56 



RESULTS OF THE ADDITION TO NOTHING OF 



Hard corn, bushels per acre, 

 Soft corn, " " 



Stover, pounds " 



Value of net increment due to 

 Value of decrease due to 

 Financial result, 



The evidently uneven character of this half-acre tends to obscure 

 results. The nothing plots varied from 10 bushels up to 31 bushels 

 yield of hard corn per acre. Still the indication is strong that a fer- 

 tilizer for corn must be rich in potash to give profitable returns on 

 this land. The nitrate of soda also appears to have been more bene- 

 ficial than in most of our experiments. Neither lime, nor plaster 

 has apparently produced results of any significance. 



The manure has produced a better crop and a larger apparent 

 increase than the '' complete fertilizer" ; but in it were applied more 

 than five times the nitrogen, nearly twice the phosphoric acid, and 

 one and one-fourth times the potash furnished in the fertilizer. 



South Half Acre. 



RESULTS OF THE ADDITION OF NITROGEN TO 



Muriate Phosphoric 

 Phosphoric of Acid and Average 



Nothing. Acid. Potash. Potash. Result. 



Hard corn, bushels per acre, 20.1 11.3 4.1 9.4 11.2 



Soft corn, " " -.5 1.1 .3 .5 .4 



Stover, pounds, " 533 723 610 995 715 



Value of average net increment, $9.75 



Financial result, 5.75 gain 



RESULTS OF THE ADDITION OF PHOSPHORIC ACID TO 



Nitrate Muriate Nitrate 

 • of • of and Average 



Nothing, Soda. Potash. Potash. Result. 



Hard corn, bushels per acre, 5.3 -3.5 -6.6 -1.3 -1.5 



Soft corn, " " -.9 .7 -.6 -.4 -.3 



Stover, pounds " 527 717 180 565 497 



Value of average net increment, $ .10 



Financial result, 4.70 loss 



