29 



Franklin County, 5 Miles North-west of Russellville. 

 T. J. Willis. 1905-6, (See Table, p. 30.) 



Dark gray sandy soil, icitli light colored clay snhsoil. 



These tests were made on a hilltop which had been in cul- 

 tivation about 10 years. The forest growth was hardwoods. 



It is evident that this soil responded freely to every fer- 

 tilizer, whether applied singly, by twos, or all three together. 



In both years a complete fertilizer (plots 9 or 10) was the 

 most profitable application, closely followed in yield and 

 profit by a mixture of acid phosphate and cotton seed meal. 

 On plot 9 the complete fertilizer increased the yield by 1000 

 and by 792 pounds of seed cotton. After deducting the cost 

 of the fertilizer (p 29) this left profits of |26.32 and |19.G6 

 per acre. Phosphate was most effective, cotton seed meal 

 next, and kainit lenst. luit still useful. 



1905 1906 



Lbs. Lbs 



Average yield of seed cotton, unfertilized 352 376 



Increase of seed cotton when cotton seed meal was added : 



To unfertilized plot 192 24 



To acid phosphate plot 172 120 



To kainit plot 204 144 



To acid phosphate and kainit plot 167 176 



Average increase with cotton seed meaJ 184 116 



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



To unfertilized plot 664 456 



To cotton seed meal plot 644 552 



To kainit plot 739 600 



To cotton seed meal and kainit plot 702 632 



Average increase with acid phosphate 687 560 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 94 16 



To cotton seed meal plot 106 136 



To acid phosphate plot 169 160 



To cotton seed meal and acid phosphate plot 164 216 



Average increase with kainit 133 132 



