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dc.contributor.authorDe Souza, Romina
dc.contributor.authorGrasso, Rafael
dc.contributor.authorPeña Fleitas, María Teresa
dc.contributor.authorGallardo Pino, María Luisa
dc.contributor.authorThompson, Rodney
dc.contributor.authorPadilla Ruiz, Francisco Manuel
dc.date.accessioned2020-01-20T13:18:32Z
dc.date.available2020-01-20T13:18:32Z
dc.date.issued2020-01-16
dc.identifier.issn1424-8220
dc.identifier.urihttp://hdl.handle.net/10835/7673
dc.description.abstractOptical sensors can be used to assess crop N status to assist with N fertilizer management. Differences between cultivars may affect optical sensor measurement. Cultivar effects on measurements made with the SPAD-502 (Soil Plant Analysis Development) meter and the MC-100 (Chlorophyll Concentration Meter), and of several vegetation indices measured with the Crop Circle ACS470 canopy reflectance sensor, were assessed. A cucumber (Cucumis sativus L.) crop was grown in a greenhouse, with three cultivars. Each cultivar received three N treatments, of increasing N concentration, being deficient (N1), sufficient (N2) and excessive (N3). There were significant differences between cultivars in the measurements made with both chlorophyll meters, particularly when N supply was sufficient and excessive (N2 and N3 treatments, respectively). There were no consistent differences between cultivars in vegetation indices. Optical sensor measurements were strongly linearly related to leaf N content in each of the three cultivars. The lack of a consistent effect of cultivar on the relationship with leaf N content suggests that a unique equation to estimate leaf N content from vegetation indices can be applied to all three cultivars. Results of chlorophyll meter measurements suggest that care should be taken when using sufficiency values, determined for a particular cultivares_ES
dc.language.isoenes_ES
dc.publisherMDPIes_ES
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectgenotypees_ES
dc.subjectgreenhousees_ES
dc.subjectleaf nitrogenes_ES
dc.subjectproximal optical sensorses_ES
dc.subjectvegetation indexes_ES
dc.titleEffect of Cultivar on Chlorophyll Meter and Canopy Reflectance Measurements in Cucumberes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://www.mdpi.com/1424-8220/20/2/509es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional