288 DISEASES OF TROPICAL PLANTS CH.X 



attached to the spray tank. They furnish the ideal 

 spray, but they are as yet far from perfect and have 

 many faults. In large orchard operations where a 

 central air-compressing plant can be maintained and 

 compressed air be used for power, this type of machine 

 has proved very satisfactory. 



Spraying Accessories. Every spray outfit should be 

 supplied with two lengths of good rubber hose at least 

 twenty-five feet in length. Bamboo extension rods are 

 a necessity where trees are to be sprayed. Good brass 

 strainers should be provided. Extra nozzles and hose 

 should always be kept on hand. The nozzles should be 

 of a type that furnish a mist-like spray at a minimum 

 pressure. Nozzles of the Vermorel or Cyclone type 

 are most desirable. A good nozzle should not dribble, 

 and should be of such construction that it can be easily 

 cleaned when clogged. 



