In this article:
The yield reductions associated with the harvest-pruning system of drying sultanas could not be attributed to a consistent effect on any of the components of yield. However, in several experiments berry number per bunch was reduced on harvest-pruned vines and in others there was a trend in this direction.
The cause of this reduction appeared to be flower number per inflorescence. Harvest-pruning and associated trellising treatments had only small effects on bud-burst and early shoot growth.
Harvest-pruning and Trellising of ‘Sultana’ Vines. II. Effects on early spring development
1977, Scientia Horticulturae, vol 7, pages 123-132
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