EXPERIMENTS WITH POTATOES 



119 



Experiment VII. 



Comparative results from applying the Qotnmercial fertil- 

 izer all above the seed in the hill, and the ordinary method of 

 applying it below the seed. Seven hundred and fifty pounds of 

 the potato mixture were used in each plot. 



The following table gives the comi)arative results: 



Conclusion. — (1) This experiment, with a single exception, 

 gives the larger yield in favor of the plots where the commer- 

 cial fertilizer was applied above the seed. 



(2) Where barnyard manure was also used at the rate of 15 

 cords per acre the yield was 18 bushels j)er acre larger where 

 the commercial fertilizer was applied above the seed. The 

 average of the two plots with the commercial fertilizer applied 

 above the seed was 417 bushels per acre, while the average of 

 the three idiots with the commercial fertilizer applied below 

 was 399 bushels. 



(3) Where no barnyard manure was used and only the com- 

 mercial fertilizer used above as compared with others below, 

 the yield was 298 bushels above as compared with the average 

 of three jDlots with the fertilizer applied below, 280^ bushels, 

 or 18^ bushels in favor of the former. 



(4) According to results thus obtained in this experiment, the 

 applying of the commercial fertilizer above the seed seems to be 

 of equal importance whether barnyard manure is used or not. 



