Potential acidity estimated by SMP pH in soils of the state of Pará
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
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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Revista Brasileira de Ciência do Solo (Online) |
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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 |
_version_ |
1752126518504456192 |