G4 



Macon County^ 6 Miles West of Notasulga. 

 ^. C. Jackson, 1905. (See Table, p. Gl.) 



Gray sandy pine iuoods soil with yellowish suhsoil. 



The original growth was loug-leaf pine. The field had 

 been in cultivation for many years. A mixture of acid phos- 

 phate and cotton seed meal (plot 5) was sufficient to give 

 the largest yield and greatest profits. 



Mr. Jackson noted that on plots receiving the complete 

 fertilizer there were some spots where the plants died, pro- 

 bably from cotton wilt. This may explain why the complete 

 fertilizer did not give a better yield. 



Lbs. 



Average yield of seed cotton per acre, tinfertUized 2SS 



Increase of seed cotton when cotton seed meal was a^Vled: 



To unfertilized plot 72 



To acid phosphate plot 174 



To kainit plot 158 



To acid phosphate and kainit plot 204 



Average increase with cotton seed meal 152 



Increase of seed cotton per acre when acid phosphate was added: 



To unfertilized plot 88 



To cotton seed meal plot 190 



To kainit plot — 15 



To cotton seed meal and kainit plot 31 



Average increase with acid phosphate 73 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 75 



To cotton seed meal plot 161 



To acid phosphate plot — 28 



To cotton seed meal and acid phosphate plot 2 



Average increase with kainit 52 



