Skógræktarritið - 15.05.2001, Síða 187

Results
All the three trials showed simi-
lar tendencies. After the first
summer in the Mosfell 1993 trial,
11 % of the sown seeds had ger-
minated. Germination continued
during the second summer,
resulting in a total germination
of 30% for all methods and
species. Seedling mortality was
high during the first winter,
except under cones, where more
than 80% of the seedlings sur-
vived. Differences between tree
species in the number of seed-
ing/planting spots with one or
more living seedling were signifi-
cant at the beginning of fourth
growing season, with lodgepole
pine giving significantly better
Table 4. ANOVA on the percentage of
spots having at least one living seed-
ling at the end of the fourth growing
season in the trials from Höfði 1996,
inventoried in autumn 1999.
Source of variation
df P
species 1 0,000*
methods 5 0,000*
microsites 1 0,000*
block 3 0,019*
block (Microsite) 3 0,066
species*microsite 1 0,949
microsite*method 5 0,018*
species*method 5 0,042*

** Indicates significant difference at a=0,05
results than Siberian larch and
Sitka spruce (see more detailed
in ]ón Geir Pétursson and Aðal-
steinn Sigurgeirsson, 1997)
In the trials at Höfði from 1996,
the total germination was higher
for lodgepole pine than Siberian
larch. Lodgepole pine seed had
similar germination results under
the plastic cones (60%) and in
the pyramidal indentions (50%).
Germination was significantly
lower for Siberian larch, but the
same methods were the most
beneficial or 40% in the cones
and 35% in the pyramidal inden-
tions.
Figure 2. Precentage and SE of seed spots having one or more
living seedling in the autumn 1999. Trials from Höföi 1997
Figure 1. Precentage of seed spots having one or more
living seedling in the end of the fourth growing season.
The letters indicate significant difference (Duncans test p<=0,05)
The Kobresia-Empetrum heat site
control gravel pumice pyr ind cone planting
method
Betula nana -moor site in Höföi 96
100
80
60
40
20
0
method
a a § §
regeneration method
Figure 3. Precentage and SE on the seed spots having one or
more living seedling in the autumn 1999. Trials from Mosfell 97
lodgepole pine ■ » siberian larch l l sitka spruce | ,
’
ii L í L
SKÓGRÆKTARRITIÐ 2001 l.tbl.
185