Soils included can be designated with the FCC modifiers x (volcanic materials) or v (vertic soil properties), and we also added calcareous soils (modifier b) and waterlogged soils (g, g +) to this group. In addition, this group contains soils not characterized by any of the FCC condition modifiers. Soils in this group are much less weathered, have considerably higher natural soil fertility than poor and very poor soils, and soil constraints are minor or absent.