Table 5.
Logistic regression model for common bean common bean rust incidence (%) and severity (%) and likelihood ratio test on independent variables in Southern Ethiopia during the 2022 main cropping season.
| Independent variable | df | Common bean rust incidence LRTa | Common bean rust severity LRTa | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Type 1 analysis (VEF) | Type 3 analysis (VEL) | Type 1 analysis (VEF) | Type 3 analysis (VEL) | ||||||
| DR | P > χ2 | DR | P > χ2 | DR | P > χ2 | DR | P > χ2 | ||
| District | 8 | 26.32 | < 0.000 | 30.62 | < 0.000 | 27.79 | < 0.000 | 22.42 | 0.004 |
| Altitude | 1 | 0.10 | 0.74 | 4.51 | 0.03 | 4.67 | 0.03 | 2.50 | 0.11 |
| Sowing date | 1 | 0.08 | 0.76 | 0.51 | 0.47 | 4.70 | 0.03 | 0.19 | 0.65 |
| Cropping system | 1 | 18.95 | < 0.000 | 2.43 | 0.01 | 41.01 | < 0.000 | 11.19 | < 0.00 |
| Plant (m−2) | 1 | 5.21 | 0.02 | 41.01 | 0.087 | 6.30 | 0.01 | 0.19 | 0.66 |
| Sowing method | 1 | 11.19 | < 0.000 | 2.43 | 0.12 | 11.19 | < 0.000 | 2.31 | 0.12 |
| Variety | 1 | 5.90 | 0.01 | 0.96 | 0.32 | 5.73 | 0.01 | 0.79 | 0.37 |
| Growth stage | 2 | 0.54 | 0.76 | 5.65 | 0.05 | 0.90 | 0.63 | 0.52 | 0.77 |
| Weed management | 2 | 10.29 | 0.005 | 4.58 | 0.10 | 21.73 | < 0.000 | 3.73 | 0.15 |
| Fertilizer application | 1 | 7.10 | 0.007 | 1.00 | 0.31 | 13.39 | < 0.000 | 0.06 | 0.79 |
aLRT = likelihood ratio test; VEF = variable entered first; VEL = variable entered last; DR = deviance reduction; P = probability of an χ2 value exceeding the deviance reduction; χ2 = chi-square; and df = degrees of freedom.