PECULIARITIES OF PASSING PHENOLOGICAL PHASES OF PEAR DEVELOPMENT CIRCANNIAN CYCLE DEPENDING ON CONDITIONS IN THE REGION
Soil and climatic conditions are the most important among many different factors, on which the development of horticulture depends to a large extent. This dependence is determined by the fact that the potential yield of any fruit crop can be maximally realized or not be realized at all. Global warming has caused an increase in the average annual temperature over the last decade by more than 1 °C, and in the winter-spring period by almost 3 °C, which is a sharp and significant increase; this gave rise to the frequency and severity of abiotic and biotic stressors. We can observe more often falls in temperature in autumn, winters have become extremely mild with long thaws and recurrent colds, frosts are stronger and more frequent, droughts and downpours are prolonged, or there is a combination of similar phenomena. under the given circumstances, yields and quality of products are reducing, stresses among trees are growing more frequent. All this makes it necessary to study the reaction of cultivars to changing conditions.