24 



HATCH EXPERIMENT STATION. 



[Jan. 



The field was kept in grass for two years, the average 

 yields being at the rates per acre : " Special " fertilizer : hay, 

 2,730 pounds; rowen, 1,122; fertilizer richer in potash: 

 hay, 2,557.5 pounds ; rowen, 1,149 pounds. The " special," 

 it will be seen, gave yearly 172.5 pounds more hay but 27 

 pounds less rowen than the other fertilizer. The larger 

 nitrogen application accounts for the excess in hay ; the lar- 

 ger potash application to the other plot produces the more 

 rowen. The stand of clover in the field was poor. It is 

 believed that, had it been good, the differences in yield of 

 rowen in favor of the fertilizer richer in potash would have 

 been larger. 



The sod was ploughed in the autumn of last year, fertili- 

 zers as usual applied and wheel-harrowed in this spring. 

 The crop this year was corn, which made perfectly normal 

 and good growth on all plots and gave a good yield. 



Yield of Corn, 1899. 



PLOTS. 



Ears 

 (Pounds). 



Stover 

 (Pounds). 



Plot 1 (lesser potash), . 

 Plot 2 (richer in potash), 

 Plot 3 (lesser potash) , . 

 Plot 4 (richer in potash). 



1,257.5 

 1,141.0 

 1,168.5 

 1,200.5 



1,090 

 1,140 

 1,120 

 1,120 



The crops this year are almost equal, — the "special" 

 giving a little more than 2 bushels more grain ; the fertilizer, 

 richer in potash, 100 pounds more stover. The former gives 

 somewhat the more valuable and the more profitable crop. 

 The advantage, however, is insignificant, amounting to only 

 25 cents per acre. 



