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the present studies were conducted with the objectives to (I) Survey on S. cepivorum causing onion White rot in Dakahlia governorate at the first time in Egypt. (II) Determine the effects of antagonistic fungi (III) Determine the effects of antagonistic bacteria (IV) Determine the effects of some essential oil (V) Determine the effects of some plant extracts (VI) Determine the effects of fungicides on epidemics of white rot of onion in north Egypt.

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I´m Amany Saad researcher in Mansoura University, M.Sc.Agriculture, plant pathology, Plant Pathology Dept.,Faculty of Agriculture,Mansoura University,Egypt.

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