31 

 Lauderdale County_, 10 Miles West of Florence. 



W. A. Parish, 1905-6. (See Table, p. 30.) 



In 1905 stiff light gray soil with red sulsoil; in 1906 darker 



soil, ivith red clay suhsoil. 



Both fields had been cleared for 30 or 40 years. The orig- 

 inal forest trees are said to have been post oak, red oak, 

 black oak, and hickory. Every fertilizer considerably in- 

 creased the yield in both years. In both years the largest 

 increase, 857 pounds and 438 pounds of seed cotton respect- 

 ively, was afforded by plot 5, fertilized with a mixture of 

 cotton seed meal and phosphate. This represents a net 

 profit of 123.14 and. $9.73 per acre. In 1904 a test made 

 itv Mr. Parish on gray soil with reddish subsoil showed an 

 average increase attributable to cotton seed meal of 249 

 pounds of seed cotton per acre; an increase deu to acid 

 phosphate of 584 pounds; and an increase due to kainit 

 of 212 pounds of seed cotton. This indicated a need for the 

 complete fertilizer, while the later tests gave good results 

 without kainit. 



It seems that this soil needs chiefly phosphoric acid, but 

 that this should usually be supplemented by nitrogen. 

 The soil on which both Mr. Parish and Mr. Had- 

 dock made their experiments was that known locally as 

 "The Barrens." and described in soil survey reports as 

 "Clarksville Silt Loam." 



1904 1905 1906 



Average yield of seed cotton per acre, unfertilized. .452 340 168 

 Increase of seed cotton when cotton seed meal was added: 



To unfertilized plot 284 336 232 



To acid phosphate plot 269 465 246 



To kainit plot 237 298 —26 



To acid phosphate and kainit plot 208—131 91 



Average increase with cotton seed meal 249 242 138 



