262 



Bulletin 261. 

 TABLE iL — continued 



*As the treatment of plats 727 and 728 was not the same in 1905 as in 1906 

 and 1907, as indicated in the column marked " treatment ", the apparent increase 

 for 1905 is not stated, and consequently the average is not given. 



During the season of 1907, the increased growth of timothy on 

 the plats receiving nitrogen was noticed very early in the spring and 

 seemed to be in almost direct proportion to the amount of nitrate added. 

 The same was true in the case of the plats receiving farm manure, while 

 the plats receiving mineral fertilizers alone did not show very much 

 increased growth until the latter part of May or the first of Jtuie. 



In examining Table II, the most striking fact to be noticed is the 

 marked influence of the nitrogen in increasing the production of hay 

 as compared with the other fertilizing elements. This increase remains 

 quite consistent throughout the three years the test has been running. 

 The average yield of hay on the eight untreated plats for the years 1905, 



