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Monilinia oxycocci
''Monilinia oxycocci'' (Woronin) Honey, (synonym ''Sclerotinia oxycocci''), common names Cranberry Cottonball, Cranberry Hard Rot, Tip Blight, is a fungal infection of the cranberry plant(''Vaccinium macrocarpon''). The tips of young flowering shoots wilt before they flower. Fruit that does form on the plant can then be infected by the asexual spores traveling through the plant, causing the berries to harden, turn cottony on the inside, and dry out instead of maturing. The berries are filled with a cotton-like fungus and are generally yellowish with tan stripes or blotches at maturity, making them unmarketable. It results in important economic impacts on many cranberry marshes, particularly in Wisconsin.
==Distribution==
Cottonball occurs on cranberry marshes in the Pacific Northwest and southeastern Canada, but is more common in Wisconsin. The disease has become much more problematic in Wisconsin since the 1970s “for reasons that are not known.”〔 Typically 2 to 10% of fruit in diseased beds is infected; if left unchecked the amount can exceed 40%.〔 Cottonball has been observed on all of the popular cranbery varieties in Wisconsin.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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