The effect of dormant pruning on the carbohydrate metabolism of Vitis vinifera

Abstract does not appear. First page follows.

In previous papers⁽²⁾, ⁽³⁾, ⁽⁴⁾ experiments were described, the results of which showed: (1) that dormant2 pruning depresses the capacity of the vines for total growth; (2) that dormant pruning depresses the capacity of the vines for fruiting; (3) that dormant pruning reduces the quality of the fruit of some varieties; and (4) that bearing depresses the capacity of the vines for growth.

The purpose of this paper is to describe the effect of dormant pruning on the carbohydrate metabolism of the vine and to discuss the influence of this effect on growth and fruiting.

Types of Pruning Used

The plan of the plantings and the various types of pruning employed were those described in detail in the earlier papers.⁽²⁾, ⁽³⁾ The types of pruning used on the vines from which samples for analysis were taken were:

Non-pruned, part crop: no pruning. All clusters in excess of what was thought necessary for a good crop of fruit were removed before blooming.