9 



d5 



For yields of cotton seed see the table on page 48. . 



The following analysis shows that the one conspicuous 

 need of this fresh land was for phosphate. The indif- 

 ference of this particular field towards cotton seed meal 

 is due to the recent clearing and to the two preceding 

 crops of peas, both of which conditions imply the pres- 

 ence of considerable nitrogen in the soil. The soils of 

 this region after a few years cultivation usually respond 

 -profitable to both phosphate and cotton seed meal, and 

 some of them to kainit. A test made at Wilson on "new 

 ground'^ in 1898 by J. H. Wilcox, gave results similar 

 to those obtained in this experiment. 



Increase of seed cotton per acre when cotton seed 

 meal was added : 



To unfertilized plot 200 lbs. 



To acid phosphate plot — 112 lbs. 



To kainit plot 24 lbs. 



To acid phosphate and kainit plot .208 lbs. 



Average increase with cotton seed meal 108 lbs. 



Increase of seed cotton per acre when acid phosphate 

 was added : 



To unfertilized plot 632 lbs. 



To cotton seed meal plot 320 lbs. 



To kainit plot 328 lbs. 



To cotton seed meal and kainit plot 512 lbs. 



Average increase with acid phosphate 448 lbs. 



Increase of seed cotton per acre when kainit was 

 added : 



To unfertilized plot 8 lbs. 



To cotton seed meal plot — 168 lbs. 



To acid phosphate plot — 292 lbs. 



To cotton seed meal and acid phosphate plot. ... 24 lbs. 



Average decrease with kainit 107 lbs» 



