34 



EXPERIMENT STATION. 



[Jan. 



The fact that where the clover was relatively thin grasses 

 came in to a considerable extent serves to obscure the effect 

 of the different materials supplying nitrogen on the clover in 

 the first crop. The second or rowen crop was very small on 

 all plots. The principal reasons for this were two: (1) the 

 first crop was cut late on account of bad weather; (2) there 

 was hut little rain during the latter part of the summer. The 

 3'ield of rowen on the no-nitrogen plots, however, stands rela- 

 tively much higher as compared with the yield on the other plots 

 than was the case with the first crop. This difference was due 

 to the fact that there was relatively little grass mixed with the 

 clover in the rowen crop. 



The average yields of this year on the several fertilizers are 

 shown in the following table : — 



As a result of all the experiments previous to this year, the 

 materials furnishing nitrogen have produced crops in the fol- 

 lowing relative amounts : — 



Relative Crop Averages. Percent. 



Nitrate of soda 100.00 



Barnyard manure, ....... 96.63 



Sulfate of ammonia, ....... 91.08 



Dried blood, 89.14 



No nitrogen, . . . . . . . .70.24 



Similar averages for this year are as follows 



