It is silty clay loam or silty clay. Reaction is slightly acid to strongly acid. The 2B horizon has hue of 7.5YR or 5YR, value of 4 or 5 and chroma of 4 to 8. Some pedons contain a few gravel size rock fragments. Textures are silty clay or silty clay loam.
Reaction is slightly acid to strongly acid.
These are the Gymer , Oska , Otley , Sharpsburg , and Wenona series in the same family and the Dodgeville , Edmumd, Labette , Ladoga , Marshall , and Tully series. All of these series except Tully have mollic epipedons less than 20 inches thick. Tully soils are dry for a longer period and are less acid. The Polo soils are on gently sloping ridgetops and upper side slopes. They formed in loess and residuum from limestone or shale.