الفهرس 
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Abstract
Damping-off and root-rot diseases of sunflower plants caused by different fungi i.e. ,Fusarium Solani,Rhizoctonia solani and macrophomina phaseolina.The histopathological studies has been also carried-out to reveal the effect of the oathogens on tissues of sunflower.The effect of different fungicides on the fungal growth and their enzyme activities were conducted. under laboratory conddition. on the other hand, controlling the disease incidence under greenhouse conditions, were also investigated.