114 



MISSOURI AGRICULTURAL REPORT. 



pounds per ton of manure ; manure being taken from the open barnyard 

 where it had lain during the winter, for the "'yard manure" series, and 

 from box stalls, where it had been accumulating for several months, 

 for the "stall manure" series. 



After dusting the manure with the various materials it has been 

 allowed to lie in heaps for a few weeks, when it has been spread on 

 the clover sod and plowed under for corn. This method of leaving the 

 treatment until spring has been followed in order to make sure of using 

 the same quantity of each material on uniform lots of manure. It 

 is believed that the better way, as a farm practice, is to use the conserving 

 materials daily in the stables, while the manure is accumulating, in order 

 to have them in contact with the manure as long as possible before it 

 is drawn to the field. This is believed to apply especially to floats, as it 

 would seem most desirable that this material should be subjected for a 

 considerable time to the direct action of the manure. The results of this 

 test for the last six years, omitting the first rotation, as in the other test, 

 are given in table XII. 



XII. -TREATMENT OF FARM MANURE: SIX-YEAR AVERAGE INCREASE PER 

 ACRE, COST OF TREATMENT AND VALUE OF INCREASE. 



Manure and treatment. 



Cost of 

 treat- 

 ment. 



Increase per acre. 



Corn. 



Wheat. 



Ear- 

 corn 

 bus. 



Stover. Grain 

 lbs. bus. 



Straw 

 lbs. 



Hay 



lbs. 



Value of increase. 



Total 



per 



acre. 



Net 



per 



acre. 



Per 

 ton 

 of 

 man- 

 ure. 



Yard manure untreated . . 



With gypsum 



With kainit 



With floats 



With acid phosphate 



Stall manure untreated.. 



With gypsum 



With kainit 



With floats 



With acid phosphate 



$1 28 

 2 72 



1 28 



2 40 



1 28 



2 72 



1 28 



2 40 



15.45 

 20.99 

 21.37 

 22.22 

 28.60 

 21.6t> 

 24.20 

 26.31 

 28.95 

 31.94 



837 

 1,166 

 1,328 

 1,3;9 

 1,388 

 1.281 

 1.530 

 1,736 

 1,768 

 1,765 



8.87 

 13.40 

 12.21 

 14.51 

 15.70 

 11.32 

 14.18 

 14.93 

 17.23 

 17.68 



924 

 1,314 

 1,174 

 1,384 

 1,506 

 1,126 

 1,502 

 1.611 

 1,697 

 1,774 



686 

 1,022 

 1,293 

 1,727 

 1,826 

 1.309 

 1,331 

 1,948 

 2.504 

 2,648 



$18 20 

 26 27 

 26 65 

 28 71 

 34 89 

 26 00 

 30 15 

 34 47 

 38 73 

 41 93 



$18 20 

 24 99 

 23 93 



27 43 

 32 49 

 26 00 



28 87 

 31 75 

 37 45 

 39 53 



40 27 



3 12 



2 99 

 ^ 43 



4 06 



3 25 

 3 til 



3 97 



4 68 

 4 94 



This table shows that 320 pounds of acid phosphate and 8 tons 

 of stall manure, used in combination, have produced every 3 years, as 

 the average of six 3-year rotations, a total increase to the value of $41.93, 

 or within a few cents of the same amount as that produced in 5 years 

 by the same quantity of acid phosphate in combination with 260 pounds 

 of muriate of potash and 480 pounds of nitrate of soda. Our analyses 

 indicate that the 8 tons of manure have carried about the same quantity 



