Data/hora: 05/06/2024 03:39:33

Provedor de dados: | 65
País: | Brazil
Título: | Accuracy of methods to estimate potential acidity and lime requirement in soils of west region of Santa Catarina
Autores: | Predebon,Rodrigo; Gatiboni,Luciano Colpo; Mumbach,Gilmar Luiz; Schmitt,Djalma Eugenio; Dall’Orsoletta,Daniel João; Brunetto,Gustavo.
Data: | 2018-01-01
Ano: | 2018
Palavras-chave: | SMP; Calcium acetate; Base saturation; Liming.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400253
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20160935
Formato: | text/html
Fonte: | Ciência Rural  v.48 n.4 2018
Fonte: | info:eu-repo/semantics/openAccess