Table 2.
Plant-available N and P added (mg), total soil concentrations (mg kg−1), and properties for experimental soil amendments during setup.
| Soil amendments | N added | P added | N total | P total |
|---|---|---|---|---|
| Control | - | - | 13.0 | 5.6 |
| WC | 59.2 | 84.3 | 21.7 | 18 |
| B | 10.2 | 29.9 | 14.5 | 10 |
| WC + B | 69.4 | 114.2 | 23.2 | 22.4 |
| NP 100 | 251.6 | 165.9 | 50 | 30 |
| B + NP 150 | 431.8 | 297.8 | 76.5 | 49.4 |
| B + NP 100 | 261.8 | 195.8 | 51.5 | 34.4 |
| B + NP 50 | 91.8 | 93.8 | 26.5 | 19.4 |
| WC + B + NP 150 | 491.0 | 382.2 | 85.2 | 61.8 |
| WC + B + NP 100 | 321.0 | 280.2 | 60.2 | 46.8 |
| WC + B + NP 50 | 151.0 | 178.2 | 35.2 | 31.8 |
| Properties | Added | pH | Carbon | Moisture |
| WC | 120g | 6.2 | 7.32% | 29.8% |
| B | 30g | 9.49 | 85.5% | 56.4% |
Soil Amendments: Control = Non-amended, WC = Worm Compost, B = Biochar, NP = Commercial Fertilizers (% of Recommended Rate).