50 



reliable a fertilizer experiment should be repeated for sev- 

 eral yeans on the isame kind of soil. 

 GROUP I. PHOSPHOEIC ACID MOST EFFECTIVE. 



Experiment Made by E. J. Dafpin, '2,^ Miles East of Tusca- 

 loosa, Tuscaloosa County. 



The field had been cleared probably sixty or more years 

 before. The experimenter does not describe the isoil, but 

 gives the following list of the trees constituting the origi- 

 nal forest growth: Oak, pine, hickory, gum, beech, mul- 

 berry, sassafras, persimmon, cherry, poplar and ash. 



The preceding crop wais oabs, which was preceded by two 

 crops of corn. 



Rust was present, and there was no difference in this re- 

 spect between the different plots. The season was very dry, 

 and the crop was made by August 5. The stand was almost 

 perfect. ''There were no outside rows." 



A spot extending across plots 1, 2 3 and 4 was struck by 

 lightning, but apparently the effect was not very great, for 

 the injured plot that was not fertilized lacked only a few 

 pounds of equaling the yield on the uninjured plot that was 

 not fertilized. 



