| Chemical features | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Composts | pH | EC (mS cm −1 ) | N (%) | P (%) | K (%) | Ca (%) | Mg (%) | Na (%) | Mn (ppm) | Cd (ppm) | Cr (ppm) | Cu (ppm) | Pb (ppm) | Zn (ppm) |
C1 | 8.40 | 2.69 | 1.25 | 0.023 | 1.46 | 3.87 | 1.02 | 0.20 | 328.99 | 0.47 | 34.80 | 40.16 | 4.17 | 64.62 |
C2 | 8.19 | 4.12 | 1.23 | 0.020 | 1.21 | 5.32 | 1.25 | 0.15 | 297.42 | 0.51 | 34.84 | 55.68 | 4.58 | 108.50 |
C3 | 8.12 | 5.09 | 1.41 | 0.045 | 1.99 | 4.43 | 1.18 | 0.22 | 415.18 | 0.45 | 57.96 | 52.96 | 4.87 | 140.40 |
C4 | 8.31 | 8.92 | 1.52 | 0.048 | 1.92 | 4.90 | 1.23 | 0.15 | 260.96 | 0.58 | 17.99 | 45.02 | 3.09 | 57.06 |
COW | 8.93 | 5.07 | 2.72 | 0.029 | 1.18 | 6.58 | 0.40 | 0.27 | 427.30 | 0.30 | 16.05 | 45.98 | 28.15 | 247.40 |
Legal limits | Â | Â | Â | Â | Â | Â | Â | Â | Â | <1.5 | <100 | <150 | <140 | <500 |