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

Yishai Netzer, Yedidya Suued, Matanya Harel, Danielle Ferman-Mintz, Elyashiv Drori, Sarel Munitz, Maria Stanevsky, José M. Grünzweig, Aaron Fait, Noa Ohana-Levi, Gil Nir, Gil Harari

Research output: Contribution to journalArticlepeer-review

Abstract

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

Original languageEnglish
Article number605
JournalAgriculture (Switzerland)
Volume12
Issue number5
DOIs
StatePublished - 1 May 2022

Keywords

  • Vitis vinifera
  • cluster thinning
  • late shoot pruning
  • phenology
  • photosynthesis
  • red wine quality
  • yield

ASJC Scopus subject areas

  • Food Science
  • Agronomy and Crop Science
  • Plant Science

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