Experiments

soil adoption day

Total C (mg∙kg⁻¹)

Total N (mg∙kg⁻¹)

Total P (mg∙kg⁻¹)

Total K (mg∙kg⁻¹)

C/N ratio

${\text{NO}}_{\text{3}}^{-}\text{-N}$ (mg∙kg⁻¹)

${\text{NH}}_{\text{4}}^{\text{+}}\text{-N}$ (mg∙kg⁻¹)

Available phosphoric acid (mg∙kg⁻¹)

Exchangeable potassium (mg∙kg⁻¹)

pH

EC (mS∙cm⁻¹)

Organic

February

22,135 ± 81.6^z

1,922 ± 40.8

1,056 ± 8.16

2,300 ± 163

11.5 ± 0.08

3 ± 0.00

0 ± 0.00

0 ± 0.00

26 ± 2.45

6.6 ± 0.00

0.07 ± 0.01

May

22,973 ± 8.16

1,289 ± 24.5

1032 ± 4.08

2,633 ± 16.3

20.0 ± 0.22

1 ± 0.82

1 ± 0.00

92 ± 3.27

315 ± 8.16

6.9 ± 0.20

0.11 ± 0.01

August

23,960 ± 16.3

1,059 ± 32.7

1159 ± 3.27

2,391 ± 25.3

23.0 ± 0.86

0 ± 0.00

1 ± 0.82

162 ± 4.08

348 ± 12.2

6.7 ± 0.10

0.18 ± 0.02

October

24,310 ± 24.5

1,645 ± 40.8

1179 ± 89.8

2,363 ± 18.8

15.0 ± 0.21

1 ± 0.82

0 ± 0.00

162 ± 2.45

368 ± 5.72

6.5 ± 0.10

0.23 ± 0.01

Average

23,345 ± 853

1,479 ± 330

1,107 ± 63.5

2,422 ± 126

17.4 ± 4.44

1 ± 1.09

1 ± 0.50

104 ± 66.5

264 ± 139

6.7 ± 0.15

0.15 ± 0.06

Chemical

February

22,000 ± 408

1,800 ± 8.16

1,000 ± 8.06

2,108 ± 81.6

12.2 ± 0.16

6 ± 0.82

6 ± 0.00

4 ± 0.82

39 ± 0.82

5.9 ± 0.10

0.91 ± 0.01

May

20,275 ± 32.7

1,227 ± 81.6

1,022 ± 24.5

2,340 ± 19.6

19.0 ± 1.08

2 ± 0.82

4 ± 0.82

84 ± 4.90

365 ± 4.90

6.4 ± 0.20

0.36 ± 0.02

August

19,280 ± 16.3

811 ± 8.16

923 ± 0.82

2,341 ± 24.5

23.0 ± 0.22

0 ± 0.00

2 ± 0.00

146 ± 5.72

355 ± 6.53

6.5 ± 0.20

0.12 ± 0.01

October

21,703 ± 4.08

1,541 ± 49.0

1,290 ± 1.63

2,257 ± 49.0

15.0 ± 0.45

1 ± 0.82

0 ± 0.00

129 ± 4.90

379 ± 1.63

6.1 ± 0.00

0.25 ± 0.01

Average

20,815 ± 1100

1345 ± 369

1,059 ± 138

2,262 ± 95.0

17.3 ± 4.08

2 ± 2.28

3 ± 2.24

91 ± 55.0

285 ± 142

6.2 ± 0.24

0.41 ± 0.30

t-test^y

*

n.s.

n.s.

n.s.

n.s.

n.s.

n.s.

n.s

n.s.

*

n.s.