Peculiarities of seasonal growth of Pinus nigra J.R Arnold under the conditions of introduction in the Right-Bank Forest-Steppe of Ukraine

摘要

Generalization of scientific studies and analysis of experimental data on the peculiarities of seasonal growth of vegetative organs of Pinus nigra J.F. Arnold, their compliance with the climatic conditions of the Right-Bank Forest-Steppe of Ukraine are reported. Studies showed that the mechanisms of regulating growth processes are directly affected by the air temperature. P. nigra belongs to the species that begin their vegetation early in spring. The first shoots to start growing are the ones whichrequire a small amount of heat. Studies showed that the needle growth begins on the 30lh-35th day after the onset of shoot growth. During the study period it was also noted that the growth intensity of shoots is gradually increasing from the base of thecrown to its top.