Forever Young? Late Shoot Pruning Affects Phenological Development, Physiology, Yield and Wine Quality of Vitis vinifera cv. Malbec

‘Malbec’ grapevines commonly have high yield, thus intermittently negatively affecting wine quality parameters. Here, we describe the use of late shoot pruning (LSP) practice applied for improvement. We examined effect timing LSP on vines grown in Mediterranean conditions during three consecutive seasons (2016–2018) Israel. The treatment applications (applied one, two and weeks after bud break) were compared with cluster-thinned, winter-pruned (WP + T) standard winter (WP). postponed break target buds but did not a temporal onset veraison. Midday stem water potential was less negative stomatal conductance net CO2 assimilation rate higher vines. This led to substantial reduction number clusters crop yield. Finally, positively affected by applying treatment. Performing inexpensive at precise burst found save labor, decrease yield improve grape application should be considered adequate varieties as significant tool enhanced effectiveness vine growing warm regions.