1902.] 



PUBLIC DOCUMENT — No. 33. 



45 



Yield of Hay and Rowen, 1901 (Pounds) 



* Plots 2 and 4 weighed together on account of threatened storm ; hut, so far as could he 

 determined by the eye, the yields of the two plots were substantially equal. 



It will be noticed that the yields both of hay and rowen, 

 but especially of the latter, were considerably heavier on 

 plots 2 and 4 (i.e., the plots which received fertilizer richer 

 in potash) than on the others. The first crop on these plots 

 was excessively heavy, and lodged to a considerable extent. 

 The proportion of clover was much larger than on plots 1 

 and 3. The fact that the rowen crop on these plots was 

 rather more than double that on the others was due chiefly 

 to this difference in the proportion of clover. 



The cost per acre of fertilizers applied at the rates used 

 on plots 1 and 3 exceeds the cost per acre of fertilizers 

 applied at the rates used on plots 2 and 4 by about $4. 

 We have, then, as a result of this year considerably larger 

 yields at less cost. This field has been used continually in 

 this experiment since 1891. The crop was corn for the 

 years 1891 to 1896 inclusive, in 1897 and 1898 the field 

 was in mixed grass and clover, in 1899 and 1900 in corn. 

 The results of this experiment to date may be briefly sum- 

 marized as follows : — 



1. The crop of corn has been substantially equal on the 

 two systems of manuring. 



2. The crops of hay have been larger on the plots where 

 more potash has been used, and the quality has been better. 



3. The clover is relatively much more abundant on the 

 plots where more potash is used. This difference is much 



