Lbs. 



Average yield of seed cotton per acre, unfertilized 220 



Increase of seed cotton per acre when cotton seed meal was ad- 

 ded: 



To unfertilized plot 104 



To acid phosphate plot 168 



To kainit plot 224 



To acid phosphate and kainit p'.ot 136 



Average increase tvith cotton seed meal 158 



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



To unfertilized plot 72 



To cotton seed meal plot 136 



To kainit plot 56 



To cotton seed meal and kainit plot — 32 



Average increase with acid phosphate 58 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 24 



To cotton seed meal plot 144 



To acid phosphate plot 8 



Tf cotton seed meal and acid phosphate plot — 24 



Average increase with kainit 38 



Geneva County. 4 1-2 Miles North of Gbnev^a 

 M. r. Metcalf, 1905. 



Gray sandy pine land icith stiffer red subsoil eight inches 



from surface. 



The land had been in cultivation six years. Both cotton 

 seed meal and acid phosphate were very effective, and a 

 mixture of the two was the most profitable fertilizer. This 

 vear kainit was in most combinations useless. 



In experiments on cotton made by Mr, Metcalf on similar 

 land in preceding years the results indicated a need for 

 phosphate; and in two of his experiments kainit was also 

 very effective. Nitrogen was also needed except when sup- 

 plied by a preceding crop of peanuts. 



