ABSTRACT
The height of the sampling point in acacia trees, where the medium tannin concentration is located, was studied for black acacia, Acacia mearnsii De Willd. The equation hi/h=1.22747 - 0.046494.CTA was obtained relating the sample height over the total height to the tannin concentration. Substituing the medium value of CTA, 15.52165%, the value 0.401983 is obtained for hi/h. We concluded that the medium concentration of tannin can be determined at a single height, 40% of the total of the tree stem, independent of the age of the tree.
Key words:
Acacia mearnsii; tannin; cut height