Table 4.
Analysis of variance of independent factors on the incidence and severity.
| Source of variation | df | Mean square | |
|---|---|---|---|
| Incidence (%) | Severity (%) | ||
| Altitude | 1 | 1832.7* | 1038.76** |
| District | 8 | 1318.91*** | 536.84*** |
| Variety | 1 | 2257.1** | 545.74* |
| Sowing date | 1 | 1.83 ns | 0.04 ns |
| Sowing method | 1 | 2930.69** | 1290.96** |
| Plant density (m−2) | 1 | 3229.19** | 1418.65*** |
| Crop growth stage | 2 | 169.45 ns | 34.44 ns |
| Cropping system | 1 | 6630.54*** | 3318.74*** |
| Fertilizer application | 1 | 3785.03*** | 1383.32*** |
| Weed management | 2 | 1932.40** | 1282.00*** |
df: Degree of freedom; MS: mean square, values with *, ** and *** implies significant at P = 0.05, P < 0.01 and P < 0.001 respectively; ns = not significant.