KXPJlltlMKNT NlAlU: I'.V \V. M. PUKIFOY, li .MILKS NOllTll- 

 KAST OF SNOW IIILL^ WILCOX COUNTY. 



n////r hdhf prairie; .mhsoil^ irhilc rotten limcstont'. 



This oxpcriiiu'iit was made in 1891) on land espe- 

 cially favorable to the development of black rust of cot- 

 ton. The land was not broken until May 25, when it 

 was bedded with a one-horse pfow. "Many stalks had 

 nothing on them on account of coming up too late. Ex- 

 treme drought ruined the experiment." 



The table on page 11 gives the yields and the sub- 

 joined analysis of results of Mr. Purifoy's tests, both in 

 1808 and 1809, shows the increase attributable to each 

 fertilizer, when used alone or in combinations under cot- 

 ton growing on poor white prairie soil. 



Increase of seed cotton i^er acre when cotton seed 

 meal Avas added : 



1898. vS99. 



To unfertilized plot 128 lbs. 144 lbs. 



To acid phosphate plot 27 lbs. IG lbs. 



To kainit plot 227 lbs. 144 lbs. 



To acid phosphate and kainit plot. 141 lbs, 128 lbs. 



Average increase with cotton seed 



meal.. .. : 131 lbs. 100 lbs. 



Increase of seed cotinn per acre Avhen acid phosphate 

 was added : 



To unfertilized plot 200 lbs. 208 lbs. 



To cotton seed meal plot 99 lbs. 48 lbs. 



To kainit plot 209 lbs. 240 lbs. 



To cotton seed meal ajid kainit plot . 123 lbs. 224 lbs. 



Average increase with acid phos- 

 phate 158 lbs. 180 s 



