Differences in soil sulfur fractions due to limitation of atmospheric deposition

J. Balík, M. Kulhánek, J. Černý, J. Száková, D. Pavlíková and P. Čermák
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J. Balík: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
M. Kulhánek: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
J. Černý: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
J. Száková: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
D. Pavlíková: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, Prague, Czech Republic
P. Čermák: Central Institute for Supervising and Testing in Agriculture, Brno, Czech Republic

Plant, Soil and Environment, 2009, vol. 55, issue 8, 344-352

Abstract: The aim of this work was to estimate the changes in contents of different sulfur (S) fractions in soils under conditions of lowering inputs of S from emissions together with the influence of application of manure and mineral fertilizers. Soil samples from long-term field experiments were used for this purpose. The samples were taken from 10 sites from precise long-term field experiments with different soil-climatic conditions in the Czech Republic. The samples were analyzed using the following fractionation: (i) water soluble S (H2O extracts), (ii) sorbed S (0.032M NaH2PO4 extracts) and (iii) S occluded with carbonates (1M HCl extract). Furthermore, the concentration of total S (Stot) and organic S (Sorg) was determined. Soil samples were taken in the years 1981 and 2007. During 26 years a decrease of Stot by about 3-8%, water soluble S by 65-68% and sorbed S by 39-44% were observed in the topsoil of the evaluated soils. Furthermore, a low increase in the content of organic S was observed. The estimated ratio of Sorg reached 78.7-80.9% from Stot in the year 1981 and 87.7-89.8% in 2007. Farmyard manure (40 t/ha) applied every 4 years did not have a significant influence on S fractions and Stot contents in soils; intensive S fertilizing increased Stot and mobile S forms contents in soils. Very close correlations were obtained especially between Stot and water soluble S and organic S.

Keywords: soil; S; long term stationary experiments; S-fractionation; fertilizing (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:55:y:2009:i:8:id:101-2009-pse

DOI: 10.17221/101/2009-PSE

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