A non-scientific term used to describe organically enriched surface soil layers.; The upper part of a soil, with the lower limit set at 30 cm or shallower. The soil depth may be limited by a root growth inhibiting layer which can be hard rock, a pedogenetically indurated layer, a chemically unfavourable layer, or strongly contrasting layer.
GEO-1-6
A non-scientific term used to describe organically enriched surface soil layers.; The upper part of a soil, with the lower limit set at 30 cm or shallower. The soil depth may be limited by a root growth inhibiting layer which can be hard rock, a pedogenetically indurated layer, a chemically unfavourable layer, or strongly contrasting layer.