FERTILIZERS. 



After the original Chart arranged by Director J. L. Hills, of the 



Vermont Experiment Station, for the U. S. Government 



Fertilizer Exhibit at the St. Louis Exposition. 



Average cost of a pound of plant food in "low," 

 "medium" and "high" grade "complete fertilizers" 

 (Vermont, 1903.) 



Food for 

 Plants 



281 



The Nitrogen Cost per lb. 



idriiifi] Il®w. (Dirndl d 



= $80 a Ton for 

 Nitrate of Soda. 



= $102 a Ton for 

 Nitrate of Soda. 



$71 a Ton for 

 Nitrate of Soda. 



The Nitrogen in Nitrate of Soda, in 1903, cost 15 cents per lb. 



The Available Phosphoric Acid Cost per lb. 



in low grade. 



in medium grade, 

 in high grade. 



The Phosphoric Acid in Acid Phosphate, in 1903, cost 4 cents 

 per lb. 



The Actual Potash Cost per lb. 



in low grade, 

 in medium grade. 



n high grade. 



The Actual Potash in Sulphate of Potash, in 1903, cost 5 cents 

 per lb. 



