COST OF SPRAYING 



45 



other power. The points to be desired are evenness of 

 flow, economy of sulphur, and ease of operation. The 

 discharge of the sulphur from the exit is shown in Fig. 14. 



COST OF SPRAYING 



Since both the cost of labor and of materials vary, and 

 the amount of each required is determined by the size 

 of the plants to be sprayed, no accurate estimate of the 



Fig. 15. — The nozzles are turned at an angle to the rod so that the spray may be 

 directed upward or downward. After Faurot. 



cost of spraying can be given. Still reasonably reliable 

 estimates may be made from the following examples. 



Orton ' estimates the cost of spraying cucumbers or 

 cantaloupes as follows : " On the average, 15 acres per 



' Orton, W. A., U. S. Dept. Agr. Farmers' Bui. 231, p. 22. 



