Department op Agriculture 



37 



B.G. --Surface 

 kept free of 

 vegetation 

 N.F. Under 

 non-fertiliiec 



si and 

 cotton 



H.F. Under 

 heavily fer- 

 tilized Sea 

 'sland cotton 



. 5 

 i -S4 



o (d2 

 £5 



•Ji^.^- 



Fig. 13. Percentage of soil moisture during the growing season at one, two, 

 and three foot depths under bare ground, non-fertilized Sea Island 

 cotton, and heavily fertilized Sea Island cotton on various dates, in 

 the WPA fertilizer test, Madison county, 193 6. 



