166 



EXPERIMENT STATION. 



[Jan. 



Ill the nitrogen series the sugar was determined in each root 

 and then averaged for the plot as in the nitrogen investigation, 

 but in the superphosphate and potash series only two roots 

 from each plot were used. 



Effect of Nitrate of Soda on Sugar. 



No Nitrate. 



Loiv Nitrate. 



Spring application, . 

 Summer application, 

 Spring and summer application, 



25.70 

 13.30 



Medium Nitrate. 



Spring application, . 

 Summer application. 

 Spring and summer application. 



27.84 

 25.90 



High Nitrate. 



Spring application, . 

 Summer application. 

 Spring and summer application. 



