DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 1-2/1966 str. 32     <-- 32 -->        PDF

from previous wood investigations, or on the basis of wood samples from a
large number of proposed plus trees, together with chech trees which were
to be assessed. The measured basic density of the wood from the »plus-tree


HEIGHT CURVE FOR PLUS TREES OFNORWAY
SPRUCE INCLUDED IN THE SEED ORCHARD Na52
IN SOUTHERN SWEDEN.


34i Mean height of the plus and check trees in m.


33


32


31


30H


29


28
27
26\
25
24
23
22


21
PLUS TREES
20 CHECK TREES
K´<_
//50
60 70 80 90 100


years


The age of the plus and check trees at breast height.


Fig. 5.