New York Agricultural Experiment Station. 



33 



No. of 

 plat. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



KIND OF fertilizer USED. 



None 



Frederick Lndlaui 



Frederick Liidlam 



Frederick Ludlam 



Frederick Ludlam 



Frederick Ludlam 



Frederick Lndlani 



Ellsworth Tutliill & Co 

 Ellsworth Tuthill & Go 



Lister Bros 



Lister Bros 



Forrester 



Forrester 



Hallock & Dnryee 



Hallock & Duryee 



Acme Fertilizer Co 



Acme Fertilizer Co 



Bradley 



Bradley 



Btiwker 



Bowker 



E. Fnmk Coe 



E. Frank Coe 



Moller & Co 



Moller& Co 



None 



Pounds of 

 marketable 



potatoes f(ir 

 100 pounds 



of uiisorted 

 potatoes. 



Pounds of 



culls for 



100 pounds 



of unsorted 



potatoes. 



83.8 

 88.4 

 91.0 

 91.6 

 91.0 

 91.6- 

 92.3 

 fc8.9 

 92.6 

 89.2 

 92.6 

 92.0 

 92.3 

 91.5 

 90.5 

 90.6 

 92.0 

 90.5 

 91.7 

 89.5 

 91.9 

 91.5 

 92.0 

 93.0 

 91.5 

 89.9 



16.2 



11.6 

 9.0 

 8.4 

 9.0 

 8.4 

 7.7 



11.1 

 7.4 



10.8 

 7.4 

 8.0 

 7.7 

 8.5 

 9.5 

 9-4 

 8.0 

 9.5 

 8.3 



10.5 

 8.1 

 8 5 

 8.0 

 7.0 

 8.5 



10.1 



The data embodied in the foregoing table appear to justify the 

 following statement of results : 



1. In every instance the use of a fertilizer increased the yield 

 of potatoes. This increase varied from 5.4 to over 81 bushels per acre. 



2. The use of 2,000 pounds of fertilizer an acre produced a 

 larger crop in some instances and a smaller one in others than did 

 the use of 1,000 pounds an acre. The largest increase of yield in 

 any one case was 33 bushels more (plot 23) by the use of 2,000 

 pounds than by the use of 1,000 pounds. In one case the larger 

 application gave 35 bushels less (plot 13). It was noticed that on 

 the plots where the larger amounts of fertilizer were used, the 

 potatoes came up unevenly and in some cases not at all. This was' 

 undoubtedly due to the fact that the seed-potatoes were injured by 

 contact with the fertilizer. 



3. The increased application of fertilizer generally produced a 

 larger proportion of marketable potatoes. The proportion of 

 marketable potatoes vai'ied from 83.5 to 93 per cent, of the entire- 



3 



