| Vertical factor: maize variety (a) | Horizontal factor: nitrogen rate (b) | ||
| a0 = 2009 EVDT | b0 = 0 kg N ha−1 | 60 kg P ha−1 | 60 kg K ha−1 |
| a1 = IWDC2 | b1 = 30 kg N ha−1 | 60 kg P ha−1 | 60 kg K ha−1 |
| a2 = DMR-ESR-Yellow (check variety) | b2 = 60 kg N ha−1 | 60 kg P ha−1 | 60 kg K ha−1 |
|
| b3 = 90 kg N ha−1 | 60 kg P ha−1 | 60 kg K ha−1 |
|
| b4 = 120 kg N ha−1 | 60 kg P ha−1 | 60 kg K ha−1 |
|
| b5 = 150 kg N ha−1 | 60 kg P ha−1 | 60 kg K ha−1 |
|
| b6 = 180 kg N ha−1 | 60 kg P ha−1 | 60 kg K ha−1 |