These are the Armo , Campus , Eltree , and Harney soils. Armo, Campus, and Eltree soils are on lower positions in the landscapes. Harney soils commonly are on slightly higher positions. Armo and Eltree are less clayey than Carlson soils and lack an argillic horizon. Runoff is slow or medium.
Permeability is moderately slow.
Most areas of Carlson soils are cultivated. Winter wheat and grain sorghum are the principal crops. Some of the more sloping areas are in native range. Native vegetation is tall and mid grasses. The series is of moderate extent.