41 * 



:\IARSHALL COUNTY, ly. MILES WEST OF BOAZ. 



L. O. Cox. 



Gray loam, ycllozi' clay Subsoil. 



This land lias only been cleared 8 years. The preceding crop 

 \vas wheat. There was no damage reported from rust or in- 

 sect attacks. 



The complete fertilizer's were the most profitable, Plot lO" 

 affording a profit of $10.24, or 190 per cent on the investment 

 in fertilizers. Of the fertilizers applied singly acid phosphate 

 afforded the largest profit, $4.98 per cent, or 231 per cent on 

 the investment. The average estimated increase of seed cotton 

 per acre was 184 pounds for cotton seed meal ; 205 pounds for 

 acid phosphate, and 7 pounds for kainit. From the results ob- 

 tained from kainit there is apparently a sufficient amount of 

 potash in the soil. Cotton seed meal was more profitable than 

 nitrate of soda. 



Increase of seed co'ton per acre when cotton seed meal was added: 



To unfertilized plot 240 lbs. 



To acid phosphate plot .- . . 244 lbs. 



To kainit plot 164 lbs. 



To acid phosphate and kainit plot 88 lbs. 



Average increase with cotton seed meal 184 lbs. 



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



To unfertilized plot 208 lbs. 



To cotton seed meal plot 212 lbs. 



To kainit plot 238 lbs. 



To cotton seed meal and kaini' plot 162 lbs. 



Average increase with acid phosphate 205 lbs. 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 50 Ibs._ 



To cotton seed meal plot — 26 lbs. 



To acid phosphate plot 80 Ibs- 



To cotton seed meal and acid phosphate plot — 76 lbs. 



Average increase with kainit 7 lbs.. 



Increase from use of cotton seed meal 88 lbs. 



Increase from use of nitrate of soda 32 lbs. 



Cotton seed meal better by 56 lbs.. 



