SPRAYING 



8 9 



are a great many different makes on the market, 

 most of them conform to two general types, the 

 bordeaux and the vermorel (see Figures 47-49). 

 It may be pointed out that of these two types of 

 nozzle the vermorel gives the finer spray, while the 

 bordeaux throws to the greater height. The ver- 

 morel nozzle should be used by preference wher- 

 ever the work can be readily reached, as the fine 

 misty spray is much more 

 effective in coating the 

 leaves, while it is at the 

 same time more economical 

 of the solution. When the 

 tops of large trees have 

 to be reached, however, 

 it is necessary to use a 

 nozzle with more squirt 

 to it. A good practical 

 arrangement consists in 

 having two leads of hose 

 on the spray pump, one 

 fitted with vermorel nozzles, 

 the other with the bor- 

 deaux. Then the man who 

 handles the bordeaux nozzles will do the work in 

 the tree tops while his co-workman with the ver- 

 morel nozzles gives his attention to the lower 

 branches. 



Spraying outfits as a whole may be conveniently 

 classified into three types, the knapsack sprayer, 

 the barrel sprayer and the power sprayer. Of these 

 the knapsack sprayer is not much used nowadays. 

 Even for small gardens it is unsatisfactory, the 

 small barrel pumps being as cheap and much more 

 efficient. 



FIG. 47 NOZZLE OF 

 DEAUX TYPE 



