Top Wire Cordon (TWC) – Training System Diagram
When selecting a training or pruning system be sure to consider the growth habit of your vines and the required maintenance of each system. Top wire cordon (TWC) is arguably the most efficient training system for grapes, especially for procumbent or downward growing cultivars, especially those not prone to late season fruit rots due to shading of the fruiting zone. Summer labor is much less than that required with other training systems as shoot positioning and leaf pulling are generally not required. Contained within this link is a diagram and accompanying text detailing the required care for top wire cordon during years 1 through 4.
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