326 



PEINCIPLES OF SPRAYING 



Principles of Spraying. — Liquid sprays should usually be applied 

 on a bright day to give the liquid time to dry before rain. 



Fig. 229. — Three-row duster operated by gas engine; used on strawberries to combat 

 weevils. (New Jersey Station.) 



Fig. 230.— A Maryland orchard thoroughly sprayed with lime-sulfur. Every spot is 

 coated with the spray material to smother the scale insects and to destroy spores of all 

 diseases. (U.S.D.A.) 



The finer the mist formed in spraying, the more even will be the 

 spray on the surface of the plants. Damage to the plant is less 

 likely to result (Fig. 228). 



