| P rates (kg∙ha−1∙P2O5) | Grain yield (kg∙ha−1) | Stover yield (kg∙ha−1) | ||
| Zn | No Zn | Zn | No Zn | |
| 0 | 1382 | 1302 | 2593 | 1893 |
| 16 | 3382 | 2945 | 5276 | 5078 |
| 32 | 4169 | 3246 | 6732 | 6189 |
| 64 | 4991 | 4213 | 10,462 | 9577 |
| 128 | 5735 | 4418 | 12,197 | 11,063 |
| Zn applied | ** | * | ||
| P applied | ** | ** | ||
| Zn applied*P applied | NS | NS | ||
| CV% | 15.26 | 14.31 | ||
| F-test | 67.02 | 17.78 | 94.67 | 100.81 |
| Intercept | 1584.80 | 1302.01 | 2921.00 | 2489.90 |
| Slope | 199.1 | 234.74 | 273.1 | 260.8 |
| Node | 18.98 | 11.33 | 33.97 | 32.87 |