Abstract:
Climate change influences viticulture by changing the topoclimate of the
vineyards, the phenology of grapevine and the chemical composition of the grapes.
Areas unsuitable for viticulture have started to acquire viticultural potential, while
others are negatively affected. Research to date indicates that Cotnari vineyard is
among the regions favored by climate change: the vineyard's potential has changed in
terms of increasing areas favorable for the production of quality white wines and the
creation of conditions for red wine production. This researchaims to establish the
influence of some cultural practices on the chemical composition of grapes for the
Tămâioasă românească variety, aiming to use them asadaptation measures to climate
change. The evolution of the grapes ripening was studied for three different
experimental variants: defoliation applied at the base of the shoots; the defoliation of
the middle third of the shoots; and shading vine leaves by bentonite film. The results
indicate taht: the lowest accumulations of sugars is registered in the control variant,
no de-leafing measure applied (173.8 g / L) while the largest is found in grapes where
the shoots were stripped free of leaves at their base (216.0 g / L); an effect of reducing
the sugar content when shading with bentonite film at a concentration of 6% (206.8 g /
L), increasing the pH (3.91) and decreasing the titratable acidity (5.0 g / L ac. tartaric)
was registered . The values obtained provide indications of the effect of different
interventions on the composition of grapes and their suitability as measures to adapt to
climate change, and experiences will be continued and diversified in the coming years.
