No. 7. 



DEPARTMENT OF AGRICULTURE. 



14a 



TABLE A. 



Average Yield of Wheat, 1884-1888-1892. 



m 



I 

 Ci 



O 



a 

 s 

 o 



n 



I 



OS 



a 



O 



a 

 I 



o 



Soluble P2O5, dissolved bone black, ., 

 Reverted P2O5, dissolved bone black. 



Insoluble P2O1S, ground bone 



Insoluble P2O6, S. C. rock 



No phosphoric acid, , 



Nothing, 



28.23 

 29.90 

 31.58 

 31.56 

 30.57 

 22.52 



3,014 

 3,208 

 3,339 

 3,338 

 2,798 

 1.966 



4,708 

 5,002 

 6,234 

 5,232 

 4,632 

 3,317 



Average Yield of Grass, 1885-89-U8. 



c 



3 

 O 



a 

 I 



o 



Soluble P2O6, dissolved bone black, 

 Reverted P2O5, dissolved bone black 



Insoluble P2O6, ground bone 



Insoluble P2O5, S. C. rock 



No phosphoric acid 



Nothing, 



3,167 

 3,300 

 3,365 

 3,133 



2,492 

 2,048 



Average Yield of Cora, 1886-90-94. 



Soluble P2O5, dissolved bone black. 

 Reverted PjOs, dissolved bone blai k 



Insoluble PoO^, ground bone 



Insoluble PjOs, S. C. rock 



No phosphoric acid 



Nothing, 



48. f!fi 

 49.60 

 51.96 

 47.64 

 40.68 

 33.07 



1,942 

 1.937 

 2.073 

 1.P08 

 1,667 

 1,027 



