Storage duration

SD > 3 years

2 ≤ SD < 3 years

SD < 2 years

Parameters

“old” DFS

“intermediate” DFS

“recent” DFS

pH (H₂O)

4.85 ± 0.13

5.24 ± 0.60

5.83 ± 0.16

EC (mS/cm)

6.55 ± 0.06

2.50 ± 0.42

3.92 ± 1.12

CO (%)

19.07 ± 5.18

21.86 ± 0.92

24.17 ± 2.52

MO (%)

32.88 ± 8.93

37.68 ± 1.59

41.68 ± 4.34

N-t (%)

1.62 ± 0.51

1.83 ± 0.15

2.11 ± 0.31

C/N

11.89 ± 0.64

11.98 ± 0.44

11.53 ± 0.61

P-t (mg/kg)

14,516.26 ± 2408.43

17,693.63 ± 1178.07

18,687.55 ± 1570.68

K-t (mg/Kg)

660.58 ± 114.56

891.51 ± 122.25

1469.46 ± 1110.16

Na (mg/Kg)

58.34 ± 39.02

159.16 ± 69.24

389.94 ± 288.77

Ca (mg/Kg)

4659.90 ± 856.61

6415.95 ± 1127.03

6839.61 ± 1521.90

Mg (mg/kg)

1706.97 ± 264.97

1933.64 ± 608.00

2894.92 ± 329.88