| Registro completo |
| Provedor de dados: |
Rev. Bras. Ciênc. Solo
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| País: |
Brazil
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| Título: |
Comparison of H/Al stoichiometry of mineral and organic soils in Brazil
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| Autores: |
Perez,Daniel Vidal
Anjos,Lúcia Helena Cunha dos
Ebeling,Adierson Gilvani
Pereira,Marcos Gervasio
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| Data: |
2009-08-01
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| Ano: |
2009
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| Palavras-chave: |
Acid-base titration
ICP-OES
KCl
Histosols
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| Resumo: |
Exchangeable Al has been used as a criterion for the calculation of lime requirement in several Brazilian States. However, the laboratory method with extraction by a 1 mol L-1 KCl solution followed by indirect alkaline titration is not accurate for some Brazilian soils, mainly in the case of soils with high organic matter content. The objective of this study was therefore to evaluate the stoichiometry of H+/Al3+ in KCl soil extracts. The results suggested that organically complexed Al is the main contributor to exchangeable acidity in soils enriched with organic matter. Liming recommendations for organic soils based exclusively on exchangeable Al determined by the NaOH titration method should therefore be revised.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000400031
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| Editor: |
Sociedade Brasileira de Ciência do Solo
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| Relação: |
10.1590/S0100-06832009000400031
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Ciência do Solo v.33 n.4 2009
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| Direitos: |
info:eu-repo/semantics/openAccess
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