Scientific Papers Series B Horticulture

Figure 1. Evolution of Huglin Index between 2007-2012 in the wine area of PietroasaFigure 2. Evolution of Huglin Index and content sugars (g/l) for clonal selection Feteasca neagra 10 PtA partial conclusion that can be made is thatthe particularities of these wine years left amark on the agrobiological and tehnologicalbehavior of the clonal selection Feteasca neagra10 Pt, and that particularly, the productionsobtained in this years are much under theselection limits, practically hierarchialdescending, as follows: 2010, 2011, 2012without being majorly affected by thoseparameters that define and insure the quality ofa wine (sugar, acidity).It is worth mentioning the fact that, lowproductions of the year 2011 were due to thehydrometeorological extreme phenomenons233under the form of torrential rains, windintensifications with storm aspect and extremehail on the 24th of August, which byintensification and duration produced damagesin the Pietroasa area of 75-90%, and in the yearof 2012, due to the extreme air temperatureslimits (-23,1ºC) and (-26,7ºC – record value) atsoil, which lead to bud losses of approximately80% for all cultivated varieties in this winearea.After the study, following the evolution ofHuglin Index values in the wine area ofPietroasa (index that offers relations regardingthe thermal potential of the wine area) and the