Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies

11 páginas.- 7 figuras.- 6 tablas.- 54 referencias

Detalles Bibliográficos
Autores: García-Tejero, Iván F., Rubio Casal, A. E., Viñuela, I., Hernández, Almudena, Gutiérrez-Gordillo, Saray, Rodríguez Pleguezuelo, Carmen R., Durán Zuazo, Víctor Hugo
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/360917
Acceso en línea:http://hdl.handle.net/10261/360917
Access Level:acceso abierto
Palabra clave:Thermography
Thermal indexes
Water stress
Leaf gas exchange and leaf water potential
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spelling Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategiesGarcía-Tejero, Iván F.Rubio Casal, A. E.Viñuela, I.Hernández, AlmudenaGutiérrez-Gordillo, SarayRodríguez Pleguezuelo, Carmen R.Durán Zuazo, Víctor HugoThermographyThermal indexesWater stressLeaf gas exchange and leaf water potential11 páginas.- 7 figuras.- 6 tablas.- 54 referenciasAlmond (Prunnus dulcis Mill.) has been traditionally associated to marginal land cultivation and rain-fed agriculture in South Spain. However, in the last years, this crop is being progressively introduced in more productive agricultural areas within the Guadalquivir river basin, where the available water resources are not enough to satisfy the adequate crop-water requirements. Considering this limitation, a more precise irrigation scheduling to maximize the yield is required. Infrared thermal imaging emerges as alternative to other traditional methodologies to assess the crop-water status, especially when deficit irrigation (DI) strategies are being applied. The aim of this study was to define the methodology to assess the almond water status by means of thermal information. The trial was conducted during 2014, during the kernel-filling period, in an almond experimental orchard (SW Spain), with 5-year-old trees, subjected to three irrigation regimes: i) a full-irrigation treatment (C-100), which received 100% of ETC; ii) a regulated deficit irrigation (RDI-50), which received 100% of ETC except during the kernel filling period, when this treatment was irrigated with 50% of ETC; iii) and a low-frequency deficit irrigation treatment (LFDI), which received 100% of ETC except during the kernel filling period, when it was subjected to continuous periods of irrigation-restriction, defined in terms of the threshold values of shaded leaf water potential (Ψleaf). Three daily curves of canopy temperature (TC), stomatal conductance to water vapour (gs) and Ψleaf with measurements at 8:00, 11:00, 14:00, 17:00 and 20:00 were developed. Additionally, Crop Water Stress Index (CWSI), temperature difference between canopy and the surrounding air (ΔTcanopy-air), and the relative index to stomatal conductance (IG) obtained at different scales (canopy and row) were estimated. Significant correlations of infrared thermal information vs. Ψleaf and gs were obtained (p ≤ 0.05 and p ≤ 0.01), in particular, by using the thermal readings taken at 11:30, 14:30 at 17:30 h, especially robust were the relationships obtained between TC and CWSI with Ψleaf at 11:30 h; and between TC and CWSI with gs, and Ψleaf at 14:30 h. Finally, considering the infrared thermal monitoring procedure (readings at tree and row level), similar values of TC were obtained, and therefore, the images taken at row level offered a better information with a higher feasibility in terms of image processing.Part of this work was sponsored by the research project “Integrated management of almond and other nuts crops” (AVA.AVA201601.18), within the Operational Program FEDER 2014-2020″Andalusia moves with Europe ". The author I. Garcia-Tejero has a contract co-financed by the Operational Program of the European Social Fund (ESF) 2007-2013″Andalusia moves with Europe".NoElsevierEuropean CommissionJunta de AndalucíaGarcía-Tejero, Iván F. [0000-0002-4606-0880]Gutiérrez-Gordillo, Saray [0000-0003-2063-0424]Durán Zuazo, Víctor Hugo [0000-0002-3220-963X]202420242018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/360917reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Rusohttp://dx.doi.org/10.1016/j.agwat.2018.06.002Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3609172026-05-22T06:33:51Z
dc.title.none.fl_str_mv Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies
title Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies
spellingShingle Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies
García-Tejero, Iván F.
Thermography
Thermal indexes
Water stress
Leaf gas exchange and leaf water potential
title_short Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies
title_full Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies
title_fullStr Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies
title_full_unstemmed Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies
title_sort Thermal imaging at plant level to assess the crop-water status in almond trees (cv. Guara) under deficit irrigation strategies
dc.creator.none.fl_str_mv García-Tejero, Iván F.
Rubio Casal, A. E.
Viñuela, I.
Hernández, Almudena
Gutiérrez-Gordillo, Saray
Rodríguez Pleguezuelo, Carmen R.
Durán Zuazo, Víctor Hugo
author García-Tejero, Iván F.
author_facet García-Tejero, Iván F.
Rubio Casal, A. E.
Viñuela, I.
Hernández, Almudena
Gutiérrez-Gordillo, Saray
Rodríguez Pleguezuelo, Carmen R.
Durán Zuazo, Víctor Hugo
author_role author
author2 Rubio Casal, A. E.
Viñuela, I.
Hernández, Almudena
Gutiérrez-Gordillo, Saray
Rodríguez Pleguezuelo, Carmen R.
Durán Zuazo, Víctor Hugo
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Junta de Andalucía
García-Tejero, Iván F. [0000-0002-4606-0880]
Gutiérrez-Gordillo, Saray [0000-0003-2063-0424]
Durán Zuazo, Víctor Hugo [0000-0002-3220-963X]
dc.subject.none.fl_str_mv Thermography
Thermal indexes
Water stress
Leaf gas exchange and leaf water potential
topic Thermography
Thermal indexes
Water stress
Leaf gas exchange and leaf water potential
description 11 páginas.- 7 figuras.- 6 tablas.- 54 referencias
publishDate 2018
dc.date.none.fl_str_mv 2018
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/360917
url http://hdl.handle.net/10261/360917
dc.language.none.fl_str_mv Ruso
language_invalid_str_mv Ruso
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.agwat.2018.06.002
No
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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