Behavior of some varieties for white wines created at R.D.S.V.O. Odobeşti in the climatic conditions of the wine year 2019 - 2020

Abstract

The diversification of wine assortments with valuable varieties with qualitative and productive potential, with better tolerance to diseases and stress factors, is one of the main concerns of Romanian wine research. In this paper are presented data on the agrobiological and technological potential of some varieties for white wines created at R.D.S.V.O. Odobeşti (Şarba, Băbească gri, Mioriţa and Vrancea), in the climatic conditions of the wine year 2019-2020. In the Odobeşti vineyard the wine year 2019-2020 was characterized by a severely deficient rainfall regime, having as effect the atmospheric drought followed by the diminution of the water reserve in the soil and the gradual installation of the pedological drought. The Şarba variety showed a more accentuated sensitivity to the atmospheric and pedological drought, which generated a stagnation of the sugar accumulation process in the grains. The grape production varied between 5.19 kg/vine for the Mioriţa variety and 6.17 kg/vine for the Băbească gri variety, values close to the productive potential of these varieties. Qualitatively, the production was characterized by superior accumulations of sugars between 188.5 g /l for the Mioriţa variety and 212.9 g/l for the Băbească gri and Şarba varieties, with values of the total acidity of the must between 7.34 g/l acid tartaric to the Băbească gri variety and 5.17 g/l tartaric acid to the Vrancea variety.