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Table 2 Interaction effects of cultural management practices and ginger varieties on bacterial wilt (R. solanacearum) initial and final mean disease incidence (%) at Teppi and Jimma, Ethiopia, during the 2017 main cropping season

From: Yield loss of ginger (Zingiber officinale) due to bacterial wilt (Ralstonia solanacearum) in different wilt management systems in Ethiopia

Treatment combination1

Mean disease incidence (%) at Teppi2

Mean disease incidence (%) at Jimma2

Local

Boziab

Local

Boziab

PDIi

PDIf

PDIi

PDIf

PDIi

PDIf

PDIi

PDIf

Control

15.79a

79.47a

14.49a

79.76a

15.46a

80.44a

15.21a

77.15c

L

9.65cd

63.02d

6.48f

48.74g

8.02ef

52.75fg

6.93ef

51.07gh

F

11.91b

58.88e

9.64cd

64.47d

13.20bc

64.45d

11.73c

63.60d

S

14.37a

75.24b

15.30a

77.87a

14.94a

78.92ab

14.40ab

75.21bc

L + F

9.89c

58.88e

7.88ef

64.48d

7.86ef

42.04k

7.41ef

46.96ij

L + S

9.41cd

75.24b

10.00c

52.15f

9.93d

54.72ef

8.33e

47.90ij

F + S

14.70a

69.44c

9.60cd

64.46d

12.72c

64.08d

11.84c

55.71e

L + F + S

8.25de

49.03g

7.40ef

45.85h

7.20ef

46.61j

6.44f

49.75hi

LSD (0.05)

 

2.19

1.02

 

ns

2.81

  

CV (%)

 

2.20

7.84

 

8.93

2.80

  
  1. 1L = lemon grass; F = fertilizer; S = soil solarization; L + F = lemon grass with fertilizer application; L + S = lemon grass with soil solarization; F + S = fertilizer application with soil solarization; and L + F + S = lemon grass with fertilizer application and soil solarization
  2. 2PDIi = percent mean disease incidence at 45 and 60 days after planting (DAP) at Teppi and Jimma, respectively, and PDIf = percent mean disease incidence at 150 DAP. ns nonsignificant. Means followed by same letter(s) within adjacent columns of same parameter under each variety are not significantly different at 5% level of significance