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trellis system; trellising

A trellis system is simply a framework that supports grapevines as they grow, training them upward rather than letting them grown outward along the ground. Trellising not only keeps the vines off the ground but exposes both CANOPY and grape clusters to more sunlight and better air circulation. In the most basic terms, a trellising system consists of a row of posts or stakes anchored in the ground at various intervals and typically connected by taut wires on which the vines can be trained. Trellising is customized according to the vineyard site and grape variety. Trellis styles include: Single stakes (no wires—the vines are simply trained vertically); one-wire trellis, the vines trained on one horizontal wire strung between posts (used primarily for table grapes); two-wire trellis (with the wires about a foot apart), the most common system used for wine grapes; three-wire trellis (a foot apart), which offers more support points for the leaf canopy; and the V-shape Geneva Double Curtain, which is particularly good for vigorous vines because it opens the canopy outwards so the middle portion absorbs maximum sunlight. See also VITICULTURE.
Related Links: canopy management, canopy
© Copyright Barron's Educational Services, Inc.
1995 based on THE WINE LOVER'S COMPANION,
by Ron Herbst and Sharon Tyler Herbst.

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