No. 6. 



DEPARTMENT OF AGKICULTUUE 



527 



Average Composition aiid Guaranty Compared. 



Fall, 1911. 

 Phosphoric acid: 



Total 



Available 



Potash, 



Nitrogen 



Spring, 1912. 

 Phosphoric acid: 



Total 



Available, 



Potash 



Nitrogen 



Fall, 1912. 

 Phosphoric acid: 



Total 



Available, 



Potash, , 



Nitrogen, 



Spring, 1913. 

 Phosphoric acid: 



Total 



Available, 



Potash 



Nitrogen 



Fall, 1913. 

 Phosphoric acid: 



Total 



Available 



Potash, 



Nitrogen 



Spring, 1914. 

 Phosphoric acid: 



Total 



Available 



Potash 



Nitrogen, 



Fall, 1914. 

 Phosphoric acid: 



Total, 



Available 



Potash, 



Nitrogen, 



Spring, 1915. 

 Phosphoric acid: 



Total 



Available 



Potash 



Nitrogen, 



Fall, 1915. 

 Phosphoric acid: 



Total 



Available 



Potash 



Nitrogen 



