Search

The work deals with the evaluation of three Norway spruce provenance research plots within the age 40-50 years. Totally, 65 provenances from several regions of Norway spruce were measured at two different altitudes (North Moravia) and under the conditions of former air pollution load (North Bohemia). The plots are part of the GDR-CSR 1972/76-77 series established in cross-border cooperation with Germany. The evaluation included heights, DBH, defoliation, stem form, stem damage and health state. The best volume production was achieved in both research plots by provenances of German origin, namely 41 Hainsbach (Červená Voda research plot) and 39 Bütterbächel (Mnichov), whose origin altitudes roughly correspond to the altitudes of the research plots on that they proved successful. With the exception of two Austrian provenances (49 Granitz, 50 Fastenberg) on the Červená Voda plot, the provenances from Belarus and Austria show the slowest growth on research plots Červená Voda and Mnichov. The fastest growths show the provenances from Poland with one exception (59 Borki) on the plot Červená Voda and one exception (58 Iłava) on the plot Mnichov. Czech, Slovak and German provenances growth intensity was mostly moderate or slightly above average. Two homogeneous groups according to origin have been differed: (1) Alpine, Rhodopean and Russian-Scandinavian, (2) Hercynian-Carpathian. The best growth performance appeared in the provenances of the Hercynian-Carpathian sub-region, the worst in the North-European provenances. [ABSTRACT FROM AUTHOR]