Skip to main content

Table 4 Analysis of deviance, natural logarithms of odds ratio, and standard error of added variables in a reduced model analyzing septoria tritici blotch incidence

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

Added variable

Residual deviance

df

Deviance reduction

Pr > χ2

Variable class

Estimate loge

SE

Odds ratio

Intercept

3752.19

    

− 0.73

0.37

0.48

District

3217.99

4

534.21

< .0001

Jama

− 0.74

0.34

0.48

Wadila

− 0.35

0.15

0.70

Woreilu

− 0.39

0.31

0.68

Dessie Zuria

− 1.92

0.31

0.15

Meket

0.00

0.00

1

Altitude

3089.44

1

128.55

< .0001

≤ 2700 masl

0.61

0.12

1.85

> 2700 masl

0.00

0.00

1

Variety

2157.84

10

931.59

< .0001

Abesha

0.36

0.28

1.43

Enat

0.34

0.33

1.41

Enzosh

0.10

0.35

1.10

Firno

0.42

0.37

1.52

Gojam

− 0.10

0.36

0.91

Gundile

− 0.07

0.23

0.93

Key

− 0.21

0.33

0.81

Laste

0.38

0.24

1.47

Nech

− 1.12

0.46

0.33

Nech jiru

− 0.32

0.13

0.73

Tikur jiru

0.00

0.00

1

Growth stage

2104.07

3

53.77

< .0001

Early flowering

− 0.35

0.12

0.70

Flower

− 0.20

0.31

0.82

Late milk

0.15

0.19

1.16

Milk

0.00

0.00

1

Plant population

1629.71

2

474.36

< .0001

High (> 210 plants m−2)

0.44

0.09

1.56

Low (< 140 plants m−2)

− 0.93

0.12

0.39

Medium (141–210 m−2)

0.00

0.00

1

Planting date

1596.67

4

33.04

< .0001

August

0.41

0.13

1.50

Early July

0.02

0.12

1.02

June

0.77

0.15

2.16

Late July

0.13

0.14

1.14

Mid-July

0.00

0.00

1

Previous crop

1374.62

2

222.05

< .0001

Barley

− 1.75

0.18

0.17

Legume

− 1.18

0.12

0.31

Tef

− 0.59

0.12

0.56

Wheat

0.00

0.00

1

Weed population

1360.73

2

13.88

0.001

High (> 61 weeds m−2)

0.58

0.14

1.79

Low (< 40 weeds m−2)

0.42

0.11

1.53

Medium (41–60 weeds m−2)

0.00

0.00

1

Soil type

1301.05

2

59.69

< .0001

Red

0.94

0.15

2.55

Gray

0.79

0.11

2.21

Black

0.00

0.00

1

  1. df degrees of freedom, Pr probability of a χ2 value exceeding the deviance reduction, SE standard error