SPRAYING 



249 



In the first two cases two men were required to spray each tree, 

 in the last three only one man was needed. A constant pressure 

 of 175 pounds was used in each case. 



Since the amount of spray material that passes through a nozzle 

 under a certain pressure is almost constant, the shorter the time 

 taken to spray a tree thoroughly, the less will be the material used 

 and consequently the less will be the expense of spraying. There- 

 fore, I think these figures will prove to others what they proved 



Fig. 114. At work in the orchard 

 Spraying apple trees with Bowker's insecticide and fungicides 



to me — that to save time and material it is best to spray all small 

 trees against the wind, but large or tall trees with the wind. 



Spraying machinery, tools, etc. When there are 500 or more 

 trees a power outfit is much better than a barrel pump, and will 

 be a paying proposition. The spraying can be done in this way 

 more cheaply, easily, and thoroughly, as the pressure is higher and 

 more even, the agitation better, and less time and fewer men are 

 required for the same amount of work. 



On smaller orchards the barrel pump is perhaps more suit- 

 able, because less expensive. In many sections small growers can 



