314 



BOARD OF AGRICULTURE. 



Average. 



No fertilizer 



< Dissolved bone black, 



\ Dissolved bone black, 

 "i Muriate of potash. 



f Dissolved bone black, 



< Muriate of potash, 



( Sulphate of ammonia, 



^ Fine ground bone.... 



Containing phos- 

 phoric acid. 



Containing phos- 

 phoric acid and 

 potash. 



Containing phos- 

 phoric acid, pot- 

 ash and nitrogen. 



Containing phos- 

 phoric acid and 

 nitrogen. 



9 



o 



" J; 



lbs 

 1,625 



2,265 



12,067 



11,492 



1,925 



Yield Per 

 Acre. 



Grain. Fodder. 



Increase of 

 yield over 



plots with no 

 Fertilizer. 



Grain. iFodder. 



bush. 



4.6 



66.7 



55.5 



2.0 



lbs. 



292 



5487 



5730 



145 



The results of Mr. Starrett's experiment are the most striking of 

 au3' secured. The}' show how the application of a small quantit}- of 

 a particular kind of plant food may cause abundant and profitable 

 growth where otherwise the crop would be very nearly worthless. 

 These results also point in a marked manner to the necessity of ap- 

 plying such ingredients to plant food as make good the deficiencies 

 of the soil. When the bone black was used alone the crop was but 

 little better than when no fertilizer was applied, but when this was 

 combined with muriate of potash the crop increased eight-fold. 

 Again, the further addition of a nitrogenous fertilizer to the mixture 

 added nothing to the growth of the corn. 



