Undisturbed areas have A horizons 2 to 4 inches thick with values of 3 or 4, and chromas of 1 or 2. Reaction is very strongly acid or strongly acid in unlimed areas, and ranges to neutral in limed areas. It averages 10 to 18 percent clay and 15 to 20 percent sand. Reaction is very strongly acid or strongly acid. Texture is silt loam or silty clay loam and averages 24 to 30 percent clay and 10 to 15 percent sand.
Reaction is extremely acid or very strongly acid.
Reaction ranges from extremely acid to strongly acid. Reaction ranges from strongly acid to neutral. There are no competing series. Avonburg soils are on summits of loess-covered till plains. Slopes range from 0 to 6 percent.