Published in Scientific Papers. Series B, Horticulture, Vol. LXV, Issue 2
Written by Grigore-Valentin BELENIUC, Georgeta BELENIUC, Cristian MĂRĂCINEANU, Nicolae GIUGEA
In the 2019 year, the phenology of the white and black grape varieties for wine was studied, from Medgidia centre and the fertility elements for each variety were determined. Also, the climatic elements specific to 2019 compared to the multiannual average were studied. The year 2019 recorded values close to or higher than the multiannual average for almost all climatic elements, except for the sum of annual rainfall from the vegetation period, where the values are much lower, this year being a deficit in rainfall. According to the value of the Real Heliothermic Index (IHr) of 3.13, the year 2019 registered optimal values for the vine. The study shows that: white varieties for wine, sprouted early, between 15 April ('Chardonnay’) and 17April ('Muscat Ottonel’); black varieties, sprouted between 15 April ('Merlot’) and 18 April ('Cabernet Sauvignon’); the white varieties bloomed on 5 June ('Merlot’) and 7 June ('Cabernet Sauvignon’); the ripe, occurred on different dates for different varieties; full maturity was in 8 September for white varieties and between 17-21 September for the black. For the varieties studied, the largest number of fertile shoots were for 'Muscat Ottonel’ (22).
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