Two-dimensional spatial distribution modeling of sprinkler irrigation.

Detalhes bibliográficos
Autor(a) principal: BORGES JÚNIOR, J. C. F.
Data de Publicação: 2021
Outros Autores: ANDRADE, C. de L. T. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133925
https://doi.org/10.1590/0034-737X2021680400
Resumo: Irrigation can provide significant agronomic and financial returns on agricultural activity. The maximization of the benefits obtained from irrigation depends, among other factors, on the water use efficiency, which is intrinsically related to application uniformity. For the sprinkler method, the irrigation uniformity assessment is based on results of labor-intensive field tests in which the two-dimensional water distribution pattern is measured in a grid of catch cans. The aim of this study was to evaluate a simplified methodology for determining the irrigation uniformity using water depth distribution data of a single sprinkler head in operation, positioned at the intersection of two diagonal alignments containing regularly spaced catch cans. Three methods to simulate the spatial water distribution on the alignments were evaluated: linear interpolation (LI), cubic spline (SC) and second-degree polynomial regression (PR). Each of these methods were associated with a procedure to calculate the two-dimensional spatial water distribution. The adequacy of the LI and SC modeling methods was verified by using the Wilcoxon-Mann-Whitney test (p-value < 0.05) applied to the data of the field tests. Mean values of the coefficient of efficiency equals to 0.771 and 0.785 were obtained for the LI and SC methods, respectively. The PR method underperformed the others
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spelling Two-dimensional spatial distribution modeling of sprinkler irrigation.Irrigation efficiencyUniformity coefficientCoefficient of efficiencyEficiência de irrigaçãoCoeficiente de uniformidadeCoeficiente de eficiênciaIrrigaçãoIrrigationIrrigation can provide significant agronomic and financial returns on agricultural activity. The maximization of the benefits obtained from irrigation depends, among other factors, on the water use efficiency, which is intrinsically related to application uniformity. For the sprinkler method, the irrigation uniformity assessment is based on results of labor-intensive field tests in which the two-dimensional water distribution pattern is measured in a grid of catch cans. The aim of this study was to evaluate a simplified methodology for determining the irrigation uniformity using water depth distribution data of a single sprinkler head in operation, positioned at the intersection of two diagonal alignments containing regularly spaced catch cans. Three methods to simulate the spatial water distribution on the alignments were evaluated: linear interpolation (LI), cubic spline (SC) and second-degree polynomial regression (PR). Each of these methods were associated with a procedure to calculate the two-dimensional spatial water distribution. The adequacy of the LI and SC modeling methods was verified by using the Wilcoxon-Mann-Whitney test (p-value < 0.05) applied to the data of the field tests. Mean values of the coefficient of efficiency equals to 0.771 and 0.785 were obtained for the LI and SC methods, respectively. The PR method underperformed the othersJOÃO CARLOS FERREIRA BORGES JÚNIOR, Universidade Federal de São João del-Rei; CAMILO DE LELIS TEIXEIRA DE ANDRADE, CNPMS.BORGES JÚNIOR, J. C. F.ANDRADE, C. de L. T. de2021-08-31T02:06:37Z2021-08-31T02:06:37Z2021-08-302021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Ceres, v. 68, n.4, p. 257-266, 2021.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133925https://doi.org/10.1590/0034-737X2021680400enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2021-08-31T02:06:47Zoai:www.alice.cnptia.embrapa.br:doc/1133925Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542021-08-31T02:06:47falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542021-08-31T02:06:47Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Two-dimensional spatial distribution modeling of sprinkler irrigation.
title Two-dimensional spatial distribution modeling of sprinkler irrigation.
spellingShingle Two-dimensional spatial distribution modeling of sprinkler irrigation.
BORGES JÚNIOR, J. C. F.
Irrigation efficiency
Uniformity coefficient
Coefficient of efficiency
Eficiência de irrigação
Coeficiente de uniformidade
Coeficiente de eficiência
Irrigação
Irrigation
title_short Two-dimensional spatial distribution modeling of sprinkler irrigation.
title_full Two-dimensional spatial distribution modeling of sprinkler irrigation.
title_fullStr Two-dimensional spatial distribution modeling of sprinkler irrigation.
title_full_unstemmed Two-dimensional spatial distribution modeling of sprinkler irrigation.
title_sort Two-dimensional spatial distribution modeling of sprinkler irrigation.
author BORGES JÚNIOR, J. C. F.
author_facet BORGES JÚNIOR, J. C. F.
ANDRADE, C. de L. T. de
author_role author
author2 ANDRADE, C. de L. T. de
author2_role author
dc.contributor.none.fl_str_mv JOÃO CARLOS FERREIRA BORGES JÚNIOR, Universidade Federal de São João del-Rei; CAMILO DE LELIS TEIXEIRA DE ANDRADE, CNPMS.
dc.contributor.author.fl_str_mv BORGES JÚNIOR, J. C. F.
ANDRADE, C. de L. T. de
dc.subject.por.fl_str_mv Irrigation efficiency
Uniformity coefficient
Coefficient of efficiency
Eficiência de irrigação
Coeficiente de uniformidade
Coeficiente de eficiência
Irrigação
Irrigation
topic Irrigation efficiency
Uniformity coefficient
Coefficient of efficiency
Eficiência de irrigação
Coeficiente de uniformidade
Coeficiente de eficiência
Irrigação
Irrigation
description Irrigation can provide significant agronomic and financial returns on agricultural activity. The maximization of the benefits obtained from irrigation depends, among other factors, on the water use efficiency, which is intrinsically related to application uniformity. For the sprinkler method, the irrigation uniformity assessment is based on results of labor-intensive field tests in which the two-dimensional water distribution pattern is measured in a grid of catch cans. The aim of this study was to evaluate a simplified methodology for determining the irrigation uniformity using water depth distribution data of a single sprinkler head in operation, positioned at the intersection of two diagonal alignments containing regularly spaced catch cans. Three methods to simulate the spatial water distribution on the alignments were evaluated: linear interpolation (LI), cubic spline (SC) and second-degree polynomial regression (PR). Each of these methods were associated with a procedure to calculate the two-dimensional spatial water distribution. The adequacy of the LI and SC modeling methods was verified by using the Wilcoxon-Mann-Whitney test (p-value < 0.05) applied to the data of the field tests. Mean values of the coefficient of efficiency equals to 0.771 and 0.785 were obtained for the LI and SC methods, respectively. The PR method underperformed the others
publishDate 2021
dc.date.none.fl_str_mv 2021-08-31T02:06:37Z
2021-08-31T02:06:37Z
2021-08-30
2021
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
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format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Revista Ceres, v. 68, n.4, p. 257-266, 2021.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133925
https://doi.org/10.1590/0034-737X2021680400
identifier_str_mv Revista Ceres, v. 68, n.4, p. 257-266, 2021.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133925
https://doi.org/10.1590/0034-737X2021680400
dc.language.iso.fl_str_mv eng
language eng
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dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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