Effect of some Biological Agents on Pathogenicity of some Root Pathogenic Fungi

Results of pathogenicity showed that the three fungi Fusarium culmorum, Cylindrocarpon spp. and Bipolaris spp. were the faster fungi inoculated in the emergence of symptoms as pathological symptoms in both strawberry varities Hapil and Festival. Hapil was more sensitive than Festival agents on the three studied fungi. The results indicate that the addition of biological agent T. harzianum and P.aerogenosa and fungicides Azadirachtin to the three fungi F. culmorum, Cylindrocarpon spp. and Bipolaris spp. caused a significant reduction of the pathogenicity compared with fungi alone, and the results indicated that the biological agent efficiency of high antagonisms ability against the three fungi F. culmorum, Cylindrocarpon spp. and Bipolaris spp., and the results indicated the ability of biological agent on P. aerogenosa agents the fungus Cylindrocarpon spp., and fungicide Azadirachtin showed high antagonism against Cylindrocarpon spp. Hapil Bipolaris spp. Cylindrocarpon spp. .Festival Pseudomonas aerogenosa Trichoderma harzianum Bipolaris spp. Cylindrocarpon spp. F. culmorum Azadirachtin . Bipolaris spp. Cylindrocarpon spp. F. culmorum Azadirachtin Cylindrocarpon spp. P. aerogenosa .Cylindrocarpon spp.