the object of the application is medium organo mineral to improve plant growth based on higienizowanego sewage sludge and plant material rich in cellulose and lignin.the substrate is characterized by that it contains from 30 to 50% by weight higienizowanego sewage sludge, from 15 to 30% by weight of plant material rich in cellulose and lignin of particles from 0.20 to 120 mm, 15 to 30% by weight of mineral and / or rocks containing minerals of low strength alkalizującej, from 5 to 15 wt% of natural mineral sorbent, and from 1.5 to 10% organic component.
