They form a bio-sequence with Elkhart soils. Tallula soils are typically in positions downslope from Elkhart soils. They contain less clay in the subsoil and do not have an argillic horizon. These soils have an apparent seasonal high water table at a depth of 4 to 6 feet at some time between February and April in most years. The potential for surface water runoff is low on the lesser slopes and medium on the steeper slopes.
Permeability is moderate.
Most areas of Elkhart soils are cultivated. Corn, soybeans, small grain, and meadow are the principal crops. Some areas are used for pasture. Native vegetation is prairie grasses. Rock Island County, Illinois, 1972.