It is also often desirable
to convey water to plants through pipes laid under the ground,
perforated at various intervals to allow the water to escape and
soak into the soil in the neighborhood of the plant roots. All such
refined methods of irrigation should be carefully investigated by
the who wants the largest results from his limited water supply.
Though such methods may seem cumbersome and expensive at first, yet
they will be found, if properly arranged, to be almost automatic in
their operation and also very profitable.
Forbes has reported a most interesting experiment dealing with the
economical use of a small water supply under the long season and
intense water dissipating conditions of Arizona. The source of
supply was a well, 90 feet deep. A 3 by 14-inch pump cylinder
operated by a 12-foot geared windmill lifted the water into a
5000-gallon storage reservoir standing on a support 18 feet high.
The water was conveyed from this reservoir through black iron pipes
buried 1 or 2 feet from the trees to be watered. Small holes in the
pipe 332 inch in diameter allowed the water to escape at desirable
intervals.
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