Scots Pine Provenances in Denmark

1990

423 S.

14 Abb., 45 Tab., zahlr. Lit. Ang.

Bandaufführung

2068

34705

The backbone in this dissertation, "the main experiment", consists of 22 experiments in 5 series. While the 21 experiments of these are placed in Jutland, only one single is placed on the Islands (in this case Zealand). They are all placed on poor sandy soil of low productivity, which is a traditional planting site for Scots pine. The oldest experiments were established in 1914 while the youngest is from 1981. They have typically been intensively followed in certain periods and have after some years been "forgotten" or only infrequently followed. Except for two, all the experiments have survived until now and at the end of the 1980's all of them were evaluated again. At the same time there was made a status for 8 Scots pine series with a total of 15 experiments of variable value. Further six experiments are only touched peripherally because of their low quality and are only of value as common planting experience. Also four, purely historic experiments, are mentioned. They were previously published (Helms 1928a+b+c, Lofting 1951 and Brandt 1954 a.o.). This leads to a total of 47 experiments, whichare summarized in table 1 and figure 3. 122 provenances are evaluated and are referred chronologically in table 2 according to year of start of participitation in their respective experiments. It appears that the main part (63) are Danish provenances, while the other provenances are 17 Norwegian, 11 Swedish, 10 German, 8 Scottish, 5 Polish, 4 Baltic, 2 Finnish, 1 Dutch and Belgian. From the location of the parent stands (figures 1 and 13) it appears that the foreign provenances are from parts of the natural distribution that are quite close to Denmark (figure 2). The Danish provenances are mainly from the Dunes and are of known or unknown foreign origin - except for two that are said to be of Danish origin. At the evaluations the main importance is attached to the following traits in the respective chapters 3, 4 and 5: health (survival and vitality), growth energy and stem form. Survival results from the four most important series are shown in the tables 4, 6, 8, and 9, the photos 3-8 and figure 5. The most important production results from the main experiments are (based upon status results) shown in the tables 10-13, 24, 26-28 and the figures 6-12. Only phenotypic, directly observed values are shown, but in section 4.D the genotypic values of the provenances are expressed (tables 29-31), calculated from the phenotypic variances. For two of the series a typical view of the results of stem form analysis can be seen in the tables 32, 33 and 37. In several series it has been possible to outline the height development over a longer period (until 60 years!) and observe changes in ranking of the productivity of the provenances (figures 7, 8, and 10).