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Winkler vine
The Winkler Vine was an example of large-vine grape culture. The vine was named after Albert J. Winkler, Chair of the Department of Viticulture and Enology (1935–1957) at University of California, Davis. Planted in 1979, the Winkler vine was a ''Vitis vinifera'' cv. Mission, grafted on to a ''Vitis rupestris'' St George rootstock. A great deal of research has been carried out on pruning, training and vine size; by researchers such as: Ravaz, Winkler, Shaulis, Koblet, Howell, Carbonneau, Smart & Clingeleffer. Minimal pruning is a pruning/training system adapted from the principles of big-vine theory.
==History==
The Mission grape cultivar was originally bought to South America from Spain by Catholic missionaries and was introduced into California in the 18th century. Historically Mission was the most widely planted cultivar in California, up to the 1850s.
The Winkler Vine was trained on a 60x60ft steel arbour, covering 1/12 of an acre and was capable of producing over a tonne of fruit. The Winkler vine was damaged by a tractor 'early in its life' and carried a large canker; eventually the vine became infected with the wood rot, Eutypa, causing its death in spring 2008.
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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