| Source | Degree of freedom | Mean square | |
| With ears | Without ears | ||
| Water depths (W) | 5 | 1265.81** | 559.32** |
| Error-W | 18 | 10.61 | 20.55 |
| Plots | 23 |
|
|
| Potassium (K) | 5 | 877.53** | 324.24** |
| Int. W × K | 25 | 143.38** | 133.03** |
| Error-K | 90 | 4.66 | 7.44 |
| Total | 143 |
|
|
| CV of plots |
| 2.22% | 18.39% |
| CV of subplots |
| 3.46% | 15.33% |
| General mean |
| 62.4 t∙ha−1 | 49.1 t∙ha−1 |
| N˚ of observation |
| 144 | 144 |