50 
and quickly worked into a fine mulch and prevents 
evaporation and baking. 
In setting up this system of irrigation, it is less 
expensive to buy the parts, rather than the complete 
system. Pipe can be purchased locally, and by getting 
the nozzles and drilling machine, much of the first cost 
can be saved. It takes only a minute or two to drill 
each hole. The pipe is held firmly clamped in a vise 
and the holes are drilled about three feet apart. They 
are threaded by the machine in the same operation 
and the nozzles can then be screwed in very quickly. 
We find it best to use posts about 8 V*> feet long 
made of %-inch pipe, and set about 12 to 15 feet apart. 
The post is pushed into the ground about two feet. This 
leaves sufficient clearance so that a tall man can walk 
underneath the pipeline without bumping his head. The 
pipeline is not in the way when cultivating or doing 
other work and this is a great item. A hanger is placed 
on top of each post. These are also made by the same 
company (The Skinner Irrigation Co., Troy, Ohio) and 
contain small wheels on which the pipeline turns. We 
like the pipe posts much better than wooden ones, as 
they can be pushed or hammered into the ground with¬ 
out digging post-holes and are easily transferred to an¬ 
other location. 
Each pipeline will water a strip 30 to 50 feet in 
width, depending on the pressure, and up to 300 feet in 
length. The first 100 feet next to the main can be 1 14 - 
inch pipe, the next 100 feet 1 -inch pipe and the last 
100 feet %-inch pipe. Any shortening of the line can 
be made on the large pipe. For mains, 1 14 -inch pipe can 
be used for three or four lines, but for more a larger 
size should be used. The larger the pipe for the mains 
