1916.1 



PUBLIC DOCUMENT — No. 31. 



39 a 



Yields per Acre (Pounds) — Concluded. 



On the basis of 100 for nitrate of soda, the relative standing 

 of the different nitrogen plots and no-nitrogen plots, as meas- 

 ured by total yield during the past season, was as follows: — 



Nitrate of soda, . 

 Dried blood, 

 No nitrogen. 

 Sulfate of ammonia, 

 Maiiure, 



Grass and 



Clover 

 (Percent.). 



100.00 



102.46 



99.61 



99.48 



99.10 



The relative standing of the different materials as indicated 

 by total yield for the twenty-six years during which the experi- 

 ment has continued is as follows: — 



