93 



Increase in seed cotton per acre when kainit was added: 



To unf<^rtilized plot 29 lbs. 



To cottonseed meal plot 150 " 



To acid phoisphate plant — 45 " 



To cottonseed meal and acid phos. plot. ... 6 '' 



Average increase with kainit 36 " 



Cottonseed meal and acid phosphate were both fairly ef- 

 fective. 



The most profitable fertilizer w^a«s a complete fertilizer 

 containing 200 pounds per acre of cottonseed meal, 240 

 pounds of acid phosphate, and only 100 pounds of kainit. 

 A close .second to this in point of profit was a mixture of 

 cotto'nseed meal and kainit. 



• Of the three separate fertilizer materials kainit was least 

 effective and practically worthless except when combined 

 with cottonseed meal. 



Experiment Madk by T. J. Tuomasox, Kayi.ok, Randolph 



County. 



Gray soil b or Q inches deep ; ijelloio subsoil. 



This field was supposed to have been cleared for about 

 fifty years. The preceding crop was cotton. Nothing is 

 said about fertilizers used in previous years, but the good 

 yields obtained on the unfertilized plots — 888 and 1000 

 pounds of seed cotton, per acre — suggest that the land had 

 been highly fertilized in recent years. Rust did not do 

 any special damage. 



