2.3. Soil substitutes blends
Soil substitutes were prepared by appropriate blending of wastes (Table 3). The experiments were run at three operational stages, namely I, II and III. During the study four types of soil substitutes blends with different fertility and water retention ability were developed i.e. dry and moderate fertility (A), mesic and low fertility (B), mesic and moderate fertility (C), humid and low fertility (D). Soils substitutes blends (A1-D3) differed from each other in terms of the type of wastes and their percentage share (n=36).
TABLE 3 List of wastes and their percentage range (wt.%) within given soil substitutes blends