Layer (depth cm) pH (H2O) Electrical conductivity dS/cm 1:1 NO3-N
mg/kg DW
NH4-N
mg/kg DW
1 (0-15) 6.4 0.44 60.9 9.65
2 (15-35) 6.5 0.23 20.5 8.30
Table 1: Chemical characteristics of the soil profile at the studied vases (before adding chemical substances and pre growing of Amaranthus).