Two evapotranspiration reference estimation methods and water stress index in irrigated onion

Detalhes bibliográficos
Autor(a) principal: De Oliveira, Paulo José Desidério [UNESP]
Data de Publicação: 2019
Outros Autores: Turco, Jose Eduardo Pitelli [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.15809/irriga.2019v24n2p352-366
http://hdl.handle.net/11449/199497
Resumo: The objective of this work was to evaluate the effect of two methods to calculate the reference evapotranspiration and the determination of water stress index of the crop on the production of onion bulbs irrigated by sprinkling. The experiment was conducted from April to September 2017, at Santo Antônio site, Monte Alto municipality, São Paulo, Brazil. The experimental design was in blocks with repetitions, consisting of two treatments: T1 and T2, with irrigations based on the reference evapotranspiration by Hargreaves method and Penman-Monteith method, respectively. Each treatment was divided into four blocks for soil water stress measurements and each block with four replicates for measurements of water stress index of the crop. With the results it was concluded that in T1, a higher water volume was applied, but there was no significant difference in productivity. The variability of water stress indices in all blocks was 1.9 ° C to 2.4 ° C, with higher values prevailing in T2, where a lower volume of water was applied. For the whole area, the water stress index at 1.9 ° C corresponded to 50% of the available water capacity in the soil.
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spelling Two evapotranspiration reference estimation methods and water stress index in irrigated onionDois métodos de estimativa da evapotranspiração de referência e índices de estresse hídrico em cebola irrigadaInfrared thermometerWater and soilWater deficitThe objective of this work was to evaluate the effect of two methods to calculate the reference evapotranspiration and the determination of water stress index of the crop on the production of onion bulbs irrigated by sprinkling. The experiment was conducted from April to September 2017, at Santo Antônio site, Monte Alto municipality, São Paulo, Brazil. The experimental design was in blocks with repetitions, consisting of two treatments: T1 and T2, with irrigations based on the reference evapotranspiration by Hargreaves method and Penman-Monteith method, respectively. Each treatment was divided into four blocks for soil water stress measurements and each block with four replicates for measurements of water stress index of the crop. With the results it was concluded that in T1, a higher water volume was applied, but there was no significant difference in productivity. The variability of water stress indices in all blocks was 1.9 ° C to 2.4 ° C, with higher values prevailing in T2, where a lower volume of water was applied. For the whole area, the water stress index at 1.9 ° C corresponded to 50% of the available water capacity in the soil.FCAV/UNESP, Campus de Jaboticabal, Via de acesso Prof. Paulo Donato Castellane, Km 5Departamento de Engenharia Rural FCAV/UNESP, Campus de Jaboticabal, Via de acesso Prof. Paulo Donato Castellane, Km 5FCAV/UNESP, Campus de Jaboticabal, Via de acesso Prof. Paulo Donato Castellane, Km 5Departamento de Engenharia Rural FCAV/UNESP, Campus de Jaboticabal, Via de acesso Prof. Paulo Donato Castellane, Km 5Universidade Estadual Paulista (Unesp)De Oliveira, Paulo José Desidério [UNESP]Turco, Jose Eduardo Pitelli [UNESP]2020-12-12T01:41:27Z2020-12-12T01:41:27Z2019-06-27info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article352-366http://dx.doi.org/10.15809/irriga.2019v24n2p352-366IRRIGA, v. 24, n. 2, p. 352-366, 2019.1808-37651413-7895http://hdl.handle.net/11449/19949710.15809/irriga.2019v24n2p352-3662-s2.0-85073377163Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporIRRIGAinfo:eu-repo/semantics/openAccess2024-06-06T15:18:29Zoai:repositorio.unesp.br:11449/199497Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:48:27.151274Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Two evapotranspiration reference estimation methods and water stress index in irrigated onion
Dois métodos de estimativa da evapotranspiração de referência e índices de estresse hídrico em cebola irrigada
title Two evapotranspiration reference estimation methods and water stress index in irrigated onion
spellingShingle Two evapotranspiration reference estimation methods and water stress index in irrigated onion
De Oliveira, Paulo José Desidério [UNESP]
Infrared thermometer
Water and soil
Water deficit
title_short Two evapotranspiration reference estimation methods and water stress index in irrigated onion
title_full Two evapotranspiration reference estimation methods and water stress index in irrigated onion
title_fullStr Two evapotranspiration reference estimation methods and water stress index in irrigated onion
title_full_unstemmed Two evapotranspiration reference estimation methods and water stress index in irrigated onion
title_sort Two evapotranspiration reference estimation methods and water stress index in irrigated onion
author De Oliveira, Paulo José Desidério [UNESP]
author_facet De Oliveira, Paulo José Desidério [UNESP]
Turco, Jose Eduardo Pitelli [UNESP]
author_role author
author2 Turco, Jose Eduardo Pitelli [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv De Oliveira, Paulo José Desidério [UNESP]
Turco, Jose Eduardo Pitelli [UNESP]
dc.subject.por.fl_str_mv Infrared thermometer
Water and soil
Water deficit
topic Infrared thermometer
Water and soil
Water deficit
description The objective of this work was to evaluate the effect of two methods to calculate the reference evapotranspiration and the determination of water stress index of the crop on the production of onion bulbs irrigated by sprinkling. The experiment was conducted from April to September 2017, at Santo Antônio site, Monte Alto municipality, São Paulo, Brazil. The experimental design was in blocks with repetitions, consisting of two treatments: T1 and T2, with irrigations based on the reference evapotranspiration by Hargreaves method and Penman-Monteith method, respectively. Each treatment was divided into four blocks for soil water stress measurements and each block with four replicates for measurements of water stress index of the crop. With the results it was concluded that in T1, a higher water volume was applied, but there was no significant difference in productivity. The variability of water stress indices in all blocks was 1.9 ° C to 2.4 ° C, with higher values prevailing in T2, where a lower volume of water was applied. For the whole area, the water stress index at 1.9 ° C corresponded to 50% of the available water capacity in the soil.
publishDate 2019
dc.date.none.fl_str_mv 2019-06-27
2020-12-12T01:41:27Z
2020-12-12T01:41:27Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.15809/irriga.2019v24n2p352-366
IRRIGA, v. 24, n. 2, p. 352-366, 2019.
1808-3765
1413-7895
http://hdl.handle.net/11449/199497
10.15809/irriga.2019v24n2p352-366
2-s2.0-85073377163
url http://dx.doi.org/10.15809/irriga.2019v24n2p352-366
http://hdl.handle.net/11449/199497
identifier_str_mv IRRIGA, v. 24, n. 2, p. 352-366, 2019.
1808-3765
1413-7895
10.15809/irriga.2019v24n2p352-366
2-s2.0-85073377163
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv IRRIGA
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 352-366
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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