!New York Agricultural Experiment Station. 449 



(1) Effect of fertilizers on yield. — The use of commercial fer- 

 tilizer increased thle yield of beets in every instance. In the Sta- 

 tion experiments, it is noticeable that the same amount of fertilizer 

 on different plats gave widely varying results. Thus, with 500 

 pounds of fertilizer, we obtained in one case 21,375 pounds of 

 beets and in the other case over 27,000 pounds. In the Fayette- 

 ville work, the agreement in results on duplicate plats was much 

 closer. In the Station work the highest average yield from du- 

 plicate plats was given when 1,000 pounds of fertilizer were used. 

 In the Fayetteville work the largest yield was given with 1,500 

 pounds of fertilizer, the yield increasing with increased application 

 of fertilizer. 



Averaging all the results, we can make the following statements: 



(a) When 500 pounds of fertilizer per acre were used, the in- 

 creased yield of beets, trimmed and washed, varied from 950 

 pounds to 6,715 pounds and averaged 4,700 pounds. 



(b) When 1,000 pounds of fertilizer per acre were used, the in- 

 creased yield of beets, as compared with the use of no fertilizer, 

 varied from 5,825 pounds to 6,500 pounds and averaged 6,110 

 pounds. . As compared with the yield obtained by use of 500 

 pounds of fertilizer, the use of 1,000 pounds gave an average in- 

 crease of 1,400 pounds. 



(c) When 1,500 pounds of fertilizer were used, the increased 

 yield of beets, as compared with the use of no fertilizer, varied 

 from 3,400 pounds to 8,730 pounds and averaged 6,950 pounds. 

 As compared with 500 pounds of fertilizer, there was an increased 

 yield of 2,250 pounds; and as comp'ared with 1,000 pounds of fer- 

 tilizer, an increased yield of 835 pounds. 



(d) When 2,000 pounds of fertilizer were used, the increased 

 yield of beets varied from 1,648 pounds to 7,450 pounds and aver- 

 aged 5,680 pounds. The increased yield of beets was about 1,000 

 pounds more than when 500 pounds of fertilizer were used; but 



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