The resistance to frost of the varieties studied depends on the species from which it originates and the place of origin, the duration of dormancy and winter temperatures, and, in addition to the genetic determinant of the variety, a different influence from year to year, also had the climatic conditions. During the biological dormancy, the trees of the stone species can withstand minimum temperatures from -26°C to -28°C (apricot), -23°C to -24°C (peach). At these temperatures resist only trees that had good condition of vegetations, and have accumulated many spare substances. According to the climatic data recorded at CCDCPN Dăbuleni and following the observations made, it was pointed out that the temperature oscillations,especially the low temperatures, had a negative impact on the fruit trees in the winter 2015/2016, reaching at frosbite flower buds at apricot and peach species more than 90 %. The winter 2016/2017 was favorable for dormancy period of the fruit tree species, the minimum temperatures did not occur suddenly, and the late frosts did not cause any damage to the fruit species due to the preventive measures
