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

Abstract

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 pathologicalsymptoms in both strawberry varities Hapil and Festival. Hapil was more sensitive than Festival agentson 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. andBipolaris spp. caused a significant reduction of the pathogenicity compared with fungi alone, and theresults indicated that the biological agent efficiency of high antagonisms ability against the three fungiF. culmorum, Cylindrocarpon spp. and Bipolaris spp., and the results indicated the ability ofbiological agent on P. aerogenosa agents the fungus Cylindrocarpon spp., and fungicide Azadirachtinshowed high antagonism against Cylindrocarpon spp.