35 



like the rest of the field. Plot Xo. 1 receives no fertilizer and is a check result 

 of untreated land identical to Plot No. 2, which receives the dressing of fertilizer. 



This experiment should simply prove whether the fertilizer heing tested was 

 profitable to use or not for that particular soil and crop. In judging the result 

 it should not be forgotten that an increased yield does not necessarily mean an 

 increased profit. The cost of the fertilizer and its application should be deducted, 

 though apart from this very little more expense is entailed in dealing with a 

 maximum as compared with a minimum crop. 



The "Two Plot Experiment" is best suited to the testing of any complete 

 fertilizer mixture containing nitrogen, phosphoric acid and potash. If, however, 

 more detailed information is required regarding the deficiency of a soil m one 



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