Potential acidity estimated by SMP pH in soils of the state of Pará

Detalhes bibliográficos
Autor(a) principal: Gama,Marcos André Piedade
Data de Publicação: 2013
Outros Autores: Matos,Gilson Sergio Bastos de, Silva,George Rodrigues da, Brasil,Edilson Carvalho, Nunes,Otiniel Ferreira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Ciência do Solo (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100020
Resumo: The use of SMP pH to estimate the potential acidity (H + Al) is more practical than the method of 0.5 mol L-1 calcium acetate for routine laboratory analyses. The objective was to fit an equation to estimate the H + Al from SMP pH values of soils of the State of Pará. From various regions of the state, 177 soil samples were collected, in which the SMP pH was determined in 0.01 mol L-1 CaCl2 solution and H + Al in 0.5 mol L-1 calcium acetate and the results were related by regression analysis. The equation H + Al = 77.77 + 20.61 SMP pH - 1.435 SMP pH² (R² = 0.90) expressed the H + Al values (in cmol c dm-3) best. When the SMP pH values were used in equations referring to other regions or states in Brazil, the H +Al values were over- or underestimated. The potential acidity in soils of Pará can be estimated by the method of SMP pH.
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spelling Potential acidity estimated by SMP pH in soils of the state of ParáH + Alsoil analysisAmazonsoil fertilityThe use of SMP pH to estimate the potential acidity (H + Al) is more practical than the method of 0.5 mol L-1 calcium acetate for routine laboratory analyses. The objective was to fit an equation to estimate the H + Al from SMP pH values of soils of the State of Pará. From various regions of the state, 177 soil samples were collected, in which the SMP pH was determined in 0.01 mol L-1 CaCl2 solution and H + Al in 0.5 mol L-1 calcium acetate and the results were related by regression analysis. The equation H + Al = 77.77 + 20.61 SMP pH - 1.435 SMP pH² (R² = 0.90) expressed the H + Al values (in cmol c dm-3) best. When the SMP pH values were used in equations referring to other regions or states in Brazil, the H +Al values were over- or underestimated. The potential acidity in soils of Pará can be estimated by the method of SMP pH.Sociedade Brasileira de Ciência do Solo2013-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100020Revista Brasileira de Ciência do Solo v.37 n.1 2013reponame:Revista Brasileira de Ciência do Solo (Online)instname:Sociedade Brasileira de Ciência do Solo (SBCS)instacron:SBCS10.1590/S0100-06832013000100020info:eu-repo/semantics/openAccessGama,Marcos André PiedadeMatos,Gilson Sergio Bastos deSilva,George Rodrigues daBrasil,Edilson CarvalhoNunes,Otiniel Ferreiraeng2013-03-14T00:00:00Zoai:scielo:S0100-06832013000100020Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=0100-0683&lng=es&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||sbcs@ufv.br1806-96570100-0683opendoar:2013-03-14T00:00Revista Brasileira de Ciência do Solo (Online) - Sociedade Brasileira de Ciência do Solo (SBCS)false
dc.title.none.fl_str_mv Potential acidity estimated by SMP pH in soils of the state of Pará
title Potential acidity estimated by SMP pH in soils of the state of Pará
spellingShingle Potential acidity estimated by SMP pH in soils of the state of Pará
Gama,Marcos André Piedade
H + Al
soil analysis
Amazon
soil fertility
title_short Potential acidity estimated by SMP pH in soils of the state of Pará
title_full Potential acidity estimated by SMP pH in soils of the state of Pará
title_fullStr Potential acidity estimated by SMP pH in soils of the state of Pará
title_full_unstemmed Potential acidity estimated by SMP pH in soils of the state of Pará
title_sort Potential acidity estimated by SMP pH in soils of the state of Pará
author Gama,Marcos André Piedade
author_facet Gama,Marcos André Piedade
Matos,Gilson Sergio Bastos de
Silva,George Rodrigues da
Brasil,Edilson Carvalho
Nunes,Otiniel Ferreira
author_role author
author2 Matos,Gilson Sergio Bastos de
Silva,George Rodrigues da
Brasil,Edilson Carvalho
Nunes,Otiniel Ferreira
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Gama,Marcos André Piedade
Matos,Gilson Sergio Bastos de
Silva,George Rodrigues da
Brasil,Edilson Carvalho
Nunes,Otiniel Ferreira
dc.subject.por.fl_str_mv H + Al
soil analysis
Amazon
soil fertility
topic H + Al
soil analysis
Amazon
soil fertility
description The use of SMP pH to estimate the potential acidity (H + Al) is more practical than the method of 0.5 mol L-1 calcium acetate for routine laboratory analyses. The objective was to fit an equation to estimate the H + Al from SMP pH values of soils of the State of Pará. From various regions of the state, 177 soil samples were collected, in which the SMP pH was determined in 0.01 mol L-1 CaCl2 solution and H + Al in 0.5 mol L-1 calcium acetate and the results were related by regression analysis. The equation H + Al = 77.77 + 20.61 SMP pH - 1.435 SMP pH² (R² = 0.90) expressed the H + Al values (in cmol c dm-3) best. When the SMP pH values were used in equations referring to other regions or states in Brazil, the H +Al values were over- or underestimated. The potential acidity in soils of Pará can be estimated by the method of SMP pH.
publishDate 2013
dc.date.none.fl_str_mv 2013-02-01
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=S0100-06832013000100020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-06832013000100020
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 Sociedade Brasileira de Ciência do Solo
publisher.none.fl_str_mv Sociedade Brasileira de Ciência do Solo
dc.source.none.fl_str_mv Revista Brasileira de Ciência do Solo v.37 n.1 2013
reponame:Revista Brasileira de Ciência do Solo (Online)
instname:Sociedade Brasileira de Ciência do Solo (SBCS)
instacron:SBCS
instname_str Sociedade Brasileira de Ciência do Solo (SBCS)
instacron_str SBCS
institution SBCS
reponame_str Revista Brasileira de Ciência do Solo (Online)
collection Revista Brasileira de Ciência do Solo (Online)
repository.name.fl_str_mv Revista Brasileira de Ciência do Solo (Online) - Sociedade Brasileira de Ciência do Solo (SBCS)
repository.mail.fl_str_mv ||sbcs@ufv.br
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