ABSTRACT
High quality of the soil is determined by an appropriate system of physical, physicochemical and biological properties (Carter, 2002). Increase in the content of organic matter in poor-quality soils is one of the ways leading to a radical improvement of their properties. Stabilized municipal sewage sludge can be an effective source of exogenous organic matter for the soils. It improves porosity, water retention, sorption capacity of the soil and supplies the nutrients for plant growth (Żukowska et al. 2002). It was used as a supplement improving the parameters of biofilter beds (Hort et al. 2009, Pawłowska et al. 2011) or soil-like materials formed on the base of different waste (Kujawska et al. 2014).
