Roots are abundant. A few soils with moderately fine texture and granular subsoils, are also moderately permeable. For contest, the subsoil texture sample in the box will be used to determine the permeability. Soils that have moderately fine-textured subsoils with angular and subangular blocky structure are slowly permeable. The subsoils are firm when moist and hard when dry.
Roots are common.
Length differences of vertical and horizontal cracks are negligible. Soil peds often have thin, discontinuous, clay films on surfaces and tend to break more easily along the vertical axis than in the very slowly permeable soils. Soils frequently have thick surface and transitional horizons from the surface to the most clayey horizon in the profile. Soils that have dense, fine-textured subsoils and claypan soils are very slowly permeable. Their structure is coarse, angular blocky or massive with very few visible pores.