a a ee 
—_vTrerr ses’? OP) HA. 
Spraying for the Alfalfa Weevil. 9 
If machinery must be purchased or hired and fitted for alfalfa 
spraying, it should be ordered months in advance. Local dealers in 
any community where people are beginning to spray for the alfalfa 
weevil are likely to have sold out their stock long before the season 
has begun. 
: NECESSARY EQUIPMENT. 
The necessary equipment for spraying alfalfa consists of (1) a 
truck or vehicle; (2) a tank with an agitator; (83) a pump; (4) a 
pressure gauge; (5) an engine and pumping jack, unless the pump is 
to be driven by hand; (6) a strainer; (7) a boom or pipe, for dis- 
tributing the liquid from the pump; and (8) spray nozzles. 
Fic. 6.—A homemade spray outfit. No part of this equipment was originally designed 
for spraying. Even the nozzles were homemade. In convenience and utility it is 
equal to any spray machinery manufactured. ; 
These essentials may all be contained in a barrel-pump outfit 
carried in a. wagon, or they may be in the form of a 200-gallon tank 
mounted with a gasoline engine and pump on a special frame and 
truck. Any pump, with brass lining, valves, and pistons, capable 
of delivering four-fifths of a gallon or more per minute and main- 
taining a pressure of 75 pounds, can be used for this purpose on a 
scale suited to its size. Figure 6 shows a spray outfit which was 
assembled under difficulties from materials already on hand. 
CAPACITY OF THE OUTFIT. 
The size of the outfit should be adapted to the work it is to per- 
form and can best be calculated by beginning at the nozzle and 
11695°—20 2, 
