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Grape Shaping

Prepared by Corky Lovin, Mark Bell, Louise Ferguson and Ali Almehdi - UC Davis International Programs Shaping grapes involves a range of vine and bunch practices including training, trellising, pruning and dropping fruit. The objectives of each are: 1. Training and trellising (e.g., vertical shoot positioning.) – shape the vine to give a desired crop structure to facilitate operations (e.g., easier access for management of fruit and vines) and to provide a desired outcome (e.g., increased sunlight penetration, reduced humidity). 2. Pruning – cut grape canes during dormancy to control crop quantity and so improve crop quality. Too much fruit may give small grapes and delay harvest. 3. Dropping crop – remove grapes or bunches to improve uniformity of fruit size and harvest date.

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