Top-Leader Growth in Nordmann Fir (Abies nordmanniana)

The growth of the top-leader in Abies nordmanniana was measured over a 6-year period, and showed consistent pattern, with an initial phase reaching maximum rate that varied between 12.0 22.5 mm per day, which could be correlated temperature July previous year. daily always peaked last week June. In late-bud-breaking plants, became short because low this first growth. second phase, slowly declined, but similar all regardless size when began, timing bud break. precipitation period. Growth cessation occurred basal part soon after break, progressed apically, whereby upper 25% young contributed to 50% final length, as section continued throughout major season.