A change in soil color from the
adjacent soils indicates a difference in the soil’s mineral
origin or in soil development such as:
-Dark color usually indicate high OM contents;
-White color are common are salts or carbonate deposits exist in
the soil.
-Reddish or yellowish, indicate a soil long periods of good aeration
or well drained soil.
-Bluish, grayish, and greenish subsoil (gleying), with or without
mottles (rust spot color), indicate longer periods each year of
Waterlogged conditions and inadequate aeration.