head training, a form of vine training whereby the trunk has a definite head, or knob, consisting of old wood rather than arms of a cordon. Head-trained vines are normally subject to cane pruning, but may, after spur pruning, be described as gobelet. The head may be anywhere between 40 cm/1.25 ft and 1 m/3.3 ft from the ground. The guyot system is a common cane-pruned form of head training.
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