30 



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



To unfertilized plot 104 lbs. 



To acid phosphate plot 168 lbs. 



To kainit plot 160 lbs. 



To acid phosphate and kainit plot — 46 lbs. 



Average increase with cotton seed meal 97 lbs. 



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



To unfertilized plot 152 lbs. 



To cotton seed meal plot 216 lbs. 



To kainit plot 290 lbs. 



To cotton seed meal and kainit plot 84 lbs. 



Average increase with acid phosphate 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 



To cotton seed meal plot 



To acid phosphate plot 



To cotton seed meal and acid phosphate plot 



186 lbs. 



Average increase with kainit 77 lbs. 



Fertilizer experiments in Jefferson County 



o 

 Z 



0. 



10 Miles North of 

 Birmingham 



QUINTON 



o a. 

 S 1- 

 < S 



KIND 



[SJ 



2 u 



1 



2 



?, 

 4 



^) 

 ^] 



7 



«) 



9* 



10 



11 



12 



Lbs. 

 200 

 240 

 000 

 200 

 200 

 240 

 200 

 200 

 00 » 

 240 

 200 

 200 

 240 

 200 

 200 

 240 

 100 

 000 

 240 

 100 

 100 



Cotton seed meal _ . 



Acid phosphate 



No fertilizer 



Kainit 



Cotton seed meal / 

 Acid phosphate. _ ) 

 Cotton seed meal I 



Kainit ) 



No fertilizer 



Acid phosphate. . 



Kainit 



Cotton seed meal 

 Acid phosphate. . 



Kainit 



Cotton seed meal 

 Acid phosphate . 



Kainit 



No fertilizer 



Acid phosphate., j 



Kainit ,■ 



Nitrate of soda . ) 



$ 0.33 

 3.18 



0^i4 



5.56 



2.26 



8.74 

 3.26 



3.52 



-10.00 



