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White Rot of Garlic and Onion (Causal Agent, Sclerotium cepivorum): A Status Report from the Pacific Northwest

S. L. Lupien, B. C. Hellier, F. M. Dugan, L. G. Skoglund, and K. F. Ward

June 2013

Review

This review presents a synopsis of published prior occurrences and distribution of white rot of garlic and onion in the Pacific Northwest, some recent novel records, regulations of various state departments of agriculture, and briefly comments on various challenges and prospects for successful management. Although diagnosis of the agent via symptoms and characteristic sclerotia is relatively reliable, morphologically similar, closely related species exist, so the authors also present a protocol for identification via ITS sequence analysis.

doi:10.1094/PHP-2013-0619-01-RV

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