ZLV Online

Abstrakt

Douglas-fir is one of the most promising introduced tree species in Czech forests. The aim of the study was the evaluation of the two oldest experiments established in the Moravia region in 1959 on two localities: (i) Horní Lhota and (ii) Studená Loučka with 11 and 9 provenances, respectively. On the trials, basic quantitative characteristics were evaluated, obtained results from both trial were then compared. Also, an ocular assessment of basic qualitative traits was performed. On the trial Horní Lhota, there were found differences especially among growing stocks of individual provenances. Provenances from Oregon were found to be slightly above average in (i), while provenances from Washington were slightly above average in (ii). However, the Studená Loučka trial showed slightly worse evaluated characteristics compared with the Horní Lhota trial. The universal optimal provenance for both trials was not found, the growing stock was influenced by the different number of trees in both trials.