Ein Beispiel fuer die Uebertragung wissenschaftlicher Erkenntnisse in die Praxis. Provenienzforschung bei der Douglasie

1989

4 Abb., 15 Lit. Ang.

Unselbständiges Werk

4223

200020988

Although Douglas-fir has been grown in Germany for over 100 years, the IUFRO provenance trial stimulated a new interest in Douglas-fir in the seventies. Examples are given, how the results of these provenance trials have changed the seed import guidelines for Douglas-fir into the Federal Republic of Germany and how these results have led to provenance recommendations for the various growing regions in Bavaria. Progeny trials of older Douglas-fir- stands in Germany have been initiated and seed stands of tested North American provenances are being established to assure sufficient seed of proven provenance for the future. Combining the best provenance on the proper site with proper silviculture will hopefully assure good plantation survival and a broad base for future tree breeding work with Douglas-fir.