A1-A3, B1-B3, C1-C3, D1-D3 - soil substitutes dedicated to vegetation
(I, II, III) - Consecutive stages for testing soil substitutes
Additionally garden soil (RG) and substrate for germination (RS) were
used as two control soils for the germination tests in order to
determine the growth potential of the soil substitutes. Control soils
have been selected in order to represent different conditions like pH,
organic matter and N, P, K concentrations, more or less favorable for
seeds germination (Table 4).
TABLE 4 Parameters of control soils used in germination tests