IS 



taininu kainil (Plot 11 1 allonlin^an iiicrca.sc <;i'(*akT by 

 23(1 pouiuLs of seed eoKon \>ev acre llian llie increiiieiit 

 where only jdiospliatt,' and meal were \is(^{\ iou^edier. 



(riot 5.) 



Tnei-ea>>e ol" seed cotton i)er acre wlien cotton seed 

 meal was added : 



To nnlVi'lilizcd j.lot 21G lbs. 



To acid pliosi)liate plot 350 lbs. 



To kainit plot 250 lbs. 



To acid jdiosphale and kainit plot 520 lbs. 



Average increase with cotton seed meal 340 lbs. 



Jncri*ase ol' seed col ion |k'1' aci'e when acid ])iiosphate 

 was added : 



To unfertilized plot 152 lbs. 



To cotton seed meal i)lot 202 lbs. 



To kainit plot 1 Si) Ibs^ 



To cotton seed meal and kainit plot 450 lbs. 



Average increase with acid phosphate 273 lbs. 



Increase of seed cotton per acre when kainit- was 

 added : 



To unfertilized plot 2(> lbs. 



To cotton seed meal plot bJ) lbs. 



To acid phosphate plot (13 lbs. 



To cotton seed meal and acid ]>hos]>liaic 23(> lbs. 



Average increase with kainit 99 lbs. 



3Ir. Daftin also conducted similar tests in 1S07 and 

 1808 on red sand}' npland, with red cla}^ subsoil, t^\'o and 

 one-half miles east of Tuscaloosa. In both years jihos- 

 phatc was by far the chief need of that soil, but both cot 

 ton seed meal and kairtit afforded considerable increase, 

 so ihat the i^reatest profit was obtained by the use of a 

 complete fci'filizer containini; all three of these ma- 

 terials. 



