Tub Bulletin. 



25 



In table 3 are given, the results on part of this field. The others 

 are recorded in table fi. This table is discussed under the heading 

 of Commercial Fertilizers, since the treatment on this field was 

 l>reviously planned lo 1'uriiish information relative to the most profit- 

 able formula to use on this soil for corn. However, we are able to 

 draw some conclusion as to the needs of this soil as a type, and the 

 effects on it of the individual elements. The first three plats un- 

 fortunately are on land which is of a very different character than 

 the remainder of the field, and for this reason the results derived on 

 them arc of less value. They include considerable areas of a dark 

 phase of the Toxaway loam which is very unproductive. In fact, in 

 1910, the corn all died on plat 2, thovigh the greater part of it germi- 

 nated and made some growth. 



The same carriers of plant food were used as sources of nitrogen, 

 phosphoric acid and lime as previously stated, but the potash was 

 obtained from manure salt instead of sulphate of potash. The rate 

 of application was on the arbitrary basis of a 7-2^-l-| mixture. 

 Three hundred pounds of this was the amount applied to the normal 

 plat in 1908 and 400 pounds in 1910. This would give 21 pounds 

 of phosphoric acid, 7^ pounds of nitrogen and 4^ pounds of 

 potash per acre in 1908, and 28, 10 and 6 pounds, respectively, in 

 1910. 



