Treatment of top shoots (leaders) of trees of the family Picea and Abies

摘要

The present invention relates to the regulation of the growth of top shoots (leaders) of trees belonging to the family Picea or Abies, in particular to a method for the treatment of such trees to reduce or even inhibit the growth of the top shoot (leader). The method comprises applying 1-naphthalene acetic acid to the top shoot in a suitable concentration. In a further aspect, the invention relates to trees of the family Picea or Abies obtainable by said method.