Study of the Increment of IUFRO-Douglas Fir in Various Provenances at "Crna Lovka" Experimental Plot (Bosanska Gradiska)

1989

13 Tab., 15 Lit. Ang.

Unselbständiges Werk

2963

200041817

The height incremen, diameter and quality of 8 Douglas fir provenances was studied at an experimental plot of IUFRO-Douglas fir in various provenances. On the basis of the results of the investigation it can be concluded that significant differences exist between provenances, but that, due to the uneven growth, they become smaller with plant aging. In the same way significance view of the increment in height the most productive provenance is 1069, with regard to diameter provenance 1091 and regarding quality provenance 1060. It we take into consideration bot average height and quality, the 1036 provenance is the most valueable, which originates from British Columbia (Canada).