DISCUSSION
Fungal species belonging to the genus Trichoderma
are worldwide in occurrence and easily isolated from the soil.
The potential of Trichoderma species as bioconrol agents against
various plant diseases has been reported by several workers [17,
18]. In the present investigation, fungal antagonist ANR-1 isolate
caused highly significant reduction in tomato wilt incidence under
in vitro and in vivo conditions. The inhibitory effect of these
bioagents against tested pathogen was probably due to competition
and/or antibiosis.
Demands for in vitro effectiveness of Trichoderma
against species of Fusarium have been reported [19]. The
antagonist Trichoderma harzianum, T. coningi and T. viride were
reported to be equally antagonistic to F. udum under in vitro [20].
[21] reported that Trichoderma spp. successfully controlled
Fusarium spp. on cotton, wheat and muskmelon. Sesame seeds
treated with three isolates of T. viride reduced the pre- and postemergence
damping off caused by R. solani and F. oxysporum f.sp. sesami under pot culture and field conditions