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Moderator : Jacques Carroger

5. Dr. Valeria Panzeri with Ms. Hilaria Iipinge and Dr. Astrid Buica as co-authors - Vine architecture and taste - Poster

South Africa has been affected in recent years by drought and warm weather conditions influencing grapevine yields and berry chemical composition.

 

The present study was conducted in an attempt to understand which vine architecture is most suitable to maintain economic viability as well as wine quality in a changing climate. Grapes were collected in 2017 and 2018 from a single, uniform Chenin Blanc block planted in 2010 with six different trellising systems namely Smart Dyson, Ballerina, T-frame, Santorini, Lyre and Echalas. Wines were produced according to a standardized wine making protocol and evaluated both chemically and sensorially.

 

For the purpose of this report, the main  objectives were to evaluate the wines using both industry experts and trained panellists, with the scope of profiling the wines (Check All That Apply method) and to assess if the different systems had an effect on quality and organoleptic properties (Quality scoring method).  Aroma evaluation revealed a trend to divide the treatments into 3 main groups characterized by sweet-like (baked/stewed fruits), fresh fruits (melon, pear, peach and lemon), and spicy and mineral, respectively. Taste and mouthfeel evaluation revealed the formation of 4 main groups with a development from ‘light body’, ‘unbalanced’ and ‘high acidity’ to ‘full body’, ‘complex’ and ‘long aftertaste’.

 

The overall quality of the wines revealed no significant differences with the exception of the Santorini trellis system which scored the lowest. Given the versatility of the Chenin Blanc cultivar these results indicate that choosing the trellising system most suitable to the specific terroirwill not compromise on either quality or organoleptic characteristics of the wine produced. 

6. Ambroise Bécot - Chaume and Savennières, viticultural territories moving towards biodiversity - Poster

Todays news reminds us every day that biodiversity has become a serious issue and of social concern.

 

Between the need to understand and share the ecological mechanisms between vine growers, the need to exchange with other actors in the area and the desire to communicate with consumers, three AOCs have decided to make biodiversity a focus for collective work. that is to say, a topic for AOC

 

In 2017 they started out of nothing. In 2019 and 2020, they embarked on studies and actions of landscape preservation from a species : bats ...

 

the Program

Session V - Viticulture and winemaking itineraries of Chenin blanc in a changing environment