Table 5.
Shena kebele simulated irrigated maize, rice, Soybean, and onion rotation.
| Treatmenta | Yield | Residue | FN | FP | Q | WYld | ET | IRGA | Y | WS | NS | Protein |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (t/ha) | (t/ha) | (kg/ha) | (kg/ha) | (mm) | (mm) | (mm) | (mm) | (t/ha) | (d) | (d) | (kg/ha) | |
| Baseline | ||||||||||||
| Maize | 3.7 | 3.4 | 23 | 0 | 266 | 363 | 1591 | 591 | 0.7 | 6 | 47 | 300 |
| Rice | 4.2 | 4.3 | 55 | 23 | – | – | – | 0 | – | 1 | 45 | 352 |
| Onion | 1.8 | 0.1 | 23 | 0 | – | – | – | 111 | – | 1 | 21 | – |
| Baseline + N + I | ||||||||||||
| Maize | 9.1 | 8.6 | 178 | 0 | 272 | 370 | 1597 | 605 | 0.7 | 7 | 1 | 737 |
| Rice | 6 | 6.2 | 138 | 23 | – | – | – | 0 | – | 1 | 1 | 510 |
| Onion | 2.6 | 0.2 | 71 | 0 | – | – | – | 108 | – | 1 | 0 | – |
| Baseline + N + I + V | ||||||||||||
| Maize | 10.5 | 7.3 | 179 | 0 | 272 | 370 | 1607 | 604 | 0.7 | 7 | 1 | 850 |
| Rice | 6.9 | 5.5 | 150 | 23 | – | – | – | 0 | – | 2 | 1 | 586 |
| Onion | 3.7 | 0.1 | 73 | 0 | – | – | – | 117 | – | 2 | 0 | – |
| Irrigated Maize-Rice-Onion-Soybean-Rice-Onion Rotation (2 Years) | ||||||||||||
| Maize | 3.9 | 3.6 | 23 | 0 | 266 | 363 | 1631 | 578 | 0.6 | 3 | 47 | 316 |
| Soybean | 3.7 | 8 | 0 | 0 | – | – | – | 684 | – | 5 | 0 | 1628 |
| Rice | 4.7 | 4.9 | 55 | 23 | – | – | – | 0 | – | 3 | 34 | 400 |
| Onion | 1.9 | 0.1 | 23 | 0 | – | – | – | 111 | – | 1 | 19 | – |
a
Simulated 2-year rotation of maize-rice-onion-soybean-rice-onion. Grain/bulb yields (Yield), residue yields (Residue), fertilizer nitrogen (FN), fertilizer phosphorus (FP), runoff (Q), runoff + return flow to stream (WYld), evapotranspiration (ET), irrigation (IRGA), soil erosion (Y), water stress (WS), nitrogen stress (NS), grain protein content (Protein).