The Bulletin. 27 



(9) Tliat the yields from the addition of lime to nitrogen, phos- 

 phoric acid and jwtash were smaller than from the three fertilizer 

 constituents combined. 



The most im[)ortant constituent in producing increased j'ields and 

 profits on this soil was phosphoric acid. A^iti'ogen and potash singly 

 or combined, gave good returns when used with phosphoric acid, but 

 were of little or no value when used alone or with each other. Nitro- 

 gen added more largely to the yields than did potash. 



