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Table 2 Prevalence, mean incidence, and severity of septoria tritici blotch on durum wheat under different independent variables

From: Epidemiological factors of septoria tritici blotch (Zymoseptoria tritici) in durum wheat (Triticum turgidum) in the highlands of Wollo, Ethiopia

Variable Variable class Prevalence (%) Septoria tritici blotch
Incidence Severity
Mean SD Min Max Mean SD Min Max
District Dessie Zuria 40 16.7 21.9 0 50 2.5 3.6 0 9.9
Jama 80 34.0 22.0 0 70 6.2 5.2 0 14.8
Meket 80 55.3 40.7 0 100 21.7 22.1 0 59.3
Wadila 87 42.7 27.1 0 90 14.2 12.7 0 39.5
Woreilu 80 38.0 26.2 0 80 12.3 13.2 0 49.4
Altitude ≤ 2700 masl 75.6 35.36 25.40 0 80 8.35 9.72 0 49
> 2700 masl 70.6 39.70 35.80 0 100 15.0 18.0 0 59
Variety Abesha 100 50.0 12.6 30 60 11.0 4.7 3.7 17.3
Enat 33 10.0 15.5 0 30 0.8 1.3 0 2.5
Enzosh 71 32.9 29.3 0 70 9.9 10.8 0 29.6
Firno 100 74.3 17.2 50 100 28.4 13.0 9.9 49.4
Gojam gura 33 10.0 17.3 0 30 0.8 1.4 0 2.5
Gundile 67 31.7 27.1 0 70 11.1 11.9 0 29.6
Key sindie 77 41.5 37.8 0 100 16.2 20.8 0 59.3
Laste 89 51.1 28.5 0 100 16.7 18.8 0 49.4
Nech 33 6.7 11.5 0 20 0.8 1.4 0 2.5
Nech jiru 70 28.0 24.4 0 60 5.6 5.8 0 14.8
Tikur jiru 80 34.0 26.1 0 70 5.2 4.5 0 12.3
Planting date August 53 24.0 25.9 0 70 6.2 8.8 0 29.6
Early July 84 43.2 28.7 0 100 13.7 14.5 0 49.4
June 92 66.7 32.0 0 100 27.1 21.0 0 59.3
Late July 67 28.7 23.9 0 60 4.6 5.3 0 17.3
Mid-July 71 27.9 26.4 0 70 7.6 8.6 0 29.6
Previous crop Barley 50 17.5 20.5 0 50 2.6 37 0 9.9
Legume 50 17.5 23.4 0 80 4.0 6.5 0 25.9
Tef 67 30.0 28.7 0 70 7.4 9.1 0 25.9
Wheat 92 53.7 27.0 0 100 18.0 16.7 0 59.3
Growth stage Early flower 65 27.1 24.9 0 70 6.1 8.1 0 29.6
Flower 100 30.0   30 30 7.4   7.4 7.40
Late milk 37 17.5 24.3 0 50 3.1 4.3 0 9.9
Milk 82 44.3 31.3 0 100 14.6 16.2 0 59.3
Plant population High (> 210 plants m−2) 100 60.0 23.2 20 100 18.9 17.2 2.5 59.3
Low (< 140 plants m−2) 47 26.5 29.2 0 70 6.0 8.8 0 25.9
Medium (141–210 m−2) 66 32.3 32.2 0 100 10.7 16.0 0 59.3
Weed population High (> 61 weeds m−2) 100 73.6 22.9 30 100 29.7 17.6 7.4 59.3
Low (< 40 weeds m−2) 59 23.4 23.6 0 70 5.4 7.8 0 29.6
Medium (41–60 weeds m−2) 90 48.0 27.1 0 100 14.5 14.9 0 49.4
Soil type Red 94 58.3 30.0 0 100 18.9 15.7 0 49.4
Gray 79 44.2 31.5 0 100 17.3 18.8 0 59.3
Black 60 23.9 23.1 0 70 4.8 6.4 0 29.6
  1. SD standard deviation