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dc.contributor.authorMartinez-Cob, Antonio
dc.contributor.authorFaci González, José M.
dc.contributor.authorBlanco Alibés, Olga
dc.contributor.authorMedina, Eva T.
dc.contributor.authorSuvocarev, Kosana
dc.date.accessioned2017-07-13T08:43:21Z
dc.date.available2017-07-13T08:43:21Z
dc.date.issued2014
dc.identifier.issn1695-971X
dc.identifier.urihttp://hdl.handle.net/10459.1/60067
dc.description.abstractThis paper evaluates the feasibility of using pyranometers for continuous estimation of ground cover fraction (GCF) at remote, unattended sites. Photographical techniques were used for measuring GCF (GCF ref ) at a table grape vineyard grown under a net. Daily pyranometer-driven GCF estimates (GCF pyr ) were obtained from solar radiation measurements above and below the canopy. For GCF pyr computation, solar radiation was averaged for two hours around solar noon (midday periods) and for daylight periods (8:00 to 18:00 Universal Time Coordinated). GCF pyr and GCF ref (daylight periods) showed a good agreement: mean estimation error, 0.000; root mean square error, 0.113; index of agreement, 0.967. The high GCF attained, the large measurement range for GCF and the presence of the net above the table grape were the likely reasons for the good performance of GCF pyr in this crop despite the short number of pyranometers used. Further research is required to develop more appropriate calibration equations of GCF pyr and for a more detailed evaluation of using a short number of pyranometers to estimate GCF.ca_ES
dc.description.sponsorshipThis work was funded by the Ministry of Science and Innovation, Spain (project Consolider CSD2006- 00067).ca_ES
dc.language.isoengca_ES
dc.publisherInstituto Nacional de Investigación y Tecnología Agraria y Alimentariaca_ES
dc.relationMIECI/PN2004-2007/CSD2006-00007
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.5424/sjar/2014123-5453ca_ES
dc.relation.ispartofSpanish Journal of Agricultural Research, 2014, vol. 12, núm. 3, p. 603-610ca_ES
dc.rights(c) Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2014ca_ES
dc.subjectShadingca_ES
dc.subjectPARca_ES
dc.subjectVitis viniferaca_ES
dc.subjectGlobal solar radiationca_ES
dc.titleFeasibility of using pyranometers for continuous estimation of ground cover fraction in table grape vineyardsca_ES
dc.typearticleca_ES
dc.identifier.idgrec022950
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.identifier.doihttps://doi.org/10.5424/sjar/2014123-5453


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