New York Agkicultural Experiment Station. 237 



Diagram 2. — Showing Location and Yields in the Cassville Experiment. 



Double-sprayed five times . 

 Single-sprayed five times. . 



f- 



Check. 



188.7 bu. per a. 

 166 . 1 bu. per a. 



81.7 bu. per a. 



Single-sprayed five times. . 

 Double-sprayed five times . 



162.5 bu. per a. 

 177 . 3 bu. per a. 



Average yield of double-sprayed rows, 183 bu. per acre. 



Average yield of single-sprayed rows, 164.3 bu. per acre. 



Yield of middle check row, 81.Y bu. per acre. 



Gain due to single-spraying, 82.6 bu. per acre. 



Gain due to double-spraying, 101.3 bu. per acre. 



With potatoes selling at 70 cts. per bushel, single-spraying gave 

 a net profit of $52.72 per acre while double-spraying gave a net 

 profit of $60.71 per acre. 



