Storage time

ST > 3 years

2 ≤ ST < 3 years

ST < 2 years

parameters

“old” DFS

“intermediate” DFS

“recent” DFS

pH (H₂O)

4.95 ± 0.31

5.01 ± 0.28

5.16 ± 0.05

CE (mS/cm)

2.30 ± 0.51

3.51 ± 0.24

2.64 ± 0.52

CO (%)

13.64 ± 3.75

12.83 ± 3.96

17.79 ± 0.91

MO (%)

23.52 ± 6.46

22.12 ± 6.83

30.66 ± 1.58

N-t (%)

1.21 ± 0.36

1.08 ± 0.37

1.46 ± 0.11

C/N

11.34 ± 0.49

12.06 ± 1.11

12.17 ± 0.60

P-t (mg/kg)

12,603.90 ± 1847.90

12,922.95 ± 1155.06

13,476.13 ± 2882.28

K-t (mg/Kg)

556.22 ± 71.68

576.13 ± 189.23

704.72 ± 113.15

Na (mg/Kg)

152.31 ± 44.99

169.69 ± 61.43

148.90 ± 27.76

Ca (mg/Kg)

3680.58 ± 665.33

3931.76 ± 741.89

4702.55 ± 502.39

Mg (mg/kg)

2012.57 ± 597.70

1425.57 ± 87.61

1503.04 ± 400.78