POTASH PAYS * 



should take small plots of ground of the same size and 

 give each one the same kind of treatment, except as to 

 its fertilization. Three such plots may be laid out as 

 follows : 



Plot No. 1 



Check Plot No Fertilizer Applied 



Plot No. 2 



Use c complete Fertilizer, containing Potash, Phosphoric Acid 

 and Nitrogen 



Plot No. 3 



Apply an ' 'Incomplete Fertilizer, ' ' containing only 

 Phosphoric Acid and Nitrogen 



Now compare the results. The difference in yields on 

 Plots Nos. 1 and 2 will show the gain from using a complete 

 fertilizer on the land. 



The difference in the yields on Plots 2 and 3 will show 

 the loss from not having Potash in the fertilizer. 



Just such experiments have been made by a number of 

 practical farmers in California. They cover a wide range 

 of soils in that State and many different crops. The in- 

 teresting results thus obtained are set forth in the following 

 pages. 



