Animal manure phosphorus characterization by sequential chemical fractionation, release kinetics and 31P-NMR analysis
| Autor: | Tales Tiecher, Mohsin Zafar, Fábio Joel Kochem Mallmann, Edson Campanhola Bortoluzzi, Marcos Antonio Bender, Lucas Henrique Ciotti, Danilo Rheinheimer dos Santos |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Revista Brasileira de Ciência do Solo, Vol 38, Iss 5, Pp 1506-1514 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1806-9657 0100-0683 |
| DOI: | 10.1590/S0100-06832014000500016 |
| Popis: | Phosphate release kinetics from manures are of global interest because sustainable plant nutrition with phosphate will be a major concern in the future. Although information on the bioavailability and chemical composition of P present in manure used as fertilizer are important to understand its dynamics in the soil, such studies are still scarce. Therefore, P extraction was evaluated in this study by sequential chemical fractionation, desorption with anion-cation exchange resin and 31P nuclear magnetic resonance (31P-NMR) spectroscopy to assess the P forms in three different dry manure types (i.e. poultry, cattle and swine manure). All three methods showed that the P forms in poultry, cattle and swine dry manures are mostly inorganic and highly bioavailable. The estimated P pools showed that organic and recalcitrant P forms were negligible and highly dependent on the Ca:P ratio in manures. The results obtained here showed that the extraction of P with these three different methods allows a better understanding and complete characterization of the P pools present in the manures. |
| Databáze: | Directory of Open Access Journals |
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