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The soil receives wate
so urces
rom the atmo sp
vapo ur condensed by
rom g
r om inundation s
h e supply is suitably dist r ibut
provided t
seasons of the yea
ture su
fici
ntly long du
r e wanting
a
ably
because it produces a more even degree of moisture in
h e upp
r layers of the soil
t
many cases obj
at one time
irrigation
pro duces ve
expensive
gases
be
n d
alt with in
r y to add t h at the amoun t of air in t h e soil va r ies wit h in
sa
wid
limits
quantity of organic matt
which it is decompos
r incipal physical p r op
The p
tur
are the following
or binding pow
of
soil
r ent parts
di
e
r e in t h e soil
moistu
small
st in sand
extremes
Y
L P
P
I
r from
h ere
r ound wate r r
r o
d f
the atmosphe
r
and t
r ing d r y w
ground wate
ctionabl
r y at o t h e r s
and too d
r y favourabl
h a s air
suc
ection I
h at the amount of ca r bon dioxide d
and t
d
I
CA
h esion b
r
co
It d
pend s on the chemical compo sition of the
r
d
g
G
admixture of humus mode
O
P
TI
or more of the following
as dew
h yg r oscopic action of the s oil
sting in
h
w
ther natural o
r e acts most fav ourably
h e soil is capable of r etaining mois
ath
r is lik
r al inundation wat
atu
because it rende
results
carbon dioxide and ammonia
of this chapter
r in
L
TI
r ties of importance in
t
of division
r ally
n
it i s gr
I L
O
rain
snow
s ubsoil
r artificial
d over the dif
r
re thes e con
ly to act more favour
r s
soil too wet
rtificial inundation
but it is generally
It i s only
soil
and
IL
O
n the di
erent pa
h e quantity of
and t
atest in clay and
hail
or as
erent
r is in
or
have
p
nds on
rate at
r ticl
s
ates both
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