Abstract
Budburst phenology of tree can be valid for tree condition assessment in general. However, this has been little verified by covering many individual trees. In this research, we clarified the relationship between flower and leaf budburst phenology of 102 individuals of Cerasus jamasakura in 4 plots and its visual tree vitality index in Yoshinoyama, Nara prefecture, Japan. The results showed that greater standard deviation within a population regarding budburst phenological date such as leaf bud opening, flower bud opening, leafing out, flowering, leaf developing and full flowering tends to be related to lower tree vitality compared between the populations which was planted at mostly same time. Further research is necessary to compare budburst phenology and quantitative vitality data and to develop objective method to identify budburst phenology for health assessment of tree populations.
