| Registro completo |
| Provedor de dados: |
Ciência Rural
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| País: |
Brazil
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| Título: |
Accuracy of methods to estimate potential acidity and lime requirement in soils of west region of Santa Catarina
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| Autores: |
Predebon,Rodrigo
Gatiboni,Luciano Colpo
Mumbach,Gilmar Luiz
Schmitt,Djalma Eugenio
Dall’Orsoletta,Daniel João
Brunetto,Gustavo
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| Data: |
2018-01-01
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| Ano: |
2018
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| Palavras-chave: |
SMP
Calcium acetate
Base saturation
Liming
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| Resumo: |
ABSTRACT: The objective of this study was to compare two methods of evaluation of potencial acidity (H+Al) and two methods to estimate liming requirement (LR) for soils from the west region of Santa Catarina State, Brazil. Fourteen soils were incubated with 7 lime rates for 120 days, obtaining the real values of H+Al at pH 7.0 and LR. These values were used as reference to evaluate the accuracy of two H+Al estimating methods: SMP buffer and calcium acetate at pH 7.0, and to evaluate the accuracy of two LR methods: base saturation (BS) and SMP index. On average, H+Al was underestimated in 6 and 40% by SMP and calcium acetate methods, respectively, especially in soils with high buffer capacity. The LR was underestimated in 20 and 30% by SMP index and BS, respectively. The SMP Index showed a better LR estimative than BS, especially in soils with high buffer capacity.
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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=S0103-84782018000400253
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| Editor: |
Universidade Federal de Santa Maria
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| Relação: |
10.1590/0103-8478cr20160935
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| Formato: |
text/html
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| Fonte: |
Ciência Rural v.48 n.4 2018
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| Direitos: |
info:eu-repo/semantics/openAccess
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