31 



acid phosphate, which gave an average increase of 202 

 pounds of seed cotton per acre. Cotton seed meal was 

 added to the phosphate with profit, ^but kainit was not 

 needed. 



. The red clay soils of the Metamorphic Region in this 

 part of the State seem to contain sufficient potash for 

 the ordinary needs of the cotton crop, though when black 

 rust is prevalent kainit is beneficial even here. 



Statements of the average increase in yield for the 

 three years follows : 



Increase of seed cotton per acre when cotton seed meal 

 was added : 



To unfertilized plot 109 lbs. 



To acid phosphate plot 156 lbs. 



To kainit plot 161 lbs. 



To acid phosphate and kainit plot 128 lbs. 



Average Increase with cotton seed meal 139 lbs. 



Increase of seed cotton per acre when acid phosphate 

 was added : 



T-o unfertilized plot 192 lbs. 



To cotton seed meal plot 239 lbs. 



To kainit plot 217 lbs. 



To cotton seed meal and kainit plot 189 lbs. 



Average increase with acid phosphate 202 lbs. 



Increase of seed cotton per acre when kainit was 

 added : 



To unfertilized plot —8 lbs. 



To cotton seed meal plot 43 lbs. 



To acid phosphate plot 15 lbs. 



To cotton seed meal and acid phosphate plot. . . . — 9 lbs. 



Average increase with kainit 10 lbs. 



