COST OF SPRAYING 



47 



three men, each at $1 per daj^ The following table gives 

 the cost per acre of the material and labor for each of the 

 6 sprayings : — 



For potatoes " the items of expense of spraying 10.4 

 acres five times were as follows : — 



234 pounds copper sulphate at 7 cents 



195 pounds prepared lime at 11 cents 



90 quarts arsenite of soda solution at 2i cents 



70 hours labor for man and horse at 30 cents 



Wear on spraj^er 



Total 



116.38 



2.92 



2.10 



21.00 



6.50 



$48.90 



"The total expense of spraying was $4.70 per acre or 94 

 cents per acre for each application." ^ 



According to Kinney - the cost of spraying apple trees 

 twice with combined Bordeaux mixture and Paris green, 

 and once with Bordeaux mixture, has been estimated as fol- 



1 Stewart, F. C, and others, N. Y. (Geneva) Agr. Exp. Sta. Bui. 290, 

 p. 257. 



== Kinney, L. F., R. I. Agr. Exp. Sta. Bui. 31, p. 15. 



