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Introduction
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Review of literature
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Distribution of clerotia of selerotium cepivorum in field soil
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Relationship between white rot severity and number of sclerotia of S.cepivorum in soil
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Material And Methods
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Experimental Results
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Density of Sclerotium Cepivorum Sclerotia in soil of Assiut Governorate fields
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Vertical Density of Sclerotia of S.cepivorum in certain Fields of Assiut Governorate
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Relationship between Density of s.cepivorum sclerrotia in soil and Disease severity
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Discussion
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Summary
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Literature Citied