17 



complete fertilizers were those applied to plots 9 and 10 which 

 afforded a profit of $12.73 and $12.99, respectively, as compar- 

 ed with a profit of $8.94 for the complete fertilizer containing 

 nitrate of soda. 



The average estimated increase of seed cotton per acre at- 

 tributable to cotton seed meal was 185 pounds ; to acid phos- 

 phate 147 pounds ; and to kainit 273 pounds. 



Fertilizer experiment at Columbiana 



Increase of seed cotton per acre when cotton seed meal was added: 



To fertilized plot 224 lbs. 



To acid phosphate plot 252 lbs. 



To kainit plot 148 lbs. 



To acid phosphate and kainit plot 114 lbs. 



Average increase with cotton seed meal 185 lbs» 



