44 



RESULTS OF THE ADDITION TO NOTHING OF 



Complete Barnyard Land 



Fertilizer. Manure. Plaster. Lime. 



Hard corn, bushels per acre, 12. 6.3 -5.1 -.1 



Soft corn, " " -2.6 -3.1 .3 .1 



Stover, pounds " 1270 1047 665 -307 



Fertilizer Manure Plaster Lime 



Value of net increment due to $10.80 $6.10 



Value of decrease due to $1.82 ,81 



Financial result, 1.201oss 18.90 loss 2.54 loss 1.77 loss 



These comparisons make it evident that this soil most needed 

 potash, which alone and in nearly every combination seems to have 

 produced a profitable increase. Phosphoric acid does little or no good 

 while nitrate of soda, especially when used where there is potash, 

 does produce a small increase. 



The manure, furnishing over four times the nitrogen, about the 

 same amount of phosphoric acid, and but about one-half the potash 

 that the complete fertilizer supplies does not produce as large a crop 

 as the latter. 



For this soil it is evident that for com a fertilizer should be rich in 

 potash; and that with such barnyard manure as ivas employed it would 

 abundantly pay to use considerable of this material. 



