03 



Increase of seed cotton per acre when acid phosphate 

 was added: 



To unfertilized plot 192 lbs. 



'To cottonseed meal i)lot 322 " 



To kainit plot ! 151 " 



To cottonseed meal and kainit plot 197 " 



Average increase with acid piiosphate 216 " 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 197 lbs. 



To cottonseed meal plot 103 "" 



To acid phosphate plot 150 " 



To cottonseed meal and acid phoe. plot. ... 38 " 



Average increase with kainit 139 " 



The chief need of this soil was for acid phosphate. Kainit 

 in thiis unfavorable season was moderately etfective. The 

 cowpeas grown between the rows of corn on this field in 

 1890 apparently furnished enough nitrogen; at any rate, 

 cottonseed meal was not decidedly beneficial in 1897. 



The largest profit, |4.2G per acre, was obtained by the use 

 of a mixture of acid phosphate and kainit, this, with the 



peavines of the preceding year, forming practically a com- 

 plete fertilizer. 



Experiment Made i;v J. W. Tbrrv, Brewtox, Escambia 



COUXTT. 



Gray soil ; clay subsoil. 



Pine, the original growth, was removed twelve yeans ago. 

 The preceding crop was oats, followed by cowpeas. Corn 

 occupied the field in 1895, and sugar cane in 1894. 



" The very hot and dry weather after the rain in July caused 

 all the fertilized plots to shed bottom leaves. Plots 5, 0, 7, 

 9 and 10 never recovered from a storm in July." 



