Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration

Detalhes bibliográficos
Autor(a) principal: Paes, Jefferson Luiz de Aguiar
Data de Publicação: 2014
Outros Autores: Ruiz, Hugo Alberto, Fernandes, Raphael Bragança Alves, Freire, Maria Betânia Galvão dos Santos, Barros, Maria de Fatima Cavalcanti, Rocha, Genelício Crusóe
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://dx.doi.org/10.1590/0034-737X201461050015
http://www.locus.ufv.br/handle/123456789/18055
Resumo: Hydraulic conductivity is determined in laboratory assays to estimate the flow of water in saturated soils. However, the results of this analysis, when using distilled or deionized water, may not correspond to field conditions in soils with high concentrations of soluble salts. This study therefore set out to determine the hydraulic conductivity in laboratory conditions using solutions of different electrical conductivities in six soils representative of the State of Pernambuco, with the exchangeable sodium percentage adjusted in the range of 5-30%. The results showed an increase in hydraulic conductivity with both decreasing exchangeable sodium percentage and increasing electrical conductivity in the solution. The response to the treatments was more pronounced in soils with higher proportion of more active clays. Determination of hydraulic conductivity in laboratory is routinely performed with deionized or distilled water. However, in salt affected soils, these determinations should be carried out using solutions of electrical conductivity different from 0 dS m-1, with values close to those determined in the saturation extracts.
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spelling Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentrationSaline soilsSaline-sodic soilsExchangeable-sodium-percentageSoil solution electrical conductivityHydraulic conductivity is determined in laboratory assays to estimate the flow of water in saturated soils. However, the results of this analysis, when using distilled or deionized water, may not correspond to field conditions in soils with high concentrations of soluble salts. This study therefore set out to determine the hydraulic conductivity in laboratory conditions using solutions of different electrical conductivities in six soils representative of the State of Pernambuco, with the exchangeable sodium percentage adjusted in the range of 5-30%. The results showed an increase in hydraulic conductivity with both decreasing exchangeable sodium percentage and increasing electrical conductivity in the solution. The response to the treatments was more pronounced in soils with higher proportion of more active clays. Determination of hydraulic conductivity in laboratory is routinely performed with deionized or distilled water. However, in salt affected soils, these determinations should be carried out using solutions of electrical conductivity different from 0 dS m-1, with values close to those determined in the saturation extracts.Para estimar o movimento de água no solo, determina-se, em laboratório, a condutividade hidráulica em meio saturado. Porém, os resultados dessa análise, ao se utilizar água destilada ou deionizada, podem não corresponder às condições de campo em solos que apresentem concentrações elevadas de sais solúveis. Por essa razão, determinou-se, em laboratório, utilizando-se soluções de trabalho de diferentes condutividades elétricas, a condutividade hidráulica de seis solos representativos do Estado de Pernambuco, com percentagem de saturação de sódio ajustada no intervalo de 5 a 30%. Os resultados evidenciaram que houve incremento nos valores de condutividade hidráulica, diretamente relacionado com a diminuição da percentagem de saturação de sódio e com o aumento da condutividade elétrica na solução de trabalho. A resposta aos tratamentos foi mais acentuada nos solos com maiores proporções de argilas mais ativas. As determinações de condutividade hidráulica são realizadas com água deionizada ou destilada. No entanto, para solos afetados por sais, conclui-se que as análises deveriam ser realizadas com soluções com condutividades elétricas diferentes de 0 dS m-1, utilizando-se valores próximos aos do extrato da pasta de saturação.Revista Ceres2018-03-05T13:33:52Z2018-03-05T13:33:52Z2014-02-26info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf0034737Xhttp://dx.doi.org/10.1590/0034-737X201461050015http://www.locus.ufv.br/handle/123456789/18055engv. 61, n. 5, p. 715-722, set/out 2014Paes, Jefferson Luiz de AguiarRuiz, Hugo AlbertoFernandes, Raphael Bragança AlvesFreire, Maria Betânia Galvão dos SantosBarros, Maria de Fatima CavalcantiRocha, Genelício Crusóeinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T07:16:09Zoai:locus.ufv.br:123456789/18055Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T07:16:09LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration
title Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration
spellingShingle Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration
Paes, Jefferson Luiz de Aguiar
Saline soils
Saline-sodic soils
Exchangeable-sodium-percentage
Soil solution electrical conductivity
title_short Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration
title_full Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration
title_fullStr Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration
title_full_unstemmed Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration
title_sort Hydraulic conductivity in response to exchangeable sodium percentage and solution salt concentration
author Paes, Jefferson Luiz de Aguiar
author_facet Paes, Jefferson Luiz de Aguiar
Ruiz, Hugo Alberto
Fernandes, Raphael Bragança Alves
Freire, Maria Betânia Galvão dos Santos
Barros, Maria de Fatima Cavalcanti
Rocha, Genelício Crusóe
author_role author
author2 Ruiz, Hugo Alberto
Fernandes, Raphael Bragança Alves
Freire, Maria Betânia Galvão dos Santos
Barros, Maria de Fatima Cavalcanti
Rocha, Genelício Crusóe
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Paes, Jefferson Luiz de Aguiar
Ruiz, Hugo Alberto
Fernandes, Raphael Bragança Alves
Freire, Maria Betânia Galvão dos Santos
Barros, Maria de Fatima Cavalcanti
Rocha, Genelício Crusóe
dc.subject.por.fl_str_mv Saline soils
Saline-sodic soils
Exchangeable-sodium-percentage
Soil solution electrical conductivity
topic Saline soils
Saline-sodic soils
Exchangeable-sodium-percentage
Soil solution electrical conductivity
description Hydraulic conductivity is determined in laboratory assays to estimate the flow of water in saturated soils. However, the results of this analysis, when using distilled or deionized water, may not correspond to field conditions in soils with high concentrations of soluble salts. This study therefore set out to determine the hydraulic conductivity in laboratory conditions using solutions of different electrical conductivities in six soils representative of the State of Pernambuco, with the exchangeable sodium percentage adjusted in the range of 5-30%. The results showed an increase in hydraulic conductivity with both decreasing exchangeable sodium percentage and increasing electrical conductivity in the solution. The response to the treatments was more pronounced in soils with higher proportion of more active clays. Determination of hydraulic conductivity in laboratory is routinely performed with deionized or distilled water. However, in salt affected soils, these determinations should be carried out using solutions of electrical conductivity different from 0 dS m-1, with values close to those determined in the saturation extracts.
publishDate 2014
dc.date.none.fl_str_mv 2014-02-26
2018-03-05T13:33:52Z
2018-03-05T13:33:52Z
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 0034737X
http://dx.doi.org/10.1590/0034-737X201461050015
http://www.locus.ufv.br/handle/123456789/18055
identifier_str_mv 0034737X
url http://dx.doi.org/10.1590/0034-737X201461050015
http://www.locus.ufv.br/handle/123456789/18055
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv v. 61, n. 5, p. 715-722, set/out 2014
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Revista Ceres
publisher.none.fl_str_mv Revista Ceres
dc.source.none.fl_str_mv reponame:LOCUS Repositório Institucional da UFV
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str LOCUS Repositório Institucional da UFV
collection LOCUS Repositório Institucional da UFV
repository.name.fl_str_mv LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv fabiojreis@ufv.br
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