Table 3.
Soil properties at pak choi harvest under amendment treatments of the biowastes before and after pyrolysis in pot experiment.
| Treat-ment | pH (H2O) | SOC (g kg−1) | Total N (g kg−1) | Available K (mg kg−1) | Available P (mg kg−1) | C/N ratio |
|---|---|---|---|---|---|---|
| CK | 4.81 ± 0.03e | 10.96 ± 0.68 d | 1.51 ± 0.06 d | 148.5 ± 9.22 d | 75.5 ± 6.05 d | 7.28 ± 0.36 d |
| UWS | 5.03 ± 0.03Bd | 14.96 ± 0.36Bc | 1.55 ± 0.03Acd | 236.8 ± 10.7Bc | 73.0 ± 2.93Bd | 9.63 ± 0.36Bbc |
| WSB | 5.19 ± 0.04Ac | 21.00 ± 0.82Aa | 1.55 ± 0.02Acd | 326.3 ± 13.1Aa | 97.1 ± 9.84Ac | 13.58 ± 0.56Aa |
| UMS | 5.25 ± 0.02Bc | 14.09 ± 0.29Bc | 1.95 ± 0.09Aa | 268.0 ± 6.82Bb | 154.1 ± 12.7Bb | 7.24 ± 0.42Bd |
| SMB | 5.49 ± 0.06Aa | 17.37 ± 0.39Ab | 1.72 ± 0.13Bbc | 320.0 ± 11.8Aa | 186.9 ± 15.3Aa | 10.17 ± 0.95Ab |
| USS | 5.02 ± 0.04Bd | 14.86 ± 0.34Ac | 1.74 ± 0.07Ab | 155.6 ± 4.26Ad | 87.0 ± 8.08Acd | 8.53 ± 0.16Acd |
| SSB | 5.35 ± 0.04Ab | 13.68 ± 0.77Ac | 1.53 ± 0.10Bd | 144.6 ± 14.8Ad | 73.7 ± 4.48Bd | 9.00 ± 0.86 Abc |
Data of the mean ± standard deviation. CK, control; UWS and WSB, USM and SMB, and USS and SSB, wheat residue, swine manure and sewage sludge, respectively before and after pyrolysis. Different uppercase letters following a single pair of amendment in a single column represents a significant difference of the bio-waste between before and after pyrolysis while different lowercase letters in a single column represent a significant difference among all the treatments, respectively at p < 0.05(One-way ANOVA followed by Turkey test).