124 



SPRAY MACHINERY AND SPRAY MATERIALS 



pump which usually has two small brass ball valves. The 

 pump cylinder and air chamber is usually made of brass. 

 This pump is capable of developing considerable pressure 

 and is valuable for spraying many kinds of plants. The 

 pump is separate and in order to spray it must be set into a 

 bucket containing the spray material. This is the chief 

 drawback to this sprayer, since it is awkward to carry around 

 in an open bucket filled with the spray mixture. A small 

 piece of hose and a spray nozzle is attached to this pump. 



Fig. 57. — A good hand sprayer tor small truck and bush fruits. 

 (The Deming Company .^l 



Automatic Sprayer. — The automatic spraj'er is a more 

 convenient form than the bucket sprayer. This sprayer can be 

 filled and then pumped up with air, and the entire attention 

 of the operator can be de\oted to spraying. The automatic 

 sprayer is \'ery con^'enient and easy to carry. It is particu- 

 larly good for truck crops and small bush fruits. 



The tank of this sprayer should be made of brass. This 

 is highly desirable, because if it is made of galvanized iron 

 it corrodes very rapidly when used for Bordeaux mixtiu'e. 

 The corroding action on the metal makes the life of the 



