RESPONSE OF CHERRY PLUM (PRUNUS CERASIFERA EHRH.) TO SEASONAL CHANGES

The article describes the unique seasonal changes of the Pissardi plum (Prunus cerasifera Ehrh.), studies conducted in countries such as Europe and the USA, and the history of its origin. The article presents the results of phenological observations carried out in the cherry plum (Prunus cerasifera Ehrh.) collection garden, established in the research and educational experimental farm at the Tashkent State Agrarian University, namely the beginning of sap flow in trees, the appearance of buds, flowering, flowering time, flowering duration, the appearance of leaves, the formation and ripening of fruits, tree productivity, the beginning of fruit shedding, full ripening of fruits, yellowing and leaf shedding, as well as a number of seasonal changes.