The trials were established on forest land (7 sites) or former agricultural land (6 sites) within the latitude range of 56° to 65° N and were assessed 3–4 years after establishment. Henry and their hybrids) in 13 Scandinavian field trials are presented. × P. tremuloides Michx.) and poplar clones ( P.
Results on early survival, growth and shoot phenology of hybrid aspen ( Populus tremula L. The results support current recommendations for utilization of selected hybrid aspen and poplar regeneration material in Sweden.The genetic results indicate good possibilities for effective clonal selection.The poor performance of poplar was likely due to poor climatic adaptation or to high soil acidity.Growth and survival was in general higher for hybrid aspen than for poplar.Early growth and phenology of hybrid aspen and poplar in clonal field tests in ScandinaviaĮarly growth and phenology of hybrid aspen and poplar in clonal field tests in Scandinavia.
