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Egyptian Journal of Biological Pest Control

Table 7 Reduction in rotting necrosis spots diameter and disease severity on infected Erwinia amylovora Slices fruits pear and treated with streptomycin and phages compared to control ones

From: Isolation and characterization of three bacteriophages infecting Erwinia amylovora and their potential as biological control agent

Treatments

*Rating index

Phage infectivity

No. of inf. slices

0

1

2

3

4

5

% Inf

**% red

% DS

Control healthy

0

0

0

0

0

0

0

0

0

0

Control infected bacteria

10

0

0

0

1

3

6

100

0

90

Infected bacteria

 EAP1

6

4

1

1

2

2

0

60

62.739

34

 EAP2

4

6

1

2

1

0

0

40

74.089

16

 EAP3

8

2

0

4

2

2

0

60

44.309

44

 Cocktail phage

2

8

0

0

2

0

0

20

77.287

12

 Streptomycin

3

7

0

2

1

0

0

30

74.723

14

  1. *Rating index: O = no necrosis, 1 = incomplete necrosis of the slice, 2 = one-quarter complete necrosis of slice, 3 = one-half complete necrosis of slice, 4 = Three -quarter complete necrosis of slice, 5 = Complete necrosis of the slice
  2. **% reduction = Calculated mean of Diameter of rotting (Cm) from 10 replicates
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