Scientific Papers Series B Horticulture

climate (IH4), becomes for this year a hotclimate (IH5) – (IS1, IH5, IF3).Analyzing the obtained qualitative dataIt is observed that, the results of the experimentare directly correlated with the unfavorableevolution of the climate factors during 2010-2012 and that, each year of culture, through theevolution of the weather recorded phenomenon,leaves a mark on the manifestation of one andeach variety. Although the clonal selectionscomes from an old local soil (Feteasca neagra),with a climatic remarkable adaptability, thewaves of cold and the absolute minimumtemperatures recorded in the air of-26,6 0 C(January 2010), of-23,2 0 C (January 2012)produced important bud losses during thegrowing rest period.In table 3, it is observed that the clonalselection Feteasca neagra 10 Pt, records amedium value of 42% winter buds viability,with a minimum of only 20% in the year 2012,minimum which was due to the large timeperiod in which the temperatures maintainedcritical, but also to the phenomenon of rainfrozen on the vine strings (freezing rain),between February the 4th-February the 6th.Analyzing the recorded production of 6,3 tonesper hectar it is also observed that the smallestvalue is recorded by the clonal selection in2012, when it obtained the smallest values of agrape medium weight values (175g), as well asa minimum weight value of 100 grapes (140g).It can be mentioned the fact that on this fond oflow productivity, the sugar accumulatedquantity reached the maximum level of 243 g/l,quantity that offers qualitative constancy and ahigh alcohol potential because this selectionaccumulates in the good wine years, around242 g/l.Table 2. Evolution of the climate elements in the wine area of Pietroasa (2007-2012)Specification%viablebudsTable 3. Evolution of quality parametres during 2010-2012Yield(kg/vine)Sugar(g/l)Acidity g/lH 2 SO 4Average Year Year YearSpecification2007-Max Min2010 2011 20122009global 4233,4 3920,44019,14205,74233,43920,4 Thermic balance active 3577.2 3473,13388,33835,53835,53388,3useful 1677,2 1626,21616,21955,61955,61616,2Absolute minimumAir -17,13 -26,6 -16,1 -23,1 -16,1 -26,6temperature°CSoil -19,5 -27,9 -17,4 -26,7 -17,4 -27,9The sum of the hours of real insolation (Sir) 2060,7 2036,42049,32125,32125,32036,4The sum of the annual precipitations (mm) 522,6 655,2 601,1 579,6 655,2 522,6Number of days of active period 205,6 214 207 220 220 205,6The hydrothermic coefficient CH) 0,82 1,17 1,19 0,97 1,19 0,82The real heliotermic index (IHr) 1,37 1,12 1,05 1,08 1,37 1,05The viticultural bioclimatic index Indices agroclimatics (Ibcv)9,05 5,96 5,38 11,2 11,2 5,38Index of the oenoclimatic aptitude(IAOe).5185,7 4816,44373,25074,55185,74373,2Gluco-AcidimetricIndexAverageweight ofa grape (g)Weight ofonehundredgrapes(g)FullmaturityClonal selection Feteasca neagra 10 Pt2010 57 8,0 235 5,5 4,3 180 210 16.092011 49 7,0 231 5,8 4,0 180 165 18.09Wine 2012 20 6,3 243 5,5 4,4 175 140 10.09year average 42 7,1 236,3 5,6 4,2 178,3 171,7 15.09min 20 6,3 231,0 5,5 4,0 175,0 140,0 10.09max 57 8 243,0 5,8 4,3 180,0 210,0 18.09232