Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/30818
Título: Solubilização de fontes alternativas de potássio pelos ácidos húmicos, cítrico e casca de café
Autores: Curi, Nilton
Silva, Carlos Alberto
Marchi, Giuliano
Palavras-chave: Rocha potássica
Fonte alternativa de potássio
Solubilização
Ácido húmico
Ácido cítrico
Casca de café
K rock
Source alternate potassium
Solubilization
Humic acid
Citric acid
Coffee pods
Data do documento: 7-Jun-2016
Editor: Universidade Federal de Lavras
Citação: PESSOA, R. S. Solubilização de fontes alternativas de potássio pelos ácidos húmicos, cítrico e casca de café. 2015. 81 p. Dissertação (Mestrado Profissional em Tecnologias e Inovações Ambientais)-Universidade Federal de Lavras, Lavras, 2015.
Resumo: This study was to evaluate the solubility of nepheline syenite rocks and glauconite as alternative sources of K by organic humic acid arrays, citrus and coffee pods at various times from 0 to 180 days of incubation. The experiment was conducted in the fertility laboratory in the Department of Soil Science at the Federal University of Lavras in a completely randomized design with 90 treatments and 3 replications. The treatments were arranged in a factorial arrangement (2 x 3 x 7 + 3), 2 nepheline syenite rocks and glauconite incubated with water and 3 matrix organic humic acid, citric acid and coffee husk in six different incubation times of 0, 7, 15, 30, 75, 120 and 180 days, incubation were performed with the three above-mentioned organic matrix in increasing doses of 0, 1, 2, 5 and 10% humic acids and citric 0, 5, 10 20 and 40% for coffee husk. We evaluated the K2O content by different extractants soluble in 2% citric acid and water all treatments at all incubation times quoted above. Incubation and the application of organic matrix rocks nepheline syenite and generally glauconite provided a significant increase in solubility of K of the rocks studied in this work. Among the organic matrix has been observed that the coffee husk which provided the greatest release of K2O in both rocks mainly into the extractor 2% citric acid showed that the most efficient extraction K2O in all treatments.
URI: http://repositorio.ufla.br/jspui/handle/1/30818
Aparece nas coleções:Tecnologias e Inovações Ambientais - Mestrado Profissional (Dissertações)



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