Terroir 2012 banner
IVES 9 IVES Conference Series 9 Viticultural practices: past, present and future

Viticultural practices: past, present and future

Abstract

Practices in viticulture have greatly evolved in the last five decades. There were three objectives: improvement in the quality of the products, reduction in the production costs through mechanization, and protection of the environment. In terms of soil management, the combination of different techniques such as soil tillage, chemical weeding and cover-cropping, allowed to reach these three objectives in most cases. Insuring an adequate nitrogen supply to the grapevine was proved to play a key role, since nitrogen deficiency could impair the wine quality. The role of integrated water supply was pointed out, since moderate water restriction was favourable for the wine quality. In terms of vine training, a special interest was given to the winter pruning, keeping in mind the respect for the sap flows and trying to limit the expansion of the wood diseases, since the entirely mechanical pruning was rather inconclusive. Thresholds of leaf/fruit ratios were established and the canopy management during the summer such as leaf removal and shoot tipping were adapted accordingly. The objective was also to minimise the risk of diseases. The control of the yield has become one of the main concerns in viticulture. Although cluster thinning before maturation used to be unimaginable, it is today a common practice in all the vineyards concerned about wine quality and vine longevity. The concept of sustainability will go on influencing the evolution of the practices in viticulture.

DOI:

Publication date: October 1, 2020

Issue: Terroir 2012

Type: Article

Authors

François MURISIER, Vivian ZUFFEREY, Jean-Laurent SPRING

Station de recherche Agroscope Changins-Wädenswil ACW, CH-1260 Nyon

Contact the author

Keywords

soil and water management, vine management, yield, quality

Tags

IVES Conference Series | Terroir 2012

Citation

Related articles…

Physiological and growth reaction of Shiraz/101-14 Mgt to row orientation and soil water status

Advanced knowledge on grapevine row orientation is required to improve establishment, management and outcomes of vineyards on terroirs with different environmental conditions (climate, soil, topography) and in view of a future change to more extreme climatic conditions. The purpose of this study was to determine the combined effect of row orientation, plant water status and ripeness level on the physiological and viticultural reaction of Shiraz/101-14 Mgt.

Effects of mechanical leafing and deficit irrigation on Cabernet Sauvignon grown in warm climate of California

San Joaquin Valley accounts for 40% of wine grape acreage and produces 70% of wine grape in California. Fruit quality is one of most important factors which impact the economical sustainability of farming wine grapes in this region. Due to the recent drought and expected labor cost increase, the wine industry is thrilled to understand how to improve fruit quality while maintaining the yield with less water and labor input. The present study aims to study the interactive effects of mechanical leafing and deficit irrigation on yield and berry compositions of Cabernet Sauvignon grown in warm climate of California.

The effects of cane girdling on berry texture properties and the concentration of some aroma compounds in three table grape cultivars

The marketability of the table grapes is highly influenced by the consumer demand; therefore the market value of the table grapes is mainly characterized by its berry size, colour, taste and texture. Girdling could cause accumulation of several components in plants above the ringing of the phloem including clusters and resulting improved maturity. The aim of the experiments was to examine the effect of girdling on berry texture characteristics and aroma concentration.

Application of a fluorescence-based method to evaluate the ripening process and quality of Pinot Blanc grape

The chemical composition of grape berries at harvest is one of the most important factors that should be considered to produce high quality wines. Among the different chemical classes which characterize the grape juice, the polyphenolic compound, such as flavonoids, contribute to the final taste and color of wines. Recently, an innovative non-destructive method, based on chlorophyll fluorescence, was developed to estimate the phenolic maturity of red grape varieties through the evaluation of anthocyanins accumulated in the berry skin. To date, only few data are available about the application of this method on white grape varieties.

Different yield regulation strategies in semi-minimal-pruned hedge (SMPH) and impact on bunch architecture

Yields in the novel viticulture training system Semi-Minimal-Pruned Hedge (SMPH) are generally higher compared to the traditional Vertical Shoot Positioning (VSP). Excessive yields have a negative impact on the vine and wine quality, which can result in substantial losses in yield in subsequent vintages (alternate bearing) or penalties in fruit quality. Therefore yield regulation is essential. The bunch architecture in SMPH differs from VSP. Generally there is a higher amount but smaller bunches with lower single berry weights in SMPH compared to VSP.