DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 7-8/1988 str. 22 <-- 22 --> PDF |
quantity and quality. In order to make a success of this very important project it is necessary to study the bioecologdcal characteristics in the tree species, (i. e. provenances, in the conditions into which these species are intended to be introduced, with simultaneous comparison of these ecological conditions with the natural geographical region, which is particularly significant for the Sitka spruce as it covers areas with very different ecological conditions. The investigation covered 6 IUFRO-provenances of Sitka spruce, which im their ninth year were used for the observation of height increment rate. It was concluded that in view of the commencement and completion of height increment there are no statistically significant differences between the provenances, but in the colder geographical regions all provenances display delayed commencement and earlier completion of height growth. |