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a y be mild
m
tree growth
oil s may also be classified acco
which the humus is decomposed
soils
in which
quick
a nd loamy marl
loam
humus proceeds at a rate favo urable for growth
actually exhausting the supply of o
soil
where the decomposition is too slow for a healthy
d
velopment of mo st plants
which
humus and rest
the variou s phy sical p
and of moistu
ccording to consistency
manner
r m uch humus
sa
d o
and swell d u
lif
ed by f
r ained loa
g
r
calca
ous soils
H
sand
r ain
g
d sand
In classi
ying soil s according to the deg
L
I F I
dry
or sour
the two latter unfavo urably
uch as dry porous sand and c
uch a s moderately moist loamy sand
uch a s peat soil
h er f r om excess of moistur
eit
little or no decomposition takes place
fi
r e are of special importance in silvicultu r e
soil s which contain muc
h as p
uc
r ing rainy weathe r
r ost
oils of mod
y sand s
especially marl
uch a s
h as clay with a limit
uc
TI O
first acts very favou
r ding to the r apidity with
as
d ecompo si
ion of
in which the decomposition of
uch as
P
r operties
the d egrees of consist
soils may be classifi
at and moor soils
rate cohesion
coar s
r g
r ained loam
g
I L
O
r ably upon
humus is
r ganic matter
clay
wet soil
shifting sand
or absence of
P
d in the following
h coa r se grained
h
whic
r e al so much
th
y a
such as
r ain
d sandy loam s
clay with coa
d quantity of fine
r
of moistu
a lcar
o us
sandy
wi
hout
heather
etc
in
ncy
lastic
r se
r e
a
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