New York Agricultural Experiment Station. 403 



fruit as recorded in pounds was 45 per cent, greater where the 

 trees were sprayed than where they were not sprayed. 



The extra cost of picking, packing and hauling to market 

 would be, in this case, 13 cents. With the apparatus used 

 by Messrs. Maxwell & Bros, the cost of spraying would be 

 8 cents per tree, counting the applications which were ac- 

 tually made, i. e., two applications for sixteen trees and three 

 applications for thirty-two trees. Thus the extra ex])ense 

 of securing and putting on the market an increased yield 

 per tree of 24.48 pounds of fruit was only 21 cents. So 

 it appears that spraying for leaf-spot in this instance secured 

 an average increase of 24^ pounds of marketable fruit per tree 

 at a cost of less than one cent per j)ound. 

 26 



