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dc.contributor.authorBallester, Carlos
dc.contributor.authorCastel, Juan R.
dc.contributor.authorJiménez-Bello, Miguel Ángel
dc.contributor.authorCastel, Juan R.
dc.contributor.authorIntrigliolo, Diego S.
dc.date.accessioned2017-06-01T10:10:51Z
dc.date.available2017-06-01T10:10:51Z
dc.date.issued2013
dc.identifier.citationBallE., C., Castel, J., Jimenez-Bello, M.A., Castel, J.R., Intrigliolo, D.S. (2013). Thermographic measurement of canopy temperature is a useful tool for predicting water deficit effects on fruit weight in citrus trees. Agricultural Water Management, 122, 1-6.
dc.identifier.issn0378-3774
dc.identifier.urihttp://hdl.handle.net/20.500.11939/4727
dc.description.abstractAlternative and more practical methods for plant water stress detection than stem water potential (psi(s)) and stomatal conductance (g(s)) are needed when regulated deficit irrigation (RDI) strategies are applied. The aim of this experiment was to compare sap flow and canopy temperature (T-c) measurements with more classical methods like psi(s) or g(s) to predict the effect of deficit irrigation on fresh fruit weight in citrus trees. The experiment was performed during the summer of 2011 in a "Clementina de Nules" orchard undergoing RDI. Sap flow was determined by means of the compensation heat pulse method in well-watered and RDI trees. T-c was measured continuously with infrared thermometers (IRTs) mounted over the canopies and also weekly with an infrared hand-operated thermographic camera taking frontal images of the sunlit side of tree crowns. Concurrently psi(s) and g(s) were also measured on all trees. Results showed that the evolution of the relative transpiration obtained with the sap flow sensors was in agreement with the plant water stress experienced. The values of T-c obtained with the fixed IRTs, normalized by air temperature (T-c - T-a) were in general poorly related with psi(s) and g(s). However, when T-c was obtained from thermal imaging, there was a good correlation with psi(s) in days of relatively high water stress (i.e. when psi(s) differences among treatments were >1.0 MPa). The average fruit weight at harvest was significantly correlated with all the stress indicators, and the best correlation was that of thermographic followed by psi(s) and g(s). Overall, results showed that in citrus trees T-c measurement obtained from thermal imaging is a good tool to predict the effect of water deficit on fresh fruit weight. (c) 2013 Elsevier B.V. All rights reserved.
dc.language.isoen
dc.titleThermographic measurement of canopy temperature is a useful tool for predicting water deficit effects on fruit weight in citrus trees
dc.typearticle
dc.authorAddressInstituto Valenciano de Investigaciones Agrarias (IVIA), Carretera CV-315, Km. 10’7, 46113 Moncada (Valencia), Españaes
dc.date.issuedFreeFormMAY 2013
dc.entidadIVIACentro para el Desarrollo de la Agricultura Sostenible
dc.entidadIVIAServicio de Tecnología del Riego
dc.identifier.doi10.1016/j.agwat.2013.02.005
dc.journal.abbreviatedTitleAgric.Water Manage.
dc.journal.titleAgricultural Water Management
dc.journal.volumeNumber122
dc.page.final6
dc.page.initial1
dc.rights.accessRightsopenAccess
dc.source.typeImpreso
dc.type.hasVersionacceptedVersion


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