Terroir 2020 banner
IVES 9 IVES Conference Series 9 Developing and assessing different cordon establishment techniques for long-term vineyard management

Developing and assessing different cordon establishment techniques for long-term vineyard management

Abstract

Aim: The aim of this research is to quantify the impacts of different cordon establishment techniques on vine health and longevity. It is hypothesised that wrapping developing cordon arms tightly around the cordon wire will cause a constriction of the vascular system, becoming worse over time and disrupting the flow of water and nutrients.

Methods and Results: Training methods including wrapping the cordon tightly around the cordon wire, securing the cordon on top of the wire, and weaving the cordon through a plastic clip system, among others were applied to Cabernet Sauvignon and Shiraz grapevines at two commercial growing sites. At one site a length adjustment was performed on canes selected as permanent cordon arms based on their apparent vigour. Areas of assessment include measurements of vegetative growth, canopy architecture, and yield components, as well as physiological measurements including non-structural carbohydrate status and the microscopic examination of xylem morphology. Susceptibility to fungal trunk diseases is also being investigated. Early results indicate a significantly lower concentration of sugar, starch, and total non-structural carbohydrates in cane samples collected from the distal portion of arms woven through the plastic clip system after one growing season. Additionally, measurements of circumference and pruning weight of the intermediate sections of the cordons were significantly greater in vines which received length adjustments than those that didn’t receive adjustments.

Conclusions: 

Measurements of non-structural carbohydrate status suggest that the use of the plastic clip system may be beneficial in promoting the translocation of carbohydrates from the distal portion of the arm to perennial structures for overwintering. The increase in vegetative growth observed in the vines which received length adjustments suggests that this method may be beneficial in encouraging the growth of more numerous, healthy spur positions.

Significance and Impact of the Study: Suitable vineyard management strategies are needed to minimise the occurrence of cordon decline and dead arm symptoms. Understanding the potential benefits of adopting cordon establishment techniques which avoid constriction of the vines’ vasculature will provide vineyard managers with a strategy aimed at improving vineyard health and longevity.

DOI:

Publication date: March 25, 2021

Issue: Terroir 2020

Type : Video

Authors

Patrick O’Brien1, Roberta De Bei1, Cassandra Collins1,2*

1The University of Adelaide, School of Agriculture, Food and Wine, Waite Research Institute, PMB 1 Glen Osmond, 5064, South Australia, Australia
2ARC Industrial Transformation Training Centre for Innovative Wine Production, Waite Research Institute, PMB 1 Glen Osmond, 5064, South Australia, Australia

Contact the author

Keywords

Cordon, constriction, vascular system, trunk disease, decline

Tags

IVES Conference Series | Terroir 2020

Citation

Related articles…

HOW DOES ULTRASOUND TREATMENT AFFECT THE AGEING PROFILE OF AN ITALIAN RED WINE?

Many wine styles require moderate or extended ageing to ensure optimal consumer experience. However, few consumers have the interest or ability to age wine themselves, and holding wine in optimal conditions for extended periods is expensive for producers. A study was conducted on the use of ul-trasound energy on wine, with particular reference to its impact on sensory and chemical profiles. The OIV has authorised the use of ultrasound for processing crushed grapes (must) in Resolution OENO 616-2019, but not yet for finished wine1,2.

Impact of addition of fumaric acid and glutathion at the end of alcoholic fermentation on Cabernet-Sauvignon wine

Viticulture and oenology face two major challenges today, climate change and the reduction in the use of inputs. Climate change induces low acidity and microbiologically less stable wines

Can wine competition awarded points be correlated with wine chromatic and aromatic composition?

The quality of wine is difficult to define. This is most certainly accredited to everyone´s different perception of quality. Some of the indicators of high-quality wines are complexity, balance, color and intensity. Color is one of the most crucial attributes of quality, not only for the obvious implications for their perception but also because they are indicators of other aspects related to its aroma and taste. Phenolic compounds are the main responsible for wine color, being anthocyanin and tannins the most determinant compounds in red wines. In addition to color, wine aroma is another important attribute linked with quality and consumer preferences.

NMR profiling of grape musts from some italian regions

With wine fraud, being a widespread problem [1], the need for more sophisticated and precise analytical methods of its detection remains ever persistent.

Grape texture characteristics are linked to one major qtl

Berry texture and berry skin mechanical properties have high agronomic importance, related to quality and marketing requirements of wine, table and raisin grapes.