Mineralogical, chemical and electrochemical attributes of soils

Detalhes bibliográficos
Autor(a) principal: Almeida, Cecília Calhau
Data de Publicação: 2021
Outros Autores: Fontes, Maurício Paulo Ferreira, Dias, Adriana Cristina, Pereira, Thiago Torres Costa, Ker, João Carlos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: https://www.revistas.usp.br/sa/article/view/184158
Resumo: A set of attributes endows the soils with distinctive characteristics and astute understanding is required in order to formulate suitable strategies for soil management. The aim of this study was to physically, chemically and mineralogically characterize samples of the main soil classes in Minas Gerais, Brazil, determine the point of zero salt effect (PZSE) and the point of zero charge (PZC), and ascertain the correlation between these factors and soil attributes. The soils evaluated presented different textural classes ranging from loamy sand (Entisol) to very clayey (some Oxisols and Ultisols). The soils differed substantially in terms of fertility, presenting a range from dystrophic (low fertility, base saturation < 50 %) to eutrophic character (fertility, base saturation ≥ 50 %), even within the same soil class, such as the Oxisols, which suggests the concurrence of the parent material. Highly weathered soils are predominant in Minas Gerais and these soils are composed predominantly of kaolinite, gibbsite, goethite and hematite. Traces of hydroxy-Al interlayered vermiculite and illite were also found in the Oxisols, Ultisols and Inceptisols. A correlation between the PZSE and the PZC in the A horizon was observed. A high degree of correlation was observed between the PZC and the exchangeable aluminum and the ratio of iron obtained by ammonium oxalate and dithionite-citrate (Feo/Fed) in both the A and B horizons of soil classes. The results obtained reinforce the importance of knowledge of soil attributes to the adoption of practices such as the management of phosphate fertilization in clayey soils and liming in soils rich in aluminum.
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spelling Mineralogical, chemical and electrochemical attributes of soilssoil attributesweathered soilssecondary mineralsmineralogical compositionpoint of zero chargeA set of attributes endows the soils with distinctive characteristics and astute understanding is required in order to formulate suitable strategies for soil management. The aim of this study was to physically, chemically and mineralogically characterize samples of the main soil classes in Minas Gerais, Brazil, determine the point of zero salt effect (PZSE) and the point of zero charge (PZC), and ascertain the correlation between these factors and soil attributes. The soils evaluated presented different textural classes ranging from loamy sand (Entisol) to very clayey (some Oxisols and Ultisols). The soils differed substantially in terms of fertility, presenting a range from dystrophic (low fertility, base saturation < 50 %) to eutrophic character (fertility, base saturation ≥ 50 %), even within the same soil class, such as the Oxisols, which suggests the concurrence of the parent material. Highly weathered soils are predominant in Minas Gerais and these soils are composed predominantly of kaolinite, gibbsite, goethite and hematite. Traces of hydroxy-Al interlayered vermiculite and illite were also found in the Oxisols, Ultisols and Inceptisols. A correlation between the PZSE and the PZC in the A horizon was observed. A high degree of correlation was observed between the PZC and the exchangeable aluminum and the ratio of iron obtained by ammonium oxalate and dithionite-citrate (Feo/Fed) in both the A and B horizons of soil classes. The results obtained reinforce the importance of knowledge of soil attributes to the adoption of practices such as the management of phosphate fertilization in clayey soils and liming in soils rich in aluminum.Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2021-03-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/18415810.1590/1678-992X-2020-0071Scientia Agricola; v. 78 n. 6 (2021); e20200071Scientia Agricola; Vol. 78 Núm. 6 (2021); e20200071Scientia Agricola; Vol. 78 No. 6 (2021); e202000711678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/184158/170539Copyright (c) 2021 Scientia Agricolahttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessAlmeida, Cecília Calhau Fontes, Maurício Paulo Ferreira Dias, Adriana Cristina Pereira, Thiago Torres Costa Ker, João Carlos 2021-04-11T20:13:26Zoai:revistas.usp.br:article/184158Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2021-04-11T20:13:26Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Mineralogical, chemical and electrochemical attributes of soils
title Mineralogical, chemical and electrochemical attributes of soils
spellingShingle Mineralogical, chemical and electrochemical attributes of soils
Almeida, Cecília Calhau
soil attributes
weathered soils
secondary minerals
mineralogical composition
point of zero charge
title_short Mineralogical, chemical and electrochemical attributes of soils
title_full Mineralogical, chemical and electrochemical attributes of soils
title_fullStr Mineralogical, chemical and electrochemical attributes of soils
title_full_unstemmed Mineralogical, chemical and electrochemical attributes of soils
title_sort Mineralogical, chemical and electrochemical attributes of soils
author Almeida, Cecília Calhau
author_facet Almeida, Cecília Calhau
Fontes, Maurício Paulo Ferreira
Dias, Adriana Cristina
Pereira, Thiago Torres Costa
Ker, João Carlos
author_role author
author2 Fontes, Maurício Paulo Ferreira
Dias, Adriana Cristina
Pereira, Thiago Torres Costa
Ker, João Carlos
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Almeida, Cecília Calhau
Fontes, Maurício Paulo Ferreira
Dias, Adriana Cristina
Pereira, Thiago Torres Costa
Ker, João Carlos
dc.subject.por.fl_str_mv soil attributes
weathered soils
secondary minerals
mineralogical composition
point of zero charge
topic soil attributes
weathered soils
secondary minerals
mineralogical composition
point of zero charge
description A set of attributes endows the soils with distinctive characteristics and astute understanding is required in order to formulate suitable strategies for soil management. The aim of this study was to physically, chemically and mineralogically characterize samples of the main soil classes in Minas Gerais, Brazil, determine the point of zero salt effect (PZSE) and the point of zero charge (PZC), and ascertain the correlation between these factors and soil attributes. The soils evaluated presented different textural classes ranging from loamy sand (Entisol) to very clayey (some Oxisols and Ultisols). The soils differed substantially in terms of fertility, presenting a range from dystrophic (low fertility, base saturation < 50 %) to eutrophic character (fertility, base saturation ≥ 50 %), even within the same soil class, such as the Oxisols, which suggests the concurrence of the parent material. Highly weathered soils are predominant in Minas Gerais and these soils are composed predominantly of kaolinite, gibbsite, goethite and hematite. Traces of hydroxy-Al interlayered vermiculite and illite were also found in the Oxisols, Ultisols and Inceptisols. A correlation between the PZSE and the PZC in the A horizon was observed. A high degree of correlation was observed between the PZC and the exchangeable aluminum and the ratio of iron obtained by ammonium oxalate and dithionite-citrate (Feo/Fed) in both the A and B horizons of soil classes. The results obtained reinforce the importance of knowledge of soil attributes to the adoption of practices such as the management of phosphate fertilization in clayey soils and liming in soils rich in aluminum.
publishDate 2021
dc.date.none.fl_str_mv 2021-03-23
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://www.revistas.usp.br/sa/article/view/184158
10.1590/1678-992X-2020-0071
url https://www.revistas.usp.br/sa/article/view/184158
identifier_str_mv 10.1590/1678-992X-2020-0071
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/sa/article/view/184158/170539
dc.rights.driver.fl_str_mv Copyright (c) 2021 Scientia Agricola
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2021 Scientia Agricola
http://creativecommons.org/licenses/by-nc/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
dc.source.none.fl_str_mv Scientia Agricola; v. 78 n. 6 (2021); e20200071
Scientia Agricola; Vol. 78 Núm. 6 (2021); e20200071
Scientia Agricola; Vol. 78 No. 6 (2021); e20200071
1678-992X
0103-9016
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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