|
| Microbial N | Microbial C/Microbial N | Mineral N | |||||||||
| Sampling Periods |
| Centro | Calopo | Pueraria | Centro | Calopo | Pueraria | Centro | Calopo | Pueraria | ||
| Soil Materials | (mg N kg−1 soil) |
| (mg N kg−1 soil) | |||||||||
| 3 Weeks | Uncontaminated soil | 16.6 ± 2.2a | 15.8 ± 2.5 | 13.6 ± 0.7 | 7.2 ± 0.4 | 14.5 ± 1.2 | 16.4 ± 1.5 | 186 ± 7.5 | 174 ± 3.4 | 134 ± 6.4 | ||
|
| Oil-contaminated soil | 39.8 ± 3.2 | 39.1 ± 2.4 | 38.3 ± 0.2 | 20.8 ± 0.8 | 16.6 ± 1.8 | 12.7 ± 2.2 | 6 ± 2.4 | 3.8 ± 1.8 | 4.2 ± 1.6 | ||
|
| Poultry manure-treated soil | 29.7 ± 2.8 | 28.2 ± 3.5 | 18.2 ± 0.6 | 86.4 ± 2.6 | 75.2 ± 1.6 | 42.7 ± 2.1 | 168 ± 2.8 | 156 ± 3.5 | 131 ± 7.6 | ||
|
| NPK-treated soil | 18.2 ± 2.5 | 16.4 ± 0.7 | 12.5 ± 0.4 | 38.8 ± 1.2 | 30.6 ± 1.5 | 36.7 ± 2.3 | 134 ± 2.8 | 122 ± 2.4 | 118 ± 3.6 | ||
| 6 Weeks | Uncontaminated soil | 7.2 ± 0.6 | 7.4 ± 0.8 | 7.8 ± 0.6 | 6.5 ± 2.3 | 24.5 ± 1.6 | 28.4 ± 0.9 | 156 ± 6.4 | 142 ± 5.4 | 24 ± 2.1 | ||
|
| Oil-contaminated soil | 38.2 ± 0.8 | 32.7 ± 0.2 | 26.2 ± 0.4 | 18.5 ± 0.5 | 15.3 ± 0.7 | 10.5 ± 0.4 | 4.2 ± 0.5 | 3.2 ± 0.6 | 2.2 ± 1.2 | ||
|
| Poultry manure-treated soil | 16.2 ± 1.4 | 14.6 ± o.8 | 11.2 ± o.8 | 86.4 ± 2.5 | 80.2 ± 2.2 | 68.4 ± 2.9 | 178 ± 8.5 | 156 ± 2.8 | 79 ± 3.4 | ||
|
| NPK-treated soil | 12.5 ± 0.4 | 10.4 ± 0.5 | 8.9 ± 1.2 | 84.6 ± 1.7 | 78.3 ± 2.8 | 32.1 ± 1.1 | 158 ± 4.5 | 137 ± 3.5 | 48 ± 1.5 | ||
| 9 Weeks | Uncontaminated soil | 9.8 ± 0.7 | 6.6 ± 0.8 | 3.6 ± 0.4 | 4.6 ± 0.8 | 15.6 ± 2.1 | 19.4 ± 1.2 | 82 ± 1.8 | 66 ± 2.8 | 50 ± 0.7 | ||
|
| Oil-contaminated soil | 28.6 ± 2.8 | 28.0 ± 2.1 | 28.5 ± 3.4 | 14.7 ± 0.6 | 12.2 ± 0.9 | 8.3 ± 0.7 | 6.2 ± 0.2 | 5.4 ± 1.8 | 4.1 ± 0.4 | ||
|
| Poultry manure-treated soil | 16.5 ± 2.6 | 10.9 ± 0.7 | 9.8 ± 1.4 | 68.2 ± 4.2 | 76.5 ± 2.6 | 92.7 ± 1.4 | 182 ± 5.6 | 174 ± 6.8 | 13 ± 1.4 | ||
|
| NPK-treated soil | 15.4 ± 1.5 | 12.2 ± 1.2 | 4.8 ± 1.5 | 28.5 ± 2.8 | 22.3 ± 1.2 | 29.6 ± 0.8 | 162 ± 2.6 | 156 ± 3.4 | 7.5 ± 2.6 | ||
| 12 Weeks | Uncontaminated soil | 5.2 ± 0.4 | 6.4 ± 0.8 | 7.6 ± 1.5 | 14.9 ± 2.1 | 10.6 ± 0.3 | 12.4 ± 0.6 | 16.5 ± 0.6 | 14.5 ± 0.8 | 11.1 ± 0.4 | ||
|
| Oil-contaminated soil | 30.6 ± 2.1 | 29.2 ± 0.2 | 28.6 ± 2.4 | 34.2 ± 2.8 | 30.6 ± 1.3 | 32.8 ± 1.6 | 2 ± 0.8 | 2 ± 0.4 | 2 ± 0.6 | ||
|
| Poultry manure-treated soil | 14.8 ± 1.2 | 14.3 ± 0.7 | 12.2 ± 2.6 | 98.6 ± 7.7 | 74.8 ± 2.8 | 56.4 ± 2.4 | 122 ± 3.4 | 110 ± 5.6 | 2.4 ± 0.3 | ||
|
| NPK-treated soil | 12.2 ± 1.4 | 10.8 ± 0.4 | 10.2 ± 0.7 | 50.4 ± 2.6 | 34.8 ± 1.6 | 26.7 ± 1.3 | 104 ± 0.9 | 101 ± 0.2 | 2.2 ± 0.5 | ||