204 



BOARD OF AGRICULTURE. [Pub. Doc. 



Relative Yields of Dry Matter and Protein in Hay of Mixed 



Grasses. 



Relative Yields of Dry Matter and Protein in Corn and Corn Stover. 



Experiments with Pure Species of Grasses. 



The increase in the protein of the crop, due to the use of 

 nitrogenous fertilizers, is even more strikingly shown in the 

 experiments on the pure species of grasses. These experi- 

 ments have been continued through a period of seven 

 years on the same plots. The plots were so small that no 

 attempt was made to study the effect of the fertilizer on the 

 yields, but samples for analysis have been taken each year 

 at the time of harvesting, which usually was at or very soon 

 after the blossoming stage. In these experiments it became 



