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The experiments found trends towards slight increases in crop despite smaller bunch weight. With downward arching vine performance was not greatly affected, but distribution of growth and yield along the cane was modified. Upward arching gave similar performance wrapping and showed no commercial promise.
Harvest pruning was faster when arched downward, but gave no quality difference in the trellis dried fruit. Winter pruning was speeded up by up to one half of normal pruning time. It is concluded that pruning Sultana vines by arching canes downwards lead to several beneficial changes and can achieved without major changes to the trellis..
Pruning Sultana Vines by the Arched Cane System
1987, Australian Journal of Experimental Agriculture and Animals Husbandry, vol 18, month 4, pages 301 – 308
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