| Irrigation Levels | Grain yield, kg∙ha−1, at nitrogen levels | Mean depletion, mm | Mean water use (mm) | |||
| N1 | N2 | N3 | Mean | |||
| I1 | 3171 | 3614 | 3457 | 3414 | 94 | 345 |
| I2 | 3624 | 4288 | 4600 | 4171 | 85 | 366 |
| I3 | 4286 | 4684 | 5603 | 4858 | 74 | 382 |
| I4 | 4410 | 5005 | 5802 | 5072 | 62 | 401 |
| Mean | 3873 | 4398 | 4866 |
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| Factors | I | N | I × N |
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| LSD (0.05) | 407 | 389 | 711 |
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