10 



and one hundred and twenty-five pounds of muriate of potash for 

 the latter. The plats, four in number, contain one-quarter of an 

 acre each. The results are shown below : — 



Plat No. 1, manure, stover, 902 pounds; grahi on ear, 972 pounds. 



Plat No. 2, manure and potash, stover, 9G5 pounds ; grain on ear, 

 842 pounds. 



Plat No. 3, manure, stover, 952 pounds ; grain on ear, 1,100 pounds. 



Plat No. 4, manure and potash, stover 1,002 jjounds ; grain on ear, 

 1,186 pounds. 



These figures make it evident that the combination of manure 

 and potash is practically equal in value to the larger quantity of 

 manure alone. On the two plats receiving manure and potash we 

 have 113 pounds more stover and 44 pounds less grain on the ear. 

 The gain in stover at $8 per ton is worth $0.45 ; the loss in grain 

 at 55 cents per bushel is worth $0.30. The manure applied per 

 plat where used alone must be charged at $7.50 ; the manure and 

 potash applied to the other plats at $5.68. The advantage clearly 

 lies with the combined manure and potash. On two plats the dif- 

 ference in the cost of application in favor of the manure and 

 potash amounts to $3.64. 



Special corn fertilizer has been further compared upon one acre, 

 the past having been the fourth successive season of such com- 

 parison with fertilizer richer in potash. There are four plats of 

 one-quarter of an acre each. The yields are shown below : — 



Plat 1, special fertilizer, stover, 762 pounds ; grain on ear, 919 pounds. 



Plat 2, fertilizer, richer in potash, stover, 789 pounds ; grain on ear, 

 854 pounds. 



Plat 3, special fertilizer, stover, 752 pounds ; grain on eai% 935 pounds. 



Plat 4, fertilizer, richer in potash, stover, 862 pounds ; grain on ear, 

 978 pounds. 



The fertilizer denominated " special" furnishes the amounts of 

 nitrogen, phosphoric acid and potash that would be supplied by the 

 application of 1 ,200 pounds of a special commercial corn fertilizer 

 of the average composition of all leading kinds offered in our 

 markets. The materials used are shown below : — 



