Reduction of exchangeable calcium and magnesium in soil with increasing pH

Detalhes bibliográficos
Autor(a) principal: Miyazawa,Mário
Data de Publicação: 2001
Outros Autores: Pavan,Marcos A., Ziglio,Cláudio O., Franchini,Júlio C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Archives of Biology and Technology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000200007
Resumo: A laboratory study was conducted with soil samples and synthetic solutions to investigate possible mechanisms related with reduction in KCl exchangeable Ca and Mg with increasing pH. Increasing soil pH over 5.3 with CaCO3 added to the soil and with NaOH solution added to soil/KCl suspension increased adsorptions of Ca and Mg. The reduction of Mg was greater than Ca and was related to the concentration of soil exchangeable Al. The decreases of soluble Ca and Mg following addition of Al in synthetic solution were at pH > 7.5. The isomorphic coprecipitation reaction with Al compounds may be the most possible mechanism responsible for the decrease of exchangeable Ca and Mg with increasing pH. Possible chemical reactions are presented.
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spelling Reduction of exchangeable calcium and magnesium in soil with increasing pHCoprecipitationaluminumlimingacid soilsA laboratory study was conducted with soil samples and synthetic solutions to investigate possible mechanisms related with reduction in KCl exchangeable Ca and Mg with increasing pH. Increasing soil pH over 5.3 with CaCO3 added to the soil and with NaOH solution added to soil/KCl suspension increased adsorptions of Ca and Mg. The reduction of Mg was greater than Ca and was related to the concentration of soil exchangeable Al. The decreases of soluble Ca and Mg following addition of Al in synthetic solution were at pH > 7.5. The isomorphic coprecipitation reaction with Al compounds may be the most possible mechanism responsible for the decrease of exchangeable Ca and Mg with increasing pH. Possible chemical reactions are presented.Instituto de Tecnologia do Paraná - Tecpar2001-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000200007Brazilian Archives of Biology and Technology v.44 n.2 2001reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/S1516-89132001000200007info:eu-repo/semantics/openAccessMiyazawa,MárioPavan,Marcos A.Ziglio,Cláudio O.Franchini,Júlio C.eng2001-11-07T00:00:00Zoai:scielo:S1516-89132001000200007Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2001-11-07T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false
dc.title.none.fl_str_mv Reduction of exchangeable calcium and magnesium in soil with increasing pH
title Reduction of exchangeable calcium and magnesium in soil with increasing pH
spellingShingle Reduction of exchangeable calcium and magnesium in soil with increasing pH
Miyazawa,Mário
Coprecipitation
aluminum
liming
acid soils
title_short Reduction of exchangeable calcium and magnesium in soil with increasing pH
title_full Reduction of exchangeable calcium and magnesium in soil with increasing pH
title_fullStr Reduction of exchangeable calcium and magnesium in soil with increasing pH
title_full_unstemmed Reduction of exchangeable calcium and magnesium in soil with increasing pH
title_sort Reduction of exchangeable calcium and magnesium in soil with increasing pH
author Miyazawa,Mário
author_facet Miyazawa,Mário
Pavan,Marcos A.
Ziglio,Cláudio O.
Franchini,Júlio C.
author_role author
author2 Pavan,Marcos A.
Ziglio,Cláudio O.
Franchini,Júlio C.
author2_role author
author
author
dc.contributor.author.fl_str_mv Miyazawa,Mário
Pavan,Marcos A.
Ziglio,Cláudio O.
Franchini,Júlio C.
dc.subject.por.fl_str_mv Coprecipitation
aluminum
liming
acid soils
topic Coprecipitation
aluminum
liming
acid soils
description A laboratory study was conducted with soil samples and synthetic solutions to investigate possible mechanisms related with reduction in KCl exchangeable Ca and Mg with increasing pH. Increasing soil pH over 5.3 with CaCO3 added to the soil and with NaOH solution added to soil/KCl suspension increased adsorptions of Ca and Mg. The reduction of Mg was greater than Ca and was related to the concentration of soil exchangeable Al. The decreases of soluble Ca and Mg following addition of Al in synthetic solution were at pH > 7.5. The isomorphic coprecipitation reaction with Al compounds may be the most possible mechanism responsible for the decrease of exchangeable Ca and Mg with increasing pH. Possible chemical reactions are presented.
publishDate 2001
dc.date.none.fl_str_mv 2001-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000200007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000200007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-89132001000200007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
dc.source.none.fl_str_mv Brazilian Archives of Biology and Technology v.44 n.2 2001
reponame:Brazilian Archives of Biology and Technology
instname:Instituto de Tecnologia do Paraná (Tecpar)
instacron:TECPAR
instname_str Instituto de Tecnologia do Paraná (Tecpar)
instacron_str TECPAR
institution TECPAR
reponame_str Brazilian Archives of Biology and Technology
collection Brazilian Archives of Biology and Technology
repository.name.fl_str_mv Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)
repository.mail.fl_str_mv babt@tecpar.br||babt@tecpar.br
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