71 



Increase of iseed cotton per acre when acid phoisphate 

 was added: 



To unfertilized plot 144 lbs. 



To cotto-nseed meal plot 59 " 



To kainit plot —4 " 



To cottoaseed meal and kainit plot 123 " 



Average increase with acid phospliate 81 " 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot . 2t)4 lbs. 



To cottonseed meal plot 45 ■' 



To acid phosphate plot 146 " 



To cottonseed meal an.d acid phosJ. plot. . . .100 



Ave 'age increase with kainit 159 " 



The results for 1897 show that the soil needed kainit 

 chiefly as a check on rust. 



The largest profit was obtained where kaiuit alone was 

 used, a mixture of kainit and acid prospha-te standing sec- 

 ond in this respect. In a complete fertilizer 100 pounds of 

 kainit afforded nearly as large a yield and a slightly greater 

 profit than double that quantity. 



Exp.EuiMENT Made by C. D. IIoun, Coatopa, Sumtek CorNTv. 



Yellowis/i, sancli/ soil^ Kith red subsoil at a depth q/"3 inches. 



This field had bee-n in cultivation for about forty years, 

 almost continually in cotton, except one year, when corn 

 and cowpeas were grown, and in 1896, when cowpeas and 

 sweet potatoes both occupied portions of the held. The 

 original growth was red oak and hickory, with occasionally 

 a post oak. 



On August 10th plants on all plots appeared to have died 

 as the result of rust; but new leaves developed on every 

 plot receiving kainit. (Plots 4, 6, 7, 9 and 10.) 



The table gives yields based only on the September and 



