1900. J 



PUBLIC DOCUMENT — No. 33. 



23 



2,758 pounds ; hay, 2,244 pounds ; and rowen, 1,170 pounds. 

 These products would have been worth $46.50. In using 

 the large amount of manure alone, then, one would in eflect, 

 allowing the manure to cost $5 per cord on the land, have 

 expended $75 for products worth but little more than one- 

 half that sum. 



When, further, we note that at present the lesser manure 

 and potash is producing the larger crop of grain, the superior 

 economy of the system is evident. 



"Special" Corn Fertilizer v. 



Potash. 



Fertilizer richer in 



This experiment was begun with a view to comparing the 

 results obtained with a fertilizer proportioned like the aver- 

 age ^^ special" corn fertilizers found upon the markets in 

 1891 with those obtained with a fertilizer richer in potash, 

 but furnishing less nitrogen and phosphoric acid. 



Corn was grown during each of the years from 1891 to 

 1896 inclusive. From 1891 to 1895 it was found that the 

 fertilizer richer in potash gave the more profitable results. 

 In 1896 there was no practical difference. It was decided 

 during the season of 1896 that it might be possible to derive 

 a greater benefit from the larger quantity of potash applied 

 to two of the four plots, if grass and clover should be grown 

 in rotation with the corn. Accordingly the land was seeded 

 with a mixture of timothy, red-top and clover in the stand- 

 ing corn in July, 1896. The field is divided into four plots, 

 of one-fourth of an acre each. The materials supplied to 

 the several plots are shown in the following table : — 



FERTILIZERS. 



Plots 1 and 3 

 (Pounds Each), 



Plots 2 and 4 

 (Pounds Each). 



Nitrate of soda, 



Dried blood, .' 



Dry ground fish, 



Plain superphosphate, . 



Muriate of potash, . 



Cost of materials per plot. 



20.0 

 30.0 

 30.0 



226.0 

 22.5 



$3 23 



18.0 

 30.0 

 20.0 



120.0 

 60.0 



$3 10 



