Growth status of Scots pine artificial stands under the influence of para-aminobenzoic acid

摘要

This article summarizes 27 years of observations on the growth status of Scots pine artificial stands established after treating seeds with para-aminobenzoic acid (concentration range: 3.7-18.2 mM) one time. A long-term stimulating effect of PABA on the height growth (up to 47%) and diameter (up to 42%) of artificial stands is discovered. By the age of 27 years, self-pruning of the artificial stands increased by 18%. Possible mechanisms of long-term PABA physiological effect are now being discussed.