14 



thrown in all directions among the branches. The spray must be ap- 

 plied with great force (60 to 100 pounds .or more) in order that the 

 stream be broken into a tine mist. 



The tank may vary from a 50-gallon barrel to a tank of 250 gallons 

 capacity, which may be mounted on an ordinary wagon; a barrel may 

 be hauled on a sled. The tanks should be solidly built and held together 

 with iron rods. If the trees are tall, it will be found to be of great 

 advantage to have a platform erected on the wagon upon which the 



Fig. 2.— Spraying outfit for treating tall trees— (after Gould). 



men can stand (fig. 2). The capacity of the hand-power outfit depends 

 upon many factors, as distance of water supply, size of trees, and 

 number of men and nozzles. Three men with a 200-gallon tank and 

 2 lines of hose, each fitted with 2 nozzles can spray about 250 average- 

 sized trees per day. 



Gasoline-power sprayers. — If an orchard of more than 1,000 trees is 

 to be sprayed, it will be found advisable to use a gasoline-power out- 

 fit (tig. 3). Many dealers in spraying apparatus have placed machines 



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