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 Ib. 



= $102 a Ton for 

 Nitrate of Soda. 



=$80 a Ton for 

 Nitrate of Soda. 



= $71 a Ton for 

 Nitrate of Soda. 



The Nitrogen in Nitrate off Soda, in 1903, cost 15 cents per Ib. 



The Available Phosphoric Acid Cost per Ib. 



in low grade. 

 in medium grade. 

 in high grade. 



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

 per Ib. 



The Actual Potash Cost per Ib. 



in low grade, 

 in medium grade. 



in high grade. 



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

 per Ib. 



