Oregon State University Plant Clinic |
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Embellisia skin blotch on stored garlicCauseEmbellisia allii (Campanile) E.G. Simmons 1971 (= Helminthosporium allii Campanile 1924). Occurrence This fungal disease does not occur very frequently in Oregon, but can be disfiguring in those years when it does occur. SymptomsThe disease appears most frequently as irregular dark areas on the outer scales of the garlic heads, usually near the base of the bulb. Dark areas may form on the backs and sides of cloves within a head; in our experience, the fungus rarely infects anything but the scales. Red garlic is reportedly not as susceptible as white garlic, but is not immune. Disease Cycle The skin blotch fungus overwinters in plant debris, infested soil, and diseased cloves. This disease is more of a problem in wet years, in garlic which is stored wet, or garlic which is moist when packaged. In Japan this disease was common in supermarket garlic wrapped in plastic. Management
References David, J.C. 1991. Embellisia allii. IMI Descriptions of Fungi and Bacteria No. 1078, International Mycological Institute, Ferry Lane, Surrey, UK . Dugan, F.M. B.C. Hellier, and S.L. Lupien. 2006 Efficacy of fungicides against infections of garlic in Washington State. Phytopathology 97:S167 Dugan, F. M., B. C. Hellier, & S. L. Lupien. 2007. Pathogenic fungi in garlic seed cloves from the United State and China, and efficacy of fungicides against pathogens in garlic germplasm in Washington State. J. Phytopathology 155, 437-445 Latha, S. , Sathyanarayana, N. , Reddy, O. R. 2007. Interception of Embellisia allii in garlic bulbs imported from China. Indian Phytopathology , 2007 , Vol. 60 , No. 1 , pp. 126-127 Taniguchi, N., Kishi, T., Tohyama, A., & Tsuda, M. 1994. Bulb canker of garlic caused by Embellisia allii , newly found in Japan . Mycoscience 35:421-424.
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May 27, 2009
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