| N rates | pH | Langmuir parameters | |||
| Sorption maximum (b) | Bonding energy constant (k) | P buffering capacity | R2 | ||
| kg∙ha−1 |
| μg P∙g−1 |
| μg∙g−1 |
|
| 0 | 4.25 | 1.17 | 0.60 | 0.70 | 0.99 |
| 40 | 4.69 | 1.83 | 1.08 | 1.98 | 0.99 |
| 80 | 5.50 | 2.38 | 1.63 | 3.87 | 0.99 |
| 120 | 5.70 | 2.53 | 5.03 | 12.73 | 0.98 |