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l though wood s require protection
of their lif
Pr otection is
clearing fire t
in the interior
In addition
which occur may be promptly extinguished
under a shelter
protection against frost and
insures a considerabl
In cultivating cleared areas
artificially provided by growing simultaneously
beforehand
selected for this purpo se must be fro st
thin or moderately dense crown
perate
urope
danger from late fro st i s excessive
sprouting
is less well
in all other localities
have been
imilarly used
The nurses may be distributed evenly over the
a lternate lines
placed in
pecies can do without them
are retained
The e
ects of raw
than frost produced locally by radiation
r
fea
d
lat
may be given
and d
nsity
wind breaks
XT
it i s
pecially necessary during early youth
by removing all inflammable matter
r aces around the area and at suit a ble inter
a rea must b e watched
the
wood
r eduction of the d a nger in eithe r case
a special shelter
a re birch
a dapted as a nurse
In moist loc
as to form
cold winds are often more disastrous
ral as well as vertical sh
eith
r by adj oining woods of su
or
in their absence
These must be dense
RNAL DAN
a gainst fire at all periods
a ce
whether n aturally or arti
the latter provid
drought
shelter for tender species must be
wood
or n urses
The best nurses in tem
a nd
larch
larch
a lities
They are removed when the tender
requently
a mixed wood
by artificial shelter belts or
R
so that any fires
s
r
o
ar dy
h
and po ssess a
cotch pine
owing to its early
but i t does very well
alder and willo
some of the nurses
they are to
lter is required
ficient height
and t
y should b e
or
al s
necessary
any rate
or better
h e trees
T
a rea
or
h is
T
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