Influence of regular loads of liquid cattle manure and pig manure effluents on the migration of mobile humic substances along the profile of sod-podzolic soils

Abstract

The constant introduction of liquid animal waste for 26 years has increased the content of mobile humic substances throughout the profile of sod-podzolic soils under maintaining the main trends characteristic of soils without loads. Their greatest accumulation was observed in the Ap and A₁ horizons with more intensive accumulation of C_HAmob: the content of C_mob increased by 28-90 %, C_HAmob - by 35-112 %, C_FAmob - by 24-73 %; from a depth of about 40 cm, the increase in C_mob reached 29138 %, C_HAmob - 8-88 %, C_FAmob - 33-146 % with a greater accumulation of C_FAmob.