Naslov
Adaptation of canopy management practices to global climate change with the aim to produce well balanced, high quality wines

Autori
Bubola, Marijan ; Hegyi, Ádám István ; Plavša, Tomislav ; Lukić, Igor ; Radeka, Sanja ; Užila, Zoran ; Lakatos, László ; Vaczy, Kálmán Zoltán

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XX. Szőlészeti és Borászati Konferencia / Vaczy, Kálmán Zoltán ; Helga, Szalontai ; Csilla, Kövér - Eger : Eszterházy Károly Egyetem, 2019, 72-73

Skup
XX. Szőlészeti és Borászati Konferencia / XX Vineyards and Wineries Conference

Mjesto i datum
Eger, Mađarska, 13.02.2019. - 15.02.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Climate change ; Alcohol content ; Anthocyanins ; Wine quality

Sažetak
In the past few decades a significant increase in the alcohol content of red wines in many regions of the world was observed: wines with high alcohol content became a frequent problem of oenology which is the indirect effect of global climate change. The increase in the daily average temperature and in the number of sunshine hours results in the advance in vine phenology and faster sugar production in berries, which culminates in higher sugar concentration in grapes. However, the formation of phenolic and aromatic components and changes in acidity profile is differently influenced by the temperature. In order to develop a viticulture technology which is adapted to the current challenges concerning the climate change, the aim of this study was to investigate the possibilities of adjusting vineyard canopy management practices to reduce the accumulation of sugar during the maturation phase without reducing the accumulation of secondary metabolites in grapes. Four factors which affect grape maturation and its final composition were investigated: the height of shoot trimming, crop level obtained by different number of shoots per vine, cluster thinning, and the date of harvest. The research was conducted on Merlot variety in two climatically different regions ; in Istria (Croatia), under the Mediterranean climate and in Eger (Hungary) under continental climate conditions. The investigated factors differently affected the accumulation of sugar and the secondary metabolites in grapes and wines, and the best growing practices to mitigate the effects on climate change were proposed.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA