40 



Increase of seed cotton per acre when cotton seed meal was 

 added: 



To unfertilized plot 144 lbs. 



To acid phosphate plot 1G5 lbs. 



To kainit plot 185 lbs. 



To acid phosphate and kainit plot G9 lbs. 



Average increase with cotton seed meal 181 lbs. 



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



To unfertilized plot 80 lbs. 



To cotton seed meal plot 101 lbs. 



To kainit plot 204 lbs. 



To cotton seed meal and kainit plot 88 lbs. 



Average increase with acid phosphate 118 lbs. 



increase of seed cotton per acre when kainit was added: 



To unfertilized plot 87 lbs. 



To cotton seed meal plot 121 lbs. 



To acid phosphate plot 211 lbs. 



To cotton seed meal and acid phosphate plot ..115 lbs. 



Average increase with kainit 133 lbs. 



t^xi'EUiMENT Made by I). W. Davis, IV-.' Miles Northeast of 

 GouDo^ Pickens County^ in 1902. 



(Snuff colored, sandy clay loam iiith dark reddish clay 



suhsoil. 



This iijilaiid field had been in cultivation for many veais, 

 the tAvo preceding crops being corn with a scant growth of 

 •cowpeas between the rows. The original growth was lel 

 •oak, black jack oak, hickory and pine. The stand was uni- 

 form. For yield and increase see table on page 39. 



A complete fertilizer gave the largest yield and a net 

 profit on plot 9 of |3.90 ])er acre. While all three fertilizers 

 were beneficial, the chief need was for phosphate. Preeed- 

 sng crops of cowpeas obscured the results from cotton seed 



