Storage duration | SD > 3 years | 2 ≤ SD< 3 years | SD < 2 years |
Parameters | “old” DFS | “intermediate” DFS | “recent” DFS |
pH (H2O) | 4.93 ± 0.21 | 4.96 ± 0.13 | 5.77 ± 0.06 |
EC (mS/cm) | 2.66 ± 0.25 | 3.67 ± 0.32 | 5.01 ± 1.03 |
CO (%) | 14.38 ± 3.22 | 17.35 ± 0.51 | 18.13 ± 3.17 |
MO (%) | 24.79 ± 5.55 | 29.91 ± 0.88 | 31.25 ± 5.47 |
N-t (%) | 1.46 ± 0.07 | 1.85 ± 0.06 | 1.80 ± 0.33 |
C/N | 9.79 ± 1.81 | 9.37 ± 0.33 | 10.07 ± 0.74 |
P-t (mg/kg) | 18,027.34 ± 1436.19 | 18,119.28 ± 1011.93 | 15,343.85 ± 1188.32 |
K-t (mg/Kg) | 616.77 ± 104.35 | 739.83 ± 14.68 | 1462.68 ± 1139.34 |
Na (mg/Kg) | 69.31 ± 15.22 | 80.31 ± 43.32 | 438.86 ± 179.31 |
Ca (mg/Kg) | 4641.98 ± 552.68 | 5428.60 ± 73.59 | 5846.85 ± 774.26 |
Mg (mg/kg) | 1841.89 ± 70.34 | 2176.42 ± 286.64 | 2649.79 ± 682.55 |