Supported V

Training trials on pome and stone fruit demonstrate that V-shaped systems offer the potential to intercept more sunlight than vertical systems. One of the first V trellises to be widely tested was the Ta-tura. D. J. Chalmers and B. van den Ende conducted the original studies at the Tatura Research Station in Australia. Trellis frame angle is 60 degrees. Individual trees are trained to a V, or alternating trees are leaned to one side or the other along the row. Research shows that a thin canopy must be maintained for optimum light distribution. A modification of the Tatura is the MIA (for Murrumbidgee Irrigation Area), developed by R. J. Hutton. The trellis is an inverted Tatura that permits access on both sides of the canopy. Other successful supported V systems include the Y trellis tested extensively in New York, the G├╝ttinger V developed in Switzerland, and V and Y spindles, in which each tree is trained to a spindlebush.

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