31 



JEFFERSON COUNTY, lj4 MILES EAST OF 



QUINTON. 



W. L. Peterson. 



Light gray loam, red clay subsoil. 



This land has been cultivated for 18 years. The preceding 

 crop was wheat. Some damage was done by the cotton cater- 

 pillar. There was a good stand. 



Complete fertilizers were the most profitable. The complete 

 fertilizer on Plot 10 affording a profit of $7.10 per acre, or 132 

 per cent on the investment. The average estimated increase 

 of seed cotton per acre was 167 pounds from cotton seed meal ; 

 53 pounds from acid phosphate ; and 45 pounds from kainit. 



Cotton seed meal was more effective than nitrate of soda, 

 and 100 pounds of kainit afforded a larger yield than did 200 

 pounds. 



Increase of seed cotton per acre when cotton seed meal was added: 



To unfertilized plot 80 lbs. 



To acid phosphate plot 216 lbs. 



To kainit plot 160 lbs. 



To acid phosphate and kainit plot 210 lbs. 



Average increase with cotton seed meal 167 lbs. 



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



To unfertilized plot —72 lbs. 



To co'ton seed meal plot 64 lbs. 



To kainit plot 134 lbs. 



To cotton seed meal and kainit plot 184 lbs. 



Average increase with acid phosphate 53 lbs. 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot —52 lbs. 



To cotton seed meal plot 28 lbs. 



To acid phosphate plot 154 lbs. 



To cotton seed meal and acid phosphate plot 148 lbs. 



.Average increase with kainit ..•••• 45 lbs. 



Increase from use of different quantities of kainit: 



From use of 200 pounds kainit 148 lbs. 



From use of 100 pounds kainit 246 Ibn. 



Increase from use of cotton seed meal 210 lbs. 



Increase from use of nitrate of soda — 02 lbs. 



Cotton seed meal better by 262 lbs. 



