The Yakima herald. [volume] (North Yakima, W.T. [Wash.]) 1889-1914, 1909-07-14

the same time the most economical
method will be shown in the use of
porous tile pipe laid under the ground.
The principle is the antithesis Of
drainage in that the pores and joints
Of the pipes give out sufficient water
to supply the plant life above them.
This plan is declared to be practicable
i'm supplying the moisture for fruit
trees. vegetables. berries and almost
every kind Of product, the advantage
being that the water carried by the
pipes is discharged directly below the
roots of the plairts; instead of on the
surface of the soil.
Primitive Method.
In comparison with the foregoing
plan there will he shown the print
tive method practiced by irrigators
before it was learned how to distrib-
ute water economically and to the
| best advantage. No, grading or leveling
was done on this tract; in fact, in
contour it is as nature left it. Water
is taken to the highest point on the
land to distribute itself over the
ground. The idea in this is to show
waste of water and soil by washing
and erosion.
The individual system, also to be
demonstrated, calls for piping water
to every tree. To. make it effective
the water must have head. The
| pipe. which may he small. is run to
within three feet of a tree To dis
| charge water into q circular ditch or
basin built around rhe tree. This
method is desirable in districts where
IA small amount Of WIt4r is desired to
do large amount of irrigatinA.
There is no loss from evaporation or
scepage, and only the ground in which
the tree grows receives the water.
The cost of installing this system is
much larger than for the open ditch
or hume system, but the difference is
soon made up on She cost of water.
or where it is paid for by the acre
! foot
Ssrb-Iri.iirlsioa Also.
Sub irrigating by means of open
bitches will also be shown. The
bitches are of such depth that the
water is absorbed without moistening
the surface. This method is advanta-
geous where soil has a tendency to
bake or become crusted after water
! ing.
Two tracts will show the practical
bility of watering steep land in open
ditches. The inclfnes on one tract are
I from 80 to, As degrees. The other
shows the terrace system, water be-
! ing dropped from one terrace to the
other. 1t will ke demonstrated that
land can. he irrigated by this plan
without wasting or erosion.
one form of the corrugation sys-
TEN is applied to. soil where the land
slopes in more than one direction the
bitches being made to follow the nat
ural contour which needs no grading.
! Water is supplied through one box
and the bitches spread out in fan
shape- aver the land.
Other Methods Shown.
Another plan of the so-called cor
rugation idea, best adapted to sugar
beet. alfalfa and grain lands with a
gentle slope, shows water distribution
by means Of N-shaped bitches or rills,
> IL inches deep and about IS inches
| apart.
Another system is to distribute wa
/ ter to each tree in an open iume. The
water is supplied from a head ditch
This is similar to the piping method
70 individual trees, but is a waste of
water, though the cost of installation
! is less
t.. VI. Speck, chairman of the prac-
! teal demonstration committee of the
| irrigation congress. will be assisted in
/ IN" demonstrations by H. Delepine an
! experienced engineer, who has charge
Of the work, and practical irrigators
! and growers from various parts of the
! United states and Canada in, explain
! Ing the various methods of watering
land To obtain the best result at the
! feast cost.