Terroir 2020 banner
IVES 9 IVES Conference Series 9 Podcasts – Terroir Congress 2020

Podcasts – Terroir Congress 2020

Abstract

All about “Australian grapevine stories”

Trailer: Australian grapevine stories

Narrator Andrew Caillard MW explores the wonderful and surprising story of grape vines in Australia. It starts with the ambitions of Georgian England and takes the listener on a four-part journey through the Victorian age, Federation and contemporary times. This easy listening, unstuffy and well-researched four-part series was recorded especially for the 13th Terroir Congress.

 

This trailer introduces the podcasts and acknowledges the key people behind the project.

Part 1: 1788 to 1820s – A race to the other side of the world

Ambitions for a wine industry in New South Wales were caught up in the British Government’s aspirations of expanding trade routes and wealth creation. From 1788 to the 1820s, colonial wine was a cottage industry but the pioneers from Sir Joseph Banks in London to John Macarthur and nurseryman Thomas Shepherd in Sydney believed that Australia could become the France of the Southern Hemisphere. But the first years of settlement were not without political troubles and serious economic challenges.

Part 2: 1820s to 1855 – Convictions and transportation

There were many new importations of vitis vinifera during the 1820s to 1855. The most famous was the remarkable collection of grape vines imported into New South Wales by James Busby in 1832. William Macarthur of Camden Nurseries becomes a highly influential figure supplying many of Australia’s earliest pioneers with vine stock material for planting in the Australian colonies. This was also the dawn of the steam age, the beginning of the gold rush (1851) and the Universal Exhibition in Paris (1855).

Part 3: 1855 to 1960s – Grand dreams and boom-bust-boom

Fortunes were mixed after the great promise of the 1860s and early 1870s. Many of Australia’s greatest 19th Century vineyards were planted during this time. Economic, social and agricultural challenges hampered progress. The arrival of Phylloxera in Victoria in 1875 was met with a scorched earth policy. But South Australia’s quarantine laws protected the vast plantings of grape vines especially around Adelaide, McLaren Vale, Barossa and the Clare Valleys. Australian Burgundy boomed in the 1880s and 1890s. After the Second World War plant breeding programmes were introduced to improve colonial vinestock material, while only a trickle of new clones and selections were permitted into Australia.

Part 4: 1970s to Today – A step back into the future

The golden period of modern wine was enabled by the dreams and hard work of past generations. While 19th Century vinestock reflects the romance and dramas of the Georgian Victorian ages, new material is required to build on those extraordinary efforts. The pursuit for ideal chardonnay clones led to the arrival of 19th Century Californian vinestock material into Australia. In the meantime, alternative varieties might not be that alternative given their history in Australia. Australia’s colonial vinestock heritage is one of the four corner stones of our modern wine industry.

© graphical sources: Part 3: Henschke Wines – Dragan Radocaj, Part 4: Leeuwin Estate, Margaret River

Publication date: March 26, 2021

Issue: Terroir 2020

Type : Podcast

Tags

IVES Conference Series | Podcast | Terroir 2020

Related articles…

Implication of secondary viral infections on grafting success rated in nurseries

Grapevine grafting is a complex process that since the establishment of phylloxera has become mandatory for grapevine. Grafting success in grapevine nurseries considerably varies among years and batches with most variety/rootstock combinations reach a high success rate (between 75% and 90%), but some combinations show lower success rates of around 40-50%. The causes of this variation are unknown, although biotic stresses like those caused by some viral infections have been demonstrated to affect the process. European certification schemes for the vegetative propagation of the vine include five major viruses (Arabis mosaic virus, Grapevine Fanleaf Virus, Grapevine Fleck Virus, and Grapevine-associated Leafroll Virus 1 and 3).

Uncovering the effectiveness of vineyard techniques used to delay ripening through meta-analysis

One of the most concerning trends associated with increasing heat and water stress is advanced ripening of grapes, which leads to harvesting fruit at higher sugar concentrations but lacking optimal phenolic (i.e. color and mouthfeel) and aromatic maturity. Mitigation techniques for this phenomenon have been studied for many years and practices to delay sugar accumulation have been identified, including antitranspirants, delayed pruning and late-source-limitation techniques. Evaluation of the efficacy of these vineyard practices has occurred across a wide range of environments, vintages, varieties and growing conditions. To assess the broader efficacy of these three vineyard practices, which are easy-to-implement and cost-effective, a meta-analytic approach was adopted using data retrieved from 43 original studies.

IMPACT OF MANNOPROTEIN N-GLYCOSYL PHOSPHORYLATION AND BRANCHING ON WINE POLYPHENOL INTERACTIONS WITH YEAST CELL WALLS

Yeast cell walls (CWs) may adsorb wine components with a significant impact on wine quality. When dealing with red wines, this adsorption is mainly related to physicochemical interactions between wine polyphenols and cell wall mannoproteins. However, mannoproteins are a heterogeneous family of complex peptidoglycans including long and highly branched N-linked oligosaccharides and short linear O-linked oligosaccharides, resulting in a huge structural diversity.

INSIGHT THE IMPACT OF GRAPE PRESSING ON MUST COMPOSITION

The pre-fermentative steps play a relevant role for the characteristics of white wine [1]. In particular, the grape pressing can affect the chemical composition and sensory profile and its optimized management leads to the desired extraction of aromas and their precursors, and phenols resulting in a balanced wine [2-4]. These aspects are important especially for must addressed to the sparkling wine as appropriate extraction of phenols is expected being dependent to grape composition, as well.

How to improve the mouthfeel of wines obtained by excessive tannin extraction

Red wines felt as astringent and bitter generally show high content of tannins due to grape phenolic compounds’ extraction in the maceration process. Among different enological practices, mannoproteins have been shown to improve the mouthfeel of red wines (1) and the color (2,3). In this work, we evaluated the effect of mannoproteins on the mouthfeel profile of Sangiovese wines obtained by excessive tannin extraction.