1916. 



PUBLIC DOCUMENT — No. 31. 



43 a 



The average yields to date under the three systems of top- 

 dressing are: — 



Pounds per 

 Acre. 



When top-dressed with manure, 6,007 



When top-dressed with bone and potash, 5,898 



When top-dressed with wood ashes, ^ 5,610 



The clover, which had largely disappeared during the recent 

 dry seasons, was quite abundant this year, especially in the 

 second crop. 



Sulfate of Ammonia v. Nitrate of Soda as a Top-dressing 

 FOR Permanent Mowings. 



The experiment to compare sulfate of ammonia and nitrate of 

 soda when used as a top-dressing for permanent mowings has 

 been continued. There are five plots, all of which receive the 

 follow^ing mixture: bone meal, muriate of potash, slag. 



In addition, two plots receive sulfate of ammonia and two 

 plots receive nitrate of soda, the two being used in such quan- 

 tity as to supply equal nitrogen. This is the eighth year of the 

 experiment. The results obtained are in favor of the nitrate of 

 soda for the first crop, with very little difference between the 

 two for the second crop, and the check plot or no-nitrogen plot 

 producing more rowen than either the nitrate of soda or sulfate 

 of ammonia plots. The heavier rowen crop on the no-nitrogen 

 plot is due to the fact that the growth on this plot is mostly 

 clover. These results are in accord with those obtained in pre- 

 vious years and indicate in a striking way that beneficial 

 results are obtained by top-dressing with sulfate of ammonia 

 and nitrate of soda, and that the results are immediate but not 

 lasting. 



1 Slag and potash nov/ used. 



