dc.creator | Díaz Espejo, Antonio | es |
dc.creator | Buckley, T. N. | es |
dc.creator | Sperry, J. S. | es |
dc.creator | Cuevas Sánchez, María Victoria | es |
dc.creator | Cires Segura, Alfonso de | es |
dc.creator | Elsayed-Farag, S. | es |
dc.creator | Martín Palomo, María José | es |
dc.creator | Muriel Fernández, José Luis | es |
dc.creator | Pérez Martín, Alfonso | es |
dc.creator | Rodríguez Domínguez, Celia Modesta | es |
dc.creator | Rubio Casal, Alfredo Emilio | es |
dc.creator | Torres Ruiz, José Manuel | es |
dc.creator | Fernández Luque, José Enrique | es |
dc.date.accessioned | 2020-06-08T11:19:19Z | |
dc.date.available | 2020-06-08T11:19:19Z | |
dc.date.issued | 2012-11 | |
dc.identifier.citation | Díaz Espejo, A., Buckley, T.N., Sperry, J.S., Cuevas Sánchez, M.V., Cires Segura, A.d., Elsayed-Farag, S.,...,Fernández Luque, J.E. (2012). Steps toward an improvement in process-based models of water use by fruit trees: A case study in olive. Agricultural Water Management, 114, 37-49. | |
dc.identifier.issn | 0378-3774 | es |
dc.identifier.uri | https://hdl.handle.net/11441/97533 | |
dc.description.abstract | We applied two process-based models in a hedgerow olive orchard with the aim of understanding the
limitations and mechanisms behind the control of transpiration in olive trees under drip irrigation. One
model is based on the biophysics of water flow through the porous media of soil and xylem. The other is
a hydromechanical model based on the observed dependence of stomatal aperture on whole-plant and
epidermis water relations. The experiments were made in a hedgerow olive orchard (1667 trees ha−1)
planted with 5-year-old ‘Arbequina’ trees. Measurements were made in control trees irrigated to replace
100% of the crop water needs, and in trees under regulated deficit irrigation (RDI) strategy, in which
irrigation replaced ca. 30% of the control. Soil physical properties, root distribution, leaf area, sap flow,
leaf osmotic pressure and key variables of leaf gas exchange and water status were measured and models
were applied. Results show how in our orchard, with a shallow root distribution and very coarse soil, most
of the limitation to transpiration was imposed by the hydraulics of the rhizosphere. The model shows
how this limitation was related to the ratio of root to leaf area, and how this ratio can be managed by
canopy pruning or by changing the number of drippers. Likewise, osmotic adjustment occurred similarly
in both irrigation treatments, despite differences found on leaf water potential. Water stress largely
affected plant hydraulic conductivity of RDI trees. A potential involvement of regulating signals, other
than purely hydraulics, was evident in both treatments, although our data suggests that these signals
were not regulated by the soil water status only. | es |
dc.description.sponsorship | Ministerio de Ciencia e Innovación español AGL2009-11310 / AGR | es |
dc.description.sponsorship | Junta de Andalucía AGR-6456-2010 | es |
dc.description.sponsorship | Fondos FEDER. Unión Europea | es |
dc.format | application/pdf | es |
dc.format.extent | 13 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier Masson | es |
dc.relation.ispartof | Agricultural Water Management, 114, 37-49. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Stomatal conductance model | es |
dc.subject | Drought | es |
dc.subject | Olea | es |
dc.subject | Vulnerability curve | es |
dc.subject | Root length density Irrigation | es |
dc.title | Steps toward an improvement in process-based models of water use by fruit trees: A case study in olive | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Biología Vegetal y Ecología | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ciencias Agroforestales | es |
dc.relation.projectID | AGL2009-11310 / AGR | es |
dc.relation.projectID | AGR-6456-2010 | es |
dc.relation.publisherversion | https://doi.org/10.1016/j.agwat.2012.06.027 | es |
dc.identifier.doi | 10.1016/j.agwat.2012.06.027 | es |
dc.journaltitle | Agricultural Water Management | es |
dc.publication.volumen | 114 | es |
dc.publication.initialPage | 37 | es |
dc.publication.endPage | 49 | es |
dc.identifier.sisius | 20343403 | es |
dc.contributor.funder | Ministerio de Ciencia e Innovación (MICIN). España | es |
dc.contributor.funder | Junta de Andalucía | es |
dc.contributor.funder | European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) | es |