The effect of different sulfur doses and forms on changes of soil heavy metals
M. Skwierawska, L. Zawartka, A. Skwierawski, A. Nogalskahttps://doi.org/10.17221/638/2011-PSECitation:Skwierawska M., Zawartka L., Skwierawski A., Nogalska A. (2012): The effect of different sulfur doses and forms on changes of soil heavy metals. Plant Soil Environ., 58: 135-140.
A three-year field experiment was conducted in North-East Poland. Each year three sulfur fertilization rates in the form of sulphate (S-SO42–) and pure (S–S0) sulfur were applied: 40, 80, and 120 kg/ha. After the third year of the study, the application of sulfate and elemental sulfur decreased the zinc content of 0–40 and 40–80 cm soil layers, as compared with soil sampled before the experiment. Over the entire experimental period, sulfur fertilization had no significant effect on changes in the natural copper content of soil at a depth of 0–40 and 40–80 cm. Manganese concentrations remained at a similar level at a soil depth of 0–40 cm. The manganese content of the 40–80 cm soil layer was substantially lower than in the 0–40 cm horizon. An insignificant increase in the lead content of soil was observed. The applied doses of sulfate and elemental sulfur led to an increase in the cadmium content of soil depth of 0–40 cm. Sulfur fertilization contributed to a decrease in the nickel content of soil. The applied doses of sulfate and elemental sulfur exerted a stronger effect in the 0–40 cm soil layer than in the 40–80 cm horizon.Keywords:
fertilizer; S-SO42–; S-elemental; available forms; zinc; copper; manganese; lead; cadmium; nickel; interaction