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Extractant efficiency in the solubilization of alternative sources of potassium Agronomy
Reis, Daniele Nogueira dos; van Straaten, Peter; Furtini Neto, Antonio Eduardo; Bittar, Sheila Maria Bretas; Curi, Nilton.
Knowledge of a rock’s composition allows for inferences regarding several properties, ranging from its physical characteristics to its solubility. This study aimed to evaluate the use of different extractants to solubilize the K present in rocks as a potential source of nutrients and the effects of extractant contact time and temperature on rock solubilization. Samples of two rocks and a mineral concentrated from a granitic rock were treated with ammonium dihydrogen phosphate (NH4(H2PO4)), calcium dihydrogen phosphate (Ca(H2PO4)2), sodium hydroxide (NaOH) and water (control). Sample-extractant treatments were performed using a water bath shaker at temperatures of 25 and 50°C for periods of 3, 7, 10, 20, and 30 days. The amounts of K extracted from rocks...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Minerals; Soluble K; Fertilizers; Powdered rock.
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28457
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