FARM MANUBBS 



611 



Conserving Effect of Reinforcing Agents on Manure 

 Exposed for Three Months 





Value op 



A Ton op 





Treatments 



Manuke 



Pehcentage 

 OF Lobs 





In January 



In April 



No treatment 



$2.19 



S1.41 



36 



Gypsum 



2.05 



1.48 



38 



Kainit 



2.24 



1.45 



35 



Floats 



2.81 



2.04 



24 



Acid phosphate 



2.34 



1.65 



29 



It is immediately evident that kainit and gypsmn do not 

 conserve the manure, and, although acid phosphate and 

 floats show some influence, it is slight. The principal 

 benefit from remforcing manure, if any, must therefore 

 be as a balancing agent. The figures from Ohio ^ over a 

 period of fourteen years in a rotation of corn, wheat, and 

 hay may be taken as evidence regarding this point. 

 The manure was added to the corn at the rate of 8 tons 

 to the acre. The reinforcing was 40 pounds to the ton 

 of manure in every case : — 



The Reinforcing of Fresh Manure 



Tkbatment 



Total Net In- 



CEEASED VaI/XTE 



OF Crop to the 

 Rotation 



Net Increased 



Yield to the Ton 



of Manube 



Manure plus floats .... 

 Manure plus acid phosphate . 

 Manure plus kainit .... 

 Manure plus gypsum .... 

 Manure alone 



$35.94 

 38.55 

 29,67 



28.48 

 26.48 



S4.49 

 4.82 

 3.71 

 3.56 

 3.31 



1 Thome, C. E,, and others. Plans and Summary Tables 

 of the Experiments at the Central Farm. Ohio Agr. Exp. Sta., 

 Cir. 120, p. 112. 1912. 



