Table 4 Composition and characteristics of the three organic fertilizers.

Organic matter (g·kg⁻¹)^a

356 ± 3

318 ± 2

404 ± 5

Humic acid (g·kg⁻¹)^a

53.9 ± 1.7

61.4 ± 1.8

145 ± 7

Fulvic acid (g·kg⁻¹)^a

72.1 ± 2.5

59.7 ± 1.5

29.8 ± 0.9

Total N (g·kg⁻¹)^a

12.2 ± 0.2

13.6 ± 0.3

20.1 ± 0.2

Total P (g·kg⁻¹)^a

23.1 ± 0.3

51.0 ± 0.4

23.6 ± 0.2

Total K (g·kg⁻¹)^a

13.7 ± 0.2

9.0 ± 0.1

20.2 ± 0.2

Total Cu (mg·kg⁻¹)^a

128 ± 1.7

89.1 ± 1.2

75.7 ± 0.9

Total Zn (mg·kg⁻¹)^a

210 ± 1.4

248 ± 0.7

181 ± 1.4

Total As (mg·kg⁻¹)^a

4.12 ± 0.19

3.28 ± 0.29

7.85 ± 0.47

Total Cd (mg·kg⁻¹)^a

2.04 ± 0.42

2.33 ± 0.07

2.15 ± 0.11

Germination index (%)

83.5 ± 3.4

97.2 ± 2.8

112 ± 4.3

Escherichia coli (logCFU·g⁻¹)

3.12 ± 0.15

2.33 ± 0.17

ND

Moisture content (%)

43.8 ± 0.2

45.2 ± 0.1

35.2 ± 0.2