lilU 



Food for Plants. 



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.) 



The Nitrogen Cost per lb. 



!(gil^o'6[ni flow Dcrijdld: 



$102 a Ton for 

 Nitrate of Soda. 



=$80 a Ton for 

 Nitrate of Soda. 



a Ton for 

 ate 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 M cents 

 per lb. 



Thel (Actual Potash Cost per lb. 



in low grade. 



in medium grade. 



in high grade. 



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

 per lb. 



