SPRAYS AND SPRAYING 



139 



Cost of Spraying and Profits Derived. — In 1903, 

 at the farm of J. V. Salisbury & Sou, Phelps, N. Y., 

 the total expense of spraying' 1 4 acres five times was 

 $55.76, the items being as follows: 



504 pounds of copper sulphate, at 6 cents 

 8 bushels of lime, at 35 cents . . . 

 12 pounds of white arsenic, at 5J^ cents 

 55 hours' labor for man, at !"]% cents 

 47 hours' labor for team, at I7j^ cents 



Wear of sprayer 



$30.24 

 2.80 

 .66 

 9-63 

 8.23 

 4.20 



$55-76 



Cost of spraying per acre for each application was 

 80 cents. 



Bitshe/s 



Yield of sprayed rows, per acre 147 



Yield of unsprayed rows, per acre .... 83 



Increase in yield per acre ....... 64 



A good showing, considering that there was no blight 

 this year. 



64 bushels per acre on 14 acres (896 bushels), worth . $448.00 

 Less cost of spraying 55-76 



Net profit on 14 acres 

 Net profit per acre 



[92.24 

 28.01 



Mr. Salisbury sprayed potatoes for his neighbors at 

 80 cents per acre and furnished everything. In other 

 experiments conducted in 1 904 by the Geneva Experi- 

 ment Station, the cost of each application was as low 

 as 61 cents per acre, and the net profit as high as 

 $60.00 per acre. 



' (N. Y.) Geneva Eul. 241, p. 275. 



