American Falls press. [volume] (American Falls, Idaho) 1907-1937, 1916-01-13
cuR OF APPLYING
IRRIGATION WATER.
ne Time Of Applying Water a. Well
As the Amount, Doubtless Has Much
TO DO with the Yield.

IN AARVh Ath YNN%ft0 -
.ogan, Utah, and the work done wal
n the Franhauser and Greenvill.
arms of that section.
The time at which water Is applied
o crops, determines lergely, the yield
his question is only partially un.
srstood although much discussion has
cen carried on concerning 1t. Prac-
cal difficulties confront the farmer
no attempts to apply water at def
lite times. The flow OF water Ii con-
lnuous throughout the season. and
, prevent waste. should be used con
inuously. This, obviously. can be
n only by a system OF rotation
hereby each farmer OF the hundreds
nder the canal, is given a definite
uantity OF water at regular intervals.
hould the farmer use a certain stream
T water once a week, or a stream
vice Is large every two weeks O,
ne three times as large every three
'eeks? The practices OF irrigation
ompanies differ exceedingly In this
natter. In some cases water IL sup4
lied to the farmers In small streams
vice a week. In others the farmer
as TO wait from three weeks TO a
ionth for his turn. Considering the
inform distribution OF labor, the fire.
iuent receipt OF water from the ditch
preferable, on the other hand, some
armers favor long intervals, so that
ne task OF irrigating may come az
eldom as possible, for the labor is
evere while II lasts. The irrigated
ection is In serious neeu or definite
nformation concerning the right time
0 apply water so that these questions
y water rotation that confront The
irrigation companies may be- settled
IN the basis of a rational practice.
Whether the water Ia received fire.
'uently or at long intervals the ques-
ion always remains as to the best use
I tho water after II is on the land.
In the first series OF experiments
bout 3.5 inches OF water were used
his In equivalent to one air sized
irrigation. In one case this was an
''iod at The usual time OF the first
irrigation, that Ia, about or soon af-
er the middle OF June. In the second
'ase the irrigation was delayed until
no heads (of wheai) were "fil,ine
'ut.' When the water was applieo
II the time OF FILLING out" there was
! gain OF about three bushels OF wheat
'er acre, and a dimunition OF about
'6l pounds OF straw compared with
ne crop obtained with the June irri-
alton. The latter irrigation seemed
0 enable the plant 10 transfer more
4 the nutritive materials from the
tocks to the heads.
In the next series Of experiments
bout 66 inches of water were nm
lied In n and In two i~rrigations.
With the latter the yield OF grain
a about two bushels over that OBJ
aimed when the water was applied I'm
ne irrigation, but the yield OF straw
Fas somewhat decreased. This also
Gems to apply that IL Is advantageous
o apply water again after the begin
ing OF the irrigation season.
In the next series rs Inches were
ppiied In two irrigations, but In
hree different ways; first In two
qual irrigations: second, one light
nd the second heavy; third, one heavy
nd the second Hight. The larpes,
cid OF grain was obtained when IN.
'ater was applied In two equal Irrt-
'ations: the next highest, when The
agntor irrigation came firsu The
aeid OF straw varied in lust the
'posite manner, being smallest when
ne water was applied In two eoua,
.rrigations. and largest when tho
ieavy irrigation came frat. Tbi.
'oes to show that the effect Of the
OF APPLICATION was to decrease
" Increase the ease with which the
stored In the stalks can h.
'arried into the heads. When II ia
considered that the grain has a mucn
,isner vaiue, pound for pound. than
no straw any method Of irrigation rnar
VIII enable the farmer to increase The
rain at the expense Of the straw no
'omes exceedingly important
Inc next series OF experiments deal,
I'm ten inches Of water applied
throughout the season In several ar
ways. The largest Yield or
ram vas obtained when the wa,sr
vas applied In two equal irrirat,ons
,"e immediately after the opening of
ne 'rrisaiion eeason and the other .
aaue later about the time Of the
'niing out" OF the grain. The nexr
yield OF grain came when ga
ncnes We're applied first. then 6 inch
49, then 2.5 inches again, the heavy
irrigation coming at about he time
'hen the grain was filling out"
The data of this section indicate that
the larger part of the wa
81 was applied early In the season.
the opening of the irr1ga-
ton season and the time Of "ffllinr