Concentration (mg/ml)

Inhibition zone (mm)

P. syringae pv. tomato

X. oryzae pv. oryzae

Positive control

19 ± 0.5 a

18 ± 0.3 ab

Negative control

0 ± 0 e

0 ± 0 e

100

17.6 ± 0.3 b

20.5 ± 0.2 a

50

16.8 ± 0.1 b

18 ± 0.3 b

25

15 ± 0.5 c

16.5 ± 0.2 c

12.5

12.6 ± 0.3 d

13.1 ± 0.6 d