MIGRATION OF MOBILE FORMS OF HEAVY METALS ALONG THE PROFILE OF SOD-PODZOLIC SOILS UNDER THE INFLUENCE OF REGULAR LOADS OF LIQUID ANIMAL WASTE

Abstract

With loads of liquid animal waste for 26 years, the content of mobile forms Zn, Cu and Mn increased throughout the profile of sod-podzolic soils under the biogenic-accumulative nature of the distribution, while maintaining the main trends established for soils without loads. In sandy soil (liquid manure of cattle 100-200 t/ha) the increase in the content of mobile forms of Cu in genetic horizons was 10-27 %, Zn - 12-49 %, Mn - 6-40 %; in sandy loam (pig manure effluents 500-600 t/ha) - 30-100 % Cu, 40-219 % Zn, 25-85 % Mn; in loamy (liquid manure of cattle 900-1000 t/ha) - 50-200 % Cu, 79-414 % Zn, 35-162 % Mn. By migration intensity heavy metals are arranged in a row: Zn > Cu > Mn.