Evaluation of silver fir provenances at 51 years of age in provenance trials in the Předhoří Hrubý Jeseník and Nízký Jeseník Mts. regions, Czech Republic

In 2021, measurements were done at two international provenance research trials for silver fir originating from the same series of experiments. The investigation was carried out in location Vítkov and Úsov, where both established. Biometric data (tree height, diameter breast height) measured qualitative traits (stem shape, occurrence stem forking, damage, bark pattern, defoliation) assessed during early mature stage experiment. Overbark volume per-hectare standing also calculated. Sixty-five provenances domestic foreign origin evaluated trials. Although results do not indicate unequivocally most suitable or productive trials, Czech including ones surrounding natural forest areas perform consistently better than average. least provenances, on other hand, those parts Bulgaria, Austria, especially Italy, which achieved poorest even shape. conditions, therefore, Italian have proved so successful as they United Kingdom.