5 i4 INVESTIGATION BY CULTURE EXPERIMENTS 



TABLE 109. EXPERIMENTS ON WOOSTER (Omo) SOIL 

 (a) STATEMENT SHOWING ACTUAL INCREASE AND ORDER OF EFFECTIVENESS 



(b) COMPARISON OF OHIO FIELD EXPERIMENTS WITH BUREAU OF SOILS, 



WATER CULTURES FOR DETERMINING NEEDED 



ELEMENTS OF PLANT FOOD 



Tables 108 and 109 show the results of such culture experiments 

 in direct comparison with the average results of nine years' field 

 experiments by the Ohio Agricultural Experiment Station on the 



