By Bruce Spangenberg Soils are the foundation of gardens and landscapes, featuring characteristics that vary among locations ...

A grey or light-coloured 'E' horizon is the result of severe leaching, or eluviation, which washes out everything but quartz grains. Eluviation is the removal of soil, clay, silt or fine organic ...

The absence of a surplus results in incomplete leaching of the soil profile and the accumulation of semi soluble salts (white coatings), as symbolized by the Bk horizon (Figure 9a). This ...