Topsin-M concentrations (ppm)

M. phaseolina

T. harzianum

Antagonistic ability **

linear growth (mm)

Reduction %

linear growth (mm)

Reduction %

linear growth (mm)

Reduction %

0

90 a*

-

90

-

60 bc

33.3

0.5

68 b

24.4

90

0.0

42 de

53.6

1

52 c

42.2

87

3.3

16 g

82.2

2

26 f

71.1

77

14.4

0 i

100

3

12 g

86.7

60

33.3

0 i

100

4

0 i

100

52

42.2

0 i

100

5

0 i

100

40

55.6

0 i

100

6

0 i

100

34

62.2

0 i

100

7

0 i

100

26

71.1

0 i

100

8

0 i

100

18

80.0

0 i

100

9

0 i

100

8

91.1

0 i

100

10

0 i

100

0

100

0 i

100

*Mean values within columns followed by the same letter are not significantly different (P ≤ 0.05)
*Antagonistic ability of T. harzianum against M. phaseolina [Reduction in growth of pathogenic fungus was calculated relatively to
the growth in control treatment (60 mm)]
Table 1: Effect of different concentrations of Topsin-M on the linear growth (mm) of M. phaseolina and T. harzianum and their influence on the antagonistic ability of the bioagent against the pathogenic fungus in vitro.