Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.15809/irriga.2019v24n3p486-499 http://hdl.handle.net/11449/228747 |
Resumo: | Evapotranspiration measurement of a given locality is very relevant for the rational use of water in agricultural systems. With this measure, it is possible to quantify with greater precision the water requirement of crops. The main objective of this work was to develop a weighing lysimeter to measure reference evapotranspiration. This equipment is composed of a concrete structure in circular format, having a visiting well with a tank with volumetric capacity of 1.50 m³. The weighing system was designed on the basis of a reinforced support tripod with carbon steel frame and three load cells affixed. Load cell measurements were stored using a Campbell Scientific® 21-X datalogger. The soil moisture maintenance, when in the field capacity, was done according to the readings obtained from the datalogger in conjunction with tensiometers / vacuometers installed to a depth of 0.20 m inside and outside of the tank, and a three-day interval of irrigation was defined. The methodology presented in this work and used in the construction, automation and calibration processes was adequate, providing a coefficient of determination (R²) of 0.9998 proving that the equipment can provide accurate measurements. As a practical result for the study environment, the average evapotranspiration value of 3.5 mm/day is a good indicative of the equipment functionality. |
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Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell systemConstrução de lisímetro de pesagem de seção circular para a medição da evapotranspiração de referência (Et0): sistema com três células de cargaIrrigationwater fluxWater requirementEvapotranspiration measurement of a given locality is very relevant for the rational use of water in agricultural systems. With this measure, it is possible to quantify with greater precision the water requirement of crops. The main objective of this work was to develop a weighing lysimeter to measure reference evapotranspiration. This equipment is composed of a concrete structure in circular format, having a visiting well with a tank with volumetric capacity of 1.50 m³. The weighing system was designed on the basis of a reinforced support tripod with carbon steel frame and three load cells affixed. Load cell measurements were stored using a Campbell Scientific® 21-X datalogger. The soil moisture maintenance, when in the field capacity, was done according to the readings obtained from the datalogger in conjunction with tensiometers / vacuometers installed to a depth of 0.20 m inside and outside of the tank, and a three-day interval of irrigation was defined. The methodology presented in this work and used in the construction, automation and calibration processes was adequate, providing a coefficient of determination (R²) of 0.9998 proving that the equipment can provide accurate measurements. As a practical result for the study environment, the average evapotranspiration value of 3.5 mm/day is a good indicative of the equipment functionality.Universidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências Agronômicas Fazenda Experimental Lageado, Av. Universitária, 3780, Altos do ParaísoDpto. de Bioprocessos e Biotecnologia Universidade Estadual Paulista “Júlio de Mesquita Filho” – Faculdade de Ciências Agronômicas Fazenda Experimental Lageado, Av. Universitária, 3780, Altos do ParaísoDpto. de Engenharia Rural Universidade Estadual Paulista “Júlio de Mesquita Filho” – Faculdade de Ciências Agronômicas Fazenda Experimental Lageado, Av. Universitária, 3780, Altos do ParaísoUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências Agronômicas Fazenda Experimental Lageado, Av. Universitária, 3780, Altos do ParaísoDpto. de Bioprocessos e Biotecnologia Universidade Estadual Paulista “Júlio de Mesquita Filho” – Faculdade de Ciências Agronômicas Fazenda Experimental Lageado, Av. Universitária, 3780, Altos do ParaísoDpto. de Engenharia Rural Universidade Estadual Paulista “Júlio de Mesquita Filho” – Faculdade de Ciências Agronômicas Fazenda Experimental Lageado, Av. Universitária, 3780, Altos do ParaísoUniversidade Estadual Paulista (UNESP)Gomes Junior, Daniel Gonçalves [UNESP]Dal Pai, Alexandre [UNESP]Dal Pai, Enzo [UNESP]2022-04-29T08:28:29Z2022-04-29T08:28:29Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article486-499http://dx.doi.org/10.15809/irriga.2019v24n3p486-499IRRIGA, v. 24, n. 3, p. 486-499, 2019.1808-37651413-7895http://hdl.handle.net/11449/22874710.15809/irriga.2019v24n3p486-4992-s2.0-85075547102Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporIRRIGAinfo:eu-repo/semantics/openAccess2024-04-30T14:02:24Zoai:repositorio.unesp.br:11449/228747Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:50:13.141964Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system Construção de lisímetro de pesagem de seção circular para a medição da evapotranspiração de referência (Et0): sistema com três células de carga |
title |
Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system |
spellingShingle |
Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system Gomes Junior, Daniel Gonçalves [UNESP] Irrigation water flux Water requirement |
title_short |
Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system |
title_full |
Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system |
title_fullStr |
Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system |
title_full_unstemmed |
Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system |
title_sort |
Construction of a circular section for weighing lysimeter for the measurement of reference evapotranspiration (Et0): Three load cell system |
author |
Gomes Junior, Daniel Gonçalves [UNESP] |
author_facet |
Gomes Junior, Daniel Gonçalves [UNESP] Dal Pai, Alexandre [UNESP] Dal Pai, Enzo [UNESP] |
author_role |
author |
author2 |
Dal Pai, Alexandre [UNESP] Dal Pai, Enzo [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Gomes Junior, Daniel Gonçalves [UNESP] Dal Pai, Alexandre [UNESP] Dal Pai, Enzo [UNESP] |
dc.subject.por.fl_str_mv |
Irrigation water flux Water requirement |
topic |
Irrigation water flux Water requirement |
description |
Evapotranspiration measurement of a given locality is very relevant for the rational use of water in agricultural systems. With this measure, it is possible to quantify with greater precision the water requirement of crops. The main objective of this work was to develop a weighing lysimeter to measure reference evapotranspiration. This equipment is composed of a concrete structure in circular format, having a visiting well with a tank with volumetric capacity of 1.50 m³. The weighing system was designed on the basis of a reinforced support tripod with carbon steel frame and three load cells affixed. Load cell measurements were stored using a Campbell Scientific® 21-X datalogger. The soil moisture maintenance, when in the field capacity, was done according to the readings obtained from the datalogger in conjunction with tensiometers / vacuometers installed to a depth of 0.20 m inside and outside of the tank, and a three-day interval of irrigation was defined. The methodology presented in this work and used in the construction, automation and calibration processes was adequate, providing a coefficient of determination (R²) of 0.9998 proving that the equipment can provide accurate measurements. As a practical result for the study environment, the average evapotranspiration value of 3.5 mm/day is a good indicative of the equipment functionality. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2022-04-29T08:28:29Z 2022-04-29T08:28:29Z |
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.2019v24n3p486-499 IRRIGA, v. 24, n. 3, p. 486-499, 2019. 1808-3765 1413-7895 http://hdl.handle.net/11449/228747 10.15809/irriga.2019v24n3p486-499 2-s2.0-85075547102 |
url |
http://dx.doi.org/10.15809/irriga.2019v24n3p486-499 http://hdl.handle.net/11449/228747 |
identifier_str_mv |
IRRIGA, v. 24, n. 3, p. 486-499, 2019. 1808-3765 1413-7895 10.15809/irriga.2019v24n3p486-499 2-s2.0-85075547102 |
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 |
486-499 |
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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1808129364582203392 |