez, P., Molina, J., & De la Hoz Mardones, F. (2020). Time-series of vegetation indices (VNIR/SWIR) derived from sentinel-2 (A/B) to assess turgor pressure in kiwifruit. ISPRS International Journal of Geo-Information, 9(11), 641.es
dc.identifier.issn2220-9964
dc.identifier.otherWOS: 000593431200001
dc.identifier.urihttp://repositorio.umayor.cl/xmlui/handle/sibum/8295
dc.identifier.urihttps://www.mdpi.com/2220-9964/9/11/641/pdf
dc.identifier.urihttps://doi.org/10.3390/ijgi9110641
dc.identifier.urihttps://www.preprints.org/manuscript/202009.0625/v1
dc.description.abstractSimple Summary: Measures of plant water status on kiwifruit were evaluated using Sentinel-2 (A/B) for two seasons in Central Chile. For more than ten years, Central Chile has faced drought conditions, which impact crop production and quality, increasing food security risk. Under this scenario, implementing management practices that allow increasing water use efficiency is urgent. The study was carried out on kiwifruit trees, located in the O'Higgins region, Chile for season 2018-2019 and 2019-2020. We evaluate the time-series of nine vegetation indices in the VNIR and SWIR regions derived from Sentinel-2 (A/B) satellites to establish how much variability in the canopy water status there was. Over the study's site, eleven sensors were installed in five trees, which continuously measured the leaf's turgor pressure (Yara Water-Sensor). A strong Spearman's (rho) correlation between turgor pressure and vegetation indices was obtained, having -0.88 with EVI and -0.81 with GVMI for season 2018-2019, and lower correlation for season 2019-2020, reaching -0.65 with Rededge1 and -0.66 with EVI. However, the NIR range's indices were influenced by the vegetative development of the crop rather than its water status. The red-edge showed better performance as the vegetative growth did not affect it. It is necessary to expand the study to consider higher variability in kiwifruit's water conditions and incorporate the sensitivity of different wavelengths.es
dc.description.sponsorshipThis study was financed thanks to the contribution of the FONDECYT project 11190360, of the National Research and Development Agency (ANID), Chile.es
dc.format.extent18 p., PDFes
dc.language.isoen_USes
dc.publisherMDPI AGes
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chilees
dc.titleTime-Series of Vegetation Indices (VNIR/SWIR) Derived from Sentinel-2 (A/B) to Assess Turgor Pressure in Kiwifruites
dc.typeArtículo o Paperes
umayor.indizadorCOTes
umayor.politicas.sherpa/romeoLicence CC BY 4.0. Disponible en: https://v2.sherpa.ac.uk/id/publication/22273es
umayor.indexadoWeb of Sciencees
umayor.indexadoDOAJes
dc.identifier.doi10.3390/ijgi9110641
umayor.indicadores.wos-(cuartil)Q2
umayor.indicadores.scopus-(scimago-sjr)SCIMAGO/ INDICE H: 43 H
umayor.indicadores.scopus-(scimago-sjr)SJR 0.68


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