DIGITALNA ARHIVA ŠUMARSKOG LISTA
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|ŠUMARSKI LIST 4-6/1975 str. 54 <-- 54 --> PDF|
Recording of data was performed at the end of the growing seasons 1970,
1971, 1972 and 1973. Recorded were the survival Ca/o) and height increment (L), and
at the end of 1973 in addition the total height (h), diameter b.h. (d), and shoot
diameter in 1973 (r). The shoot volume was calculated according to formula v=r-l.
Performed were analysis of variance, F-test and Duncan´s multiple range test on
an individual basis for all characteristics. Done was also the correlations analysis.
In the 4th year after planting there were no significant differences in the plant
survival among the variants. It was on an average on the plots of height class
II and commercial class 94"/», height class I 93°/o and height class III 91´%.
Height increment of plants during the follw-up period was on an average most
intensive in plants of height class I, afterwards in height class II, then in commercial
class and the poorest in heiht class III. The differences found were very
significant in the 1st, 2nd and 3rd years after planting. In the 4th year there was
no significant difference. Almost the same result was obtained also by may of
testing differences for the volume of the terminal shoot. On the basis of the
results obtained it was found that the differences in the height increment were
most marked in the 1st year after planting already.
Total height and diameter b.h. of plants in the experiment followed the initial
relations between the height classes of plants. The established differences were
Duncan´s multiple range test demonstrated a superiority of the plants of
height classes I and II in relation to the commercial class and height class III.
The differences were more marked in respect of the diameter b.h. than of the total
height of plants.
On the basis of the data collected it is to be concluded that Scots Pine plants
of height class III and those of the commercial height class were inferior in every
respect to height classes I and II. On this basis is given a recommendation for the
sorting of Scots Pine transplants into the height classes prior to their transporting
in the terrain. Larger and higher-grade transponts will overgrow quickly the endangered
zone where competition of weeds, autochtonous species and game is very
keen. This contributes largely to a greater economy of works in the establishment
and tending of forest cultures as a whole.
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