33 



RESULTS OF THE ADDITION OF POTASH TO 



Nothing. 



Hard corn, bushels per acre, 39. 

 Soft corn, " " 1. 



Stover, pounds, " 2057 



Value of average net increment, 



Financial result, 



RESULTS OF THE ADDITION TO NOTHING OF 



Hard corn, bushels per acre. 

 Soft corn, " " 



Stover, pounds *■' 



Fertilizer. 



Value of increment due to $46.85 



Value of decrease due to $15.82 $3.57 



Financial result, 34.85 gain 5.43 gain 16.54 loss 4.53 loss 



The above comparisons shed no uncertain light upon the question, 

 " What did this soil need to produce corn ? " Alone and in every 

 combination, potash produces a remarkable increase; but nitrate of 

 soda, too, seems to have been required, for the combination of this 

 with potash produces a much larger crop than potash alone. Phos- 

 phoric acid, on the other hand, does comparatively little good how- 

 ever used. 



The manure produces a large increase ; but I cannot doubt that a 

 considerably lighter application with potash would have produced a 

 far larger profit. 



For this soil I am confident that the most profitable results would he 

 attained by using light dressings of manure with a little quick-acting 

 nitrogenoiis fertilizer and a considerable amount of potash. 



