Evaluation of a simplified methodology to estimate the CWSI in olive orchards

The canopy temperature is a promising methodology for deficit irrigation scheduling. This measurement is used to calculate the crop water stress index (CWSI), which needs the estimation of non-water stress baseline (NWSB). In olive orchards, NWSB changed at different times of the day and throughout...

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Detalhes bibliográficos
Autores: Sánchez Piñero, Marta, Martín Palomo, María José, Andreu Cáceres, Luis, Moriana Elvira, Alfonso, Corell González, Mireia
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Recursos:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/149378
Acesso em linha:https://hdl.handle.net/11441/149378
https://doi.org/10.1016/j.agwat.2022.107729
Access Level:acceso abierto
Palavra-chave:NWSB
Regulated Deficit Irrigation
Table olive
Water potential
Water relations
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spelling Evaluation of a simplified methodology to estimate the CWSI in olive orchardsSánchez Piñero, MartaMartín Palomo, María JoséAndreu Cáceres, LuisMoriana Elvira, AlfonsoCorell González, MireiaNWSBRegulated Deficit IrrigationTable oliveWater potentialWater relationsThe canopy temperature is a promising methodology for deficit irrigation scheduling. This measurement is used to calculate the crop water stress index (CWSI), which needs the estimation of non-water stress baseline (NWSB). In olive orchards, NWSB changed at different times of the day and throughout the season. The aim of this work was to evaluate a simplified methodology for estimating NWSB to allow reducing costs and facilitate the CWSI estimation. The experiment was performed during two consecutive seasons (2020 and 2021) in a young superintensive density olive orchard (Olea europaea L. cv Manzanillo). Three irrigation treatments were evaluated in a completely randomized design with 6 repetitions: Control, Full Irrigated; Regulated Deficit Irrigation (RDI) with a period of water stress during pit hardening, and Rainfed. The midday stem water potential and leaf conductance were measured every week during the irrigation season. The canopy temperature was measured with a low-cost thermal camera attached to a tablet. The CWSI was estimated for the same trees used to measure the midday stem water potential and leaf conductance. The NWSB was calculated in different ways, considering several simplifications. Firstly, NWBS was obtained using previously published equations (one or several equations throughout the season). Secondly, climate data were measured in the orchard together with the canopy temperature or using daily values from a weather station nearby. CWSI estimations using different equations were closely related (R2 = 0.95; MSE = 0.008) and one fit was considered successful. Although the differences in the values from different sources was considerable and significant, the CWSI estimation did not present major variations and the use of data from the weather station could be assumed in commercial orchards. The CWSI successfully identified water stress in Rainfed conditions, mainly when the stomata closure was detected. However, the differentiation between Control and RDI was limited.Junta de AndalucíaELSEVIERAgronomíaAGR188: Agronomía2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/149378https://doi.org/10.1016/j.agwat.2022.107729reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésAgricultural Water Management, 2022 (269) (2022 (107729)), 1 p.-9 p..P20-00492https://doi.org/10.1016/j.agwat.2022.107729info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1493782026-06-17T12:51:07Z
dc.title.none.fl_str_mv Evaluation of a simplified methodology to estimate the CWSI in olive orchards
title Evaluation of a simplified methodology to estimate the CWSI in olive orchards
spellingShingle Evaluation of a simplified methodology to estimate the CWSI in olive orchards
Sánchez Piñero, Marta
NWSB
Regulated Deficit Irrigation
Table olive
Water potential
Water relations
title_short Evaluation of a simplified methodology to estimate the CWSI in olive orchards
title_full Evaluation of a simplified methodology to estimate the CWSI in olive orchards
title_fullStr Evaluation of a simplified methodology to estimate the CWSI in olive orchards
title_full_unstemmed Evaluation of a simplified methodology to estimate the CWSI in olive orchards
title_sort Evaluation of a simplified methodology to estimate the CWSI in olive orchards
dc.creator.none.fl_str_mv Sánchez Piñero, Marta
Martín Palomo, María José
Andreu Cáceres, Luis
Moriana Elvira, Alfonso
Corell González, Mireia
author Sánchez Piñero, Marta
author_facet Sánchez Piñero, Marta
Martín Palomo, María José
Andreu Cáceres, Luis
Moriana Elvira, Alfonso
Corell González, Mireia
author_role author
author2 Martín Palomo, María José
Andreu Cáceres, Luis
Moriana Elvira, Alfonso
Corell González, Mireia
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Agronomía
AGR188: Agronomía
dc.subject.none.fl_str_mv NWSB
Regulated Deficit Irrigation
Table olive
Water potential
Water relations
topic NWSB
Regulated Deficit Irrigation
Table olive
Water potential
Water relations
description The canopy temperature is a promising methodology for deficit irrigation scheduling. This measurement is used to calculate the crop water stress index (CWSI), which needs the estimation of non-water stress baseline (NWSB). In olive orchards, NWSB changed at different times of the day and throughout the season. The aim of this work was to evaluate a simplified methodology for estimating NWSB to allow reducing costs and facilitate the CWSI estimation. The experiment was performed during two consecutive seasons (2020 and 2021) in a young superintensive density olive orchard (Olea europaea L. cv Manzanillo). Three irrigation treatments were evaluated in a completely randomized design with 6 repetitions: Control, Full Irrigated; Regulated Deficit Irrigation (RDI) with a period of water stress during pit hardening, and Rainfed. The midday stem water potential and leaf conductance were measured every week during the irrigation season. The canopy temperature was measured with a low-cost thermal camera attached to a tablet. The CWSI was estimated for the same trees used to measure the midday stem water potential and leaf conductance. The NWSB was calculated in different ways, considering several simplifications. Firstly, NWBS was obtained using previously published equations (one or several equations throughout the season). Secondly, climate data were measured in the orchard together with the canopy temperature or using daily values from a weather station nearby. CWSI estimations using different equations were closely related (R2 = 0.95; MSE = 0.008) and one fit was considered successful. Although the differences in the values from different sources was considerable and significant, the CWSI estimation did not present major variations and the use of data from the weather station could be assumed in commercial orchards. The CWSI successfully identified water stress in Rainfed conditions, mainly when the stomata closure was detected. However, the differentiation between Control and RDI was limited.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/149378
https://doi.org/10.1016/j.agwat.2022.107729
url https://hdl.handle.net/11441/149378
https://doi.org/10.1016/j.agwat.2022.107729
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Agricultural Water Management, 2022 (269) (2022 (107729)), 1 p.-9 p..
P20-00492
https://doi.org/10.1016/j.agwat.2022.107729
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv ELSEVIER
publisher.none.fl_str_mv ELSEVIER
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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