63 



Tallapoosa County, 6 Miles West of Notasulga. 

 E. B. Jackson, 1907-8. ( See Table, p. 61.) 



Gray sandy upland; yelloivish suhsoil. 



This experiment was made on typical long-leaf pine land, 

 which had been in cultivation for many years. The stands 

 of cotton were good and uniform. There are no records to 

 the presence or absence of cotton rust. 



In both years a complete fertilizer was most effective and 

 most ])rofitable. However in a complete fertilizer. 100 

 j)ounds of kainit per acre (plot 10) was more advantageous 

 than double this amount, (plot 9.) 



1907 1908 

 Lbs. Lbs. 



Average yield of seed cotton per acre, nnfert'lized 188 405 



Increase of seed cotton when cotton seed m;al was added: 



To unfertilized plot 80 280 



To acid phosphate plot 42 — 16 



To kainit plot 99 124 



To acid phosphate and kainit plot 98 132 



Average increase ivith cotton seed meal 80 130 



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



To unfertilized plot ,64 100 



To cotton seed meal plot 26 — 196 



To kainit plot 93 26 



To cotton seed meal and kainit plot 92 34 



Average increase with acid phosphate 69 — 9 



Increase of seed cotton per acre when kainit was added : 



To unfertilized plot 25 112 



To cotton seed meal plot 44 — 44 



To acid phosphate plot 54 38 



To cotton seed meal and acid phosphate plot 110 186 



Average increase with kainit 58 



73 



