Table 3.
FBG disease prevalence, incidence, and severity of FBG to independent factors in 2019 and 2020 cropping seasons
| Independent variable | Variable classes | No. of fields | Prevalence (%) | Incidence (%) | Severity (PSI) | ||
|---|---|---|---|---|---|---|---|
|
|
|
||||||
| Mean | Range | Mean | Range | ||||
| Year | 2019 | 283 | 72.4 | 51.7 | 1–100 | 19.3 | 0.2–100 |
| 2020 | 716 | 78.5 | 60 | 0–100 | 22.9 | 0.2–95 | |
| Regions | Oromia | 426 | 54 | 35.9 | 2–100 | 18.6 | 1–95 |
| Amhara | 483 | 95.7 | 78.1 | 0–100 | 22.7 | 0.2–91 | |
| Tigray | 90 | 83.3 | 51.2 | 5–100 | 32.8 | 1.6–100 | |
| Zones | N/Shewa (Oromia) | 137 | 83.9 | 57.8 | 2–100 | 33.9 | 1–95 |
| S/W/Shewa | 37 | 10.8 | 6.4 | 15–90 | 1.1 | 5–20 | |
| W/Shewa | 145 | 14.5 | 31.8 | 5–100 | 14.1 | 5–85 | |
| Arsi | 91 | 33 | 22.8 | 15–100 | 10.3 | 4–91 | |
| F/Special Zone | 16 | 62.5 | 29.1 | 15–90 | 16.3 | 5–70 | |
| N/Shewa (Amhara) | 160 | 95 | 71.6 | 0–100 | 24.6 | 0.2–86 | |
| S/Gondar | 152 | 98 | 91.1 | 1.2–100 | 21.7 | 1–91 | |
| S/Wollo | 171 | 94.2 | 72.7 | 0–100 | 21.9 | 0.2–85 | |
| S/Tigray | 90 | 83.3 | 51.2 | 5–100 | 32.8 | 1.6–100 | |
| Crop growth stage | Seedling | 14 | 78.6 | 35.7 | 5–100 | 15.1 | 5–46 |
| Vegetative | 136 | 88.2 | 64.6 | 1–100 | 17.2 | 0.2–90 | |
| Flowering | 415 | 66.7 | 52.8 | 0–100 | 17.6 | 0.2–100 | |
| Podding | 374 | 73.8 | 56.7 | 0–100 | 27.5 | 0.2–96 | |
| Maturity | 87 | 95.4 | 77.6 | 15–100 | 28.3 | 5–91 | |
| Crop density | Low | 201 | 77.6 | 61.6 | 2–100 | 27.9 | 0.2–100 |
| Medium | 518 | 72.8 | 50.5 | 0–100 | 22.2 | 0.4–95 | |
| High | 280 | 83.6 | 68.1 | 1–100 | 17.1 | 0.2–91 | |
| Cropping System | Rotation | 989 | 77.1 | 8.6 | 0–100 | 3.6 | 0.2–100 |
| Mono-cropping | 10 | 40 | 58.2 | 6–100 | 22.1 | 1–45 | |
| Slope of field | Low | 397 | 78.8 | 62.4 | 1–100 | 19.8 | 0.2–100 |
| Medium | 528 | 75 | 54.5 | 0–100 | 22.1 | 0.2–90 | |
| High | 74 | 78.4 | 55.2 | 0–100 | 31.6 | 5–91 | |
| Cropping pattern | Sole | 883 | 74.6 | 54.3 | 0–100 | 22.4 | 0.2–100 |
| Mixed | 116 | 93.1 | 83.6 | 3.3–100 | 17.7 | 0.2–76 | |
| Altitude | Low | 103 | 18.4 | 14.3 | 7.7–100 | 1.8 | 1–59 |
| Medium | 366 | 70.5 | 46.1 | 1.2–100 | 17.9 | 0.2–95 | |
| High | 530 | 92.5 | 74.1 | 0–100 | 28.5 | 0.2–100 | |
| Weed density | Low | 473 | 67.4 | 44.7 | 0–100 | 17.6 | 0.2–96 |
| High | 526 | 85.2 | 69.3 | 0–100 | 25.7 | 0.2–100 | |
| soil type | Cambisole | 667 | 78.4 | 61.1 | 0–100 | 21.8 | 0.2–100 |
| Vertisol | 312 | 73.1 | 50.3 | 2–100 | 21.4 | 0.2–90 | |
| Nitosol | 20 | 80 | 58.1 | 15–100 | 31.1 | 5–91 | |
| Fertilizer application | Inorganic | 473 | 66 | 51.4 | 1–100 | 16 | 0.4–96 |
| Organic | 74 | 87.8 | 70.9 | 0–100 | 27.1 | 0.2–94 | |
| Not applied | 452 | 86.3 | 62.1 | 0–100 | 27.2 | 0.2–100 | |
| Drainage method | Flat | 937 | 76.8 | 57.2 | 0–100 | 22.2 | 0.2–100 |
| Raised | 62 | 75.8 | 56.5 | 1–100 | 16.8 | 1–76 | |
| Crop nearby | Cereal | 830 | 75.1 | 55.1 | 0–100 | 21.3 | 0.2–100 |
| Legume | 154 | 89.6 | 74.1 | 2–100 | 26.1 | 0.2–86 | |
| Vegetable | 15 | 40 | 34.6 | 3–100 | 8.4 | 1–50 | |
| Fungicide | Sprayed | 474 | 62.2 | 46.7 | 1–100 | 9.3 | 0.2–80 |
| Unsprayed | 525 | 89.9 | 67.6 | 0–100 | 33.2 | 1–100 | |
FBG, faba bean gall; PSI, Percent Severity Index.