Results of the IUFRO 1982 Scots pine (Pinus sylvestris L.) provenance experiment in southwestern Germany

Seed of 24 provenances of Scots pine (Pinus sylvestris L.) from 13 countries within the area of natural distribution was sown in 1983. During the first 3 years in the nursery several traits were measured and assessed, e.g. height growth and the number of twigs in the uppermost whorl. In spring 1986 a field trial (3.3 ha) has been established in forest district of Bensheim, southwestern Germany. During the last years the following traits were measured and assessed: height growth after several vegetation periods, diameter at breast height, branching, stem form, damage by the beetle Brachyderes incanus and mortality. Regarding these characters the provenances show a considerable variation and can be divided into at least 6 main groups (clusters).