Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation

Detalhes bibliográficos
Autor(a) principal: Angelotti Netto, Antonio
Data de Publicação: 2005
Outros Autores: Fernandes, Edemo João
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/7028
Resumo: The understanding and the prediction of the water flow in the soil are essential for its agricultural and environmental management. This work aimed to determine and to compare the hydraulic conductivity obtained by the instantaneous profile method in the field in a soil kept in fallow for six years and other one with intensive cultivation for the same period. The technique of Hillel was used to obtain the hydraulic conductivity. The water content in Red Latosol (Rhodic Eutrudox) was determined by the conversion of the values of matric potential in water content according to the van Genuchten equation. The matric potential determination was accomplished in the depths of 0.2, 0.4, 0.6, 0.8 and 1.0 m, during 24 days. The greatest values of hydraulic conductivity to the depth of 1.0 m were achieved under fallow conditions. The parameter saturated hydraulic conductivity was responsible for the greatest values of the function K(q) determined in all depths, independently of the water content of the soil used as reference.
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spelling Hydraulic conductivity of a Red Latosol under fallow and intensive cultivationCondutividade hidráulica de um Latossolo Vermelho em pousio e cultivo intensivoinstantaneous profile; soil managemen; tensiometers; soil water; retention curveperfil instantâneo; manejo de solo; tensiômetros; água no solo; curva de retenção The understanding and the prediction of the water flow in the soil are essential for its agricultural and environmental management. This work aimed to determine and to compare the hydraulic conductivity obtained by the instantaneous profile method in the field in a soil kept in fallow for six years and other one with intensive cultivation for the same period. The technique of Hillel was used to obtain the hydraulic conductivity. The water content in Red Latosol (Rhodic Eutrudox) was determined by the conversion of the values of matric potential in water content according to the van Genuchten equation. The matric potential determination was accomplished in the depths of 0.2, 0.4, 0.6, 0.8 and 1.0 m, during 24 days. The greatest values of hydraulic conductivity to the depth of 1.0 m were achieved under fallow conditions. The parameter saturated hydraulic conductivity was responsible for the greatest values of the function K(q) determined in all depths, independently of the water content of the soil used as reference.O entendimento e a predição do fluxo de água no solo são essenciais ao manejo agrícola e ambiental. O objetivo deste trabalho foi determinar e comparar a condutividade hidráulica obtida com a técnica do perfil instantâneo no campo, em um solo mantido em pousio por seis anos e outro cultivado intensivamente por igual período. A técnica empregada para a obtenção da condutividade hidráulica foi a de Hillel. A quantidade de água no Latossolo Vermelho foi determinada convertendo-se os valores de potencial matricial da água no solo em umidade volumétrica, segundo a equação de van Genuchten. As determinações de potencial matricial foram realizadas nas profundidades de 0,2, 0,4, 0,6, 0,8 e 1,0 m, ao longo de 24 dias. Os maiores valores de condutividade hidráulica até a profundidade de 1,0 m ocorreram no solo em pousio. O parâmetro condutividade hidráulica saturada é o responsável pelos maiores valores da função K(q) determinada em todas as profundidades, independentemente da umidade do solo utilizada como referência.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraAngelotti Netto, AntonioFernandes, Edemo João2005-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/7028Pesquisa Agropecuaria Brasileira; v.40, n.8, ago. 2005; 787-802Pesquisa Agropecuária Brasileira; v.40, n.8, ago. 2005; 787-8021678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/7028/4076info:eu-repo/semantics/openAccess2011-08-29T13:31:16Zoai:ojs.seer.sct.embrapa.br:article/7028Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2011-08-29T13:31:16Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation
Condutividade hidráulica de um Latossolo Vermelho em pousio e cultivo intensivo
title Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation
spellingShingle Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation
Angelotti Netto, Antonio
instantaneous profile; soil managemen; tensiometers; soil water; retention curve
perfil instantâneo; manejo de solo; tensiômetros; água no solo; curva de retenção
title_short Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation
title_full Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation
title_fullStr Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation
title_full_unstemmed Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation
title_sort Hydraulic conductivity of a Red Latosol under fallow and intensive cultivation
author Angelotti Netto, Antonio
author_facet Angelotti Netto, Antonio
Fernandes, Edemo João
author_role author
author2 Fernandes, Edemo João
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Angelotti Netto, Antonio
Fernandes, Edemo João
dc.subject.por.fl_str_mv instantaneous profile; soil managemen; tensiometers; soil water; retention curve
perfil instantâneo; manejo de solo; tensiômetros; água no solo; curva de retenção
topic instantaneous profile; soil managemen; tensiometers; soil water; retention curve
perfil instantâneo; manejo de solo; tensiômetros; água no solo; curva de retenção
description The understanding and the prediction of the water flow in the soil are essential for its agricultural and environmental management. This work aimed to determine and to compare the hydraulic conductivity obtained by the instantaneous profile method in the field in a soil kept in fallow for six years and other one with intensive cultivation for the same period. The technique of Hillel was used to obtain the hydraulic conductivity. The water content in Red Latosol (Rhodic Eutrudox) was determined by the conversion of the values of matric potential in water content according to the van Genuchten equation. The matric potential determination was accomplished in the depths of 0.2, 0.4, 0.6, 0.8 and 1.0 m, during 24 days. The greatest values of hydraulic conductivity to the depth of 1.0 m were achieved under fallow conditions. The parameter saturated hydraulic conductivity was responsible for the greatest values of the function K(q) determined in all depths, independently of the water content of the soil used as reference.
publishDate 2005
dc.date.none.fl_str_mv 2005-08-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/7028
url https://seer.sct.embrapa.br/index.php/pab/article/view/7028
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/7028/4076
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.40, n.8, ago. 2005; 787-802
Pesquisa Agropecuária Brasileira; v.40, n.8, ago. 2005; 787-802
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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