 IVES 9 IVES Conference Series 9 Macrowine 9 Macrowine 2021 9 Grapevine diversity and viticultural practices for sustainable grape growing 9 Within-vineyard spatial variation impacts methoxypyrazine accumulation in the rachis of Cabernet-Sauvignon

Within-vineyard spatial variation impacts methoxypyrazine accumulation in the rachis of Cabernet-Sauvignon

Abstract

AIM: To investigate the impact of spatial variation in vine vigour on the accumulation of methoxypyrazines in the rachis of Cabernet-Sauvignon. Cabernet-Sauvignon rachis has been shown to contain significantly higher concentrations of 3-isobutyl-2-methoxypyrazine (IBMP) than that found in berry material. IBMP is readily extracted from rachis during fermentation and can impact the flavour profile of the produced wine1.

METHODS: Cabernet-Sauvignon vines (n = 105) grown on common rootstocks in Coonawarra, South Australia, were georeferenced and 6 bunches were harvested from each vine at maturity in 2020. Berries were removed and the rachis was analysed for IBMP by GC-MS/MS. Pruning weights were recorded as an indicative measure of vegetative growth over the past season. Visualisation and analysis of map layers was achieved through linear regression models and k-means clustering with the Precision Agriculture Tools plugin2 for QGIS software suite3.

RESULTS: Georeferenced maps of vine vigour and IBMP concentration in rachis showed similar spatial variance and a clear relationship between the two variables was evident across the vineyard. k-Means clustering revealed 3 distinct zones identified as high, medium, or low in both IBMP levels and vine vigour. Although rootstock influenced vine vigour, rootstock effects were much less than the variation in vine vigour caused by inherent vineyard variability, most likely variation in soil depth4. Linear regression between vine vigour and IBMP in rachis showed a statistically significant relationship (p < 0.001) and highlighted increases in vine vigour, which increased canopy size and decreased porosity, resulted in an increase of IBMP in rachis.

CONCLUSIONS

Vine vigour significantly correlates with IBMP in Cabernet-Sauvignon rachis. Their similar patterns of within-vineyard variation provide opportunities for grape growers to implement targeted management of vineyards in a zonal fashion.

DOI:

Publication date: September 2, 2021

Issue: Macrowine 2021

Type: Article

Authors

Ross Sanders

Ross, SANDERS, Australian Research Council Training Centre for Innovative Wine Production, The University of Adelaide, and Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food,Paul, BOSS, Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, and Australian Research Council Training Centre for Innovative Wine Production, The University of Adelaide Dimitra, CAPONE, Australian Research Council Training Centre for Innovative Wine Production, The University of Adelaide Catherine, KIDMAN, Wynns Coonawarra Estate Rob, BRAMLEY, Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food David, JEFFERY, Australian Research Council Training Centre for Innovative Wine Production, The University of Adelaide

Contact the author

Keywords

coonawarra, georeferenced, ibmp, rootstock, vigour

Citation

Maturità fenolica e cellulare come metodo di valutazione dell’interazione vitigno-ambiente: il caso del Cabernet-Sauvignon

ln the current work, phenolic and cellular maturation curves were used to assess the degree of adaptation of the cultivar Cabernet sauvignon to the sites under esamination. Five wine-producing zones with different pedoclimatic characteristics and latitudes were considered (Marche, Toscana, Emilia, Friuli and Slovenia).

Application de l’Analyse du Cycle de Vie (ACV) à un domaine viticole

Since 1980, Château de l’Éclair has belonged to SICAREX Beaujolais and has been involved in experimentation for the Beaujolais vineyards. However, it is a commercial estate with profitability and quality constraints, which means that it has to meet the growing environmental expectations of consumers. Given the number of practices claimed to be environment-friendly, it is sometimes difficult to prioritize actions.

La perception des terroirs du vignoble des Coteaux du Layon

On peut être surpris de l’existence d’un vignoble de vins liquoreux, le vignoble des Coteaux du Layon, dans une zone septentrionale à la limite Nord de la culture de qualité de la vigne et ce d’autant plus que le cépage de ce vignoble, le Chenin ou Pineau de la Loire, est un cépage semi tardif. La première explication est à rechercher au niveau des facteurs naturels (données climatiques et géopédologiques) permettant la réalisation de ce type de produit. Il est nécessaire de souligner ici l’importance de chaque paramètre du terroir pris dans im sens large (géopédologique et climatique) et que toute variation de l’un d’entre eux, même non perceptible en première analyse à l’homme, peut avoir des incidences déterminantes sur la qualité des vins.

French wine sector facing climate change (part. 2) : the implementation of the national strategy

This summary follows this made by Hervé Hannin et al. Entitled “French wine sector facing climate change (part. 1) : a national strategy built on a foresight and participatory approach “. The french wine sector has taken a collective approach to the issue of climate change, and has officially submitted its strategy to the minister of agriculture in 2021. This industry policy is the result of multidisciplinary work carried out through the “laccave” project (metaprogramme accaf, inrae) and its prospective study designed to anticipate climate change in the french wine industry (aigrain p. Et al., 2016). French wine professionals decided to structure a strategy to deal with climate change du in particular to the presentation made at the 2016 OIV congress in Brazil.

Climate change and economic challenge – strategies for vinegrowers, winemakers and wine estates

For wine areas around the world, nature and climate are becoming factors of production whose endowment becomes a stake beyond the traditional economic factors: labor, capital, land. They strongly influence agricultural and environmental conditions for production.