26 



The Bulletin. 



Tt is evident that there were larger increases wherever phosphoric 

 acid was used. In the lower part of the tahle the amount of increase 

 was obtained by deducting the yield on plat 2, which received nitrogen 

 and potash, from that on plat 5 which received a complete fertilizer. 

 Thus, on account of the soil of plat 2 being of different character the 

 application of phosphoric acid alone would very probably not have 

 shown nearly so great an increase as this table indicates. Likewise, 

 the yield of 12.2 bushels per acre, which is the indicated increase 

 from potash, is too great since it represents the difference between 

 the yield on plat 1 and on plat 5. The same discrepancy arises in 

 the increase of 5.8 bushels due to nitrogen. However, these figures 

 represent the relative importance of the three elements when applied 

 to this dark pha=e of Toxaway loam. 



Lime was applied alone and in combination with nitrogen, phos- 

 phoric acid and potash. In both cases it gave material increases in 

 yield as shouoi by the results on plats 18 and 19. It is of interest to 

 note in this connection that the yield on plat 18 which received lime 

 alone dropped from 33.1 bushels in 1908 to 13.7 bushels in 1910. 

 This decrease is not proportionately as great as in the case of the 

 unfertilized plats, but it is much more so than on any of the plats 

 receiving phosphoric acid. It is very probable that this temporary 

 beneficial effect of lime alone in 1908 was due to the liberation of the 

 plant food supply in the soil. 



TABLE 4. ONE YEAR'S RESULTS WITH OATS, BUNCOMBE FARM. 



Table 4 gives the results obtained by Mr. Collett with oats on 

 Toxaway loam. This experiment was put out on temporary plats 

 and not continued. The application of the various elements was at 

 the rate of 400 pounds of an 8-2-2 fertilizer. Results of tests of 

 single elements applied alone, show differences in their relative values 



