322 



BOARD OF AGRICULTURE. [Pub. Doc. 



the phosphoric acid being more prominent in the grain and 

 the potash in the stalk and leaf. The manure and fertilizers 

 used per acre for our corn crops upon the college farm 

 during the past season, and the estimate of plant food sup- 

 plied to the soil and removed therefrom in the crops, are as 

 follows : — 



F< 



Nitrate of soda, . 



Dried blood, 



Dry fish, 



Cotton-seed meal, 



Plain superphosphate, 



Floats, . 



Muriate of potash, 



Manure, 



Nitrate of soda, . 



Dried blood, 



Dry fish, 



Plain superphosphate, 



Floats,. 



Muriate of potash, 



S 



eld Corn 



lage Corn. 



I desire to call your attention to the fact that in the case 

 of the crop for which fertilizer only was used the supply of 

 nitrogen was less than the estimated amount removed in the 

 crop. The field was one in which I felt sure that the decay- 

 ing humus could furnish the crop a considerable proportion 

 of the nitrogen required. 



In both cases an excess of both phosphoric acid and 

 potash was supplied. This was in accordance with my plan 

 to secure a large available supply of these constituents, 



