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Coca Cola is it! The ubiquitous extractant for micronutrients in soil. -- p. 1721-1730
- Autor:
- Schnug, E. Fleckenstein, J. Haneklaus, S.
- Pie de Imprenta:
- Communications in soil science and plant analysis USA. Vol. 27, no. 58 1996.
- Descriptores:
- BEBIDAS. CULTIVOS (AGRICULTURA). ELEMENTOS DE TRANSICION. ELEMENTOS METALICOS. PRODUCTOS QUIMICOS INORGANICOS. POACEAE. METALES PESADOS. TIPOS DE SUELO.
- Resumen:
- Coca Cola has been found to be an excellent extractant for micronutrients in soils, particular for manganese (Mn). The main ingredients of Coca Cola, phosphoric acid, reducing sugar and carbon dioxide are well proven in common extraction recipes. The overall extraction force of Coca Cola was similar to that of commonly used phosphoric acid methods. Compared to DTPA, Coca Cola extracted only 27 of iron (Fe), 38 of copper (Cu), and 86 of zinc (Zn), but 165 of Mn. Correlation coefficients for the relationship between Coca Cola-extractable Fe, Zn, and Cu in soils and element concentrations in plants were the same as by means of the DTPA method. For Mn 49 of the variability in Mn concentrations observed in field grown winter wheat plants could be explained by Coca Cola-extractable soil Mn, but only 39 when employing DTPA. The critical value for available Mn and Zn on the investigated inceptisols was 17.8 mg/kg Mn and 1.3 mg/cg Zn for Coca Cola and 9.4 mg/kg Mn and 1.8 mg/kg Zn for DTPA. Tentative critical values for Fe and Cu are 19.3 mg/kg Fe and 0.38 mg/kg Cu for Coca Cola and 73 mg/kg Fe and 0.96 mg/kg Cu for the DTPA method. Besides the better results in extracting available micronutrient fractions from soils, further advantages of Coca Cola as an extractant are its ubiquitous availability and readiness for use but also its easy and safe handling and the fact that the procedure has no harmful impacts on environment.
- Ubicación:
- HEM.
Para solicitar información sobre este documento, ingrese al Centro Propietario: EARTH
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