At (50, 30 and
10%) low concentrations, they all recorded poor performances. Minimum inhibitory concentration by T.
viride was 10%, T. polysporum 25%, T. hamatum and T. aureoviride were 30% each, and benlate
solution remained 50%. T. polysporum exhibited better control of the pathogen when compared with
other extracted water soluble compounds from Trichoderma species and benlate solution.