PLATE 14 
A. —Pot tests of the soil from the field shown in Plate 4, B, in Shelby County, Ind. 
Ground limestone at the rate of 3 tons, acid phosphate at the rate of 500 pounds, lime¬ 
stone and acid phosphate at rates of 3 tons and 500 pounds, respectively, and aluminum 
chlorid at the rate of 500 pounds per acre were the soil treatments. Note the beneficial 
effects of limestone and of acid phosphate. Fusarium moniliforme was isolated from 
lesions on the roots of plants in each of the pots. 
B. —Soil from a field in Hancock County in which the com was badly rootrotted 
in 1920. Note that limestone had no effect while acid phosphate was beneficial. 
These plants also showed rot lesions on the roots. The aluminum treatments cause 
the plants to become very susceptible to the rots. 
