Six isolates of actinomycetes capable of growing in the presence of fungicide kocide 101 were isolated from soil samples, cultivated with faba bean plant. Isolate T118 was the only organism that tolerated all used concentration of the applied fungicide. The same isolate was found to be the most active one for controlling the chocolate spot disease. the radial growth of the pathogen (botrytis fabae) on agar plates(72%),was reduced. On using detached leaves and potted plants(c-v Giza 3), isolate T118 was found to be the best for controlling the pathogen. The disease severity was reduced to 0.6 and 2.0 compared to control 7,2 and 9.0respectively.the isolate T118 of actinomycetes was identified as a species related to the genus streptomyces named s.violaceus |
