50 



plot G, fertilized with meal and kainit, gave the largest yield 

 and the most profit in 1905, in which year every fertilizer 

 was useful when applied alone or by twos. 



In 1906 plot 9, receiving 610 pounds of complete fertilizer, 

 afforded the largest yield and the greatest net profit. The 

 latter test agrees with Mr. Jackson's in showing the need 

 of a complete fertilizer on the coarse gray sandy soils of 

 this i-egion. 



1905 1906 



Lbs. Lbs. 



Average yield of seed cotton per acre, unfertilized 296 176 



To unfertilized plot 1.56 96 



To acid phosphate plot 108 260 



To kainit plot 190 2 



To acid phosphate and kainit plot 7 201 



Average increase tvith cotton seed meal 115 140 



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



To unfertilized plot 152 120 



To cotton seed meal plot 104 287 



To kainit plot 95 150 



To cotton seed meal and kainit plot — 88 247 



Average increase with acid phosphate 66 201 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 202 123 



To cotton seed meal plot 236 129 



To acid phosphate plot 145 153 



To cotton seed meal and acid phosphate plot 44 90 



Average increase with kainit 157 124 



Tallapoosa County. 8 ^Miles West of Xotasulga. 



M. E. Parker, 1905-6. (See Table, p. 61.) 



Gra(/ sandy upland; yelloicish subsoil. 



This field was on representative long-leaf pine land, and 

 had been in cultivation about 20 years. The five crops pre- 



