The effect of different sulfur doses and forms on changes of soil heavy metals
2012
Skwierawska, M., University of Warmia and Mazury, Olsztyn (Poland). Dept. of Agricultural Chemistry and Evironmental Protection | Zawartka, L., University of Warmia and Mazury, Olsztyn (Poland). Dept. of Agricultural Chemistry and Evironmental Protection | Skwierawski, A., University of Warmia and Mazury, Olsztyn (Poland). Chair of Land Reclamation and Management | Nogalska, A., University of Warmia and Mazury, Olsztyn (Poland). Dept. of Agricultural Chemistry and Evironmental Protection
A three-year field experiment was conducted in North-East Poland. Each year three sulphur fertilization rates in the form of sulphate and pure S were applied as follows: 40, 80, and 120 kg/ha. After the third year of the study, the application of sulphate and elemental S decreased Zn levels in 040 and 4080 cm soil layers. Over the entire experimental period, S fertilization had no significant effect on changes in the natural Cu levels in soil at 040 and 4080 cm of depth. Mn concentrations remained at a similar level in soil depth of 0-40 cm. The Mn level in the 40-80 cm soil layer was substantially lower than in the 0-40 cm horizon. An insignificant increase in Pb level in soil was observed. The applied doses of sulphate and elemental S led to an increase in the Cd level in soil depth of 0-40 cm. S fertilization contributed to a decrease in Ni level. The applied doses of sulphate and elemental S exerted a stronger effect in the 0-40 cm soil layer than in the 40-80 cm horizon.
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