| Tillage | No-Till | ||
| Cover | No-Cover | Cover | No-Cover |
P (kg/ha) | 264 a | 215 b | 247 a | 211 b |
K (kg/ha) | 194 a | 133 b | 167 a | 130 b |
Mn (kg/ha) | 33 a | 25 b | 31 a | 24 b |
OM (%) | 1.41 a | 0.87 b | 1.42 a | 0.97 b |