Soil System Sciences

red soils

Soil color never lies

Often, soil color is described using general terms such as “brown”, “red”, “dark”, etc. When I talk about this issue for the first time with my students of Soil Science, I use to ask them how to describe the color of a soil sample. Normally, in a few seconds, I get a list of color names ranging from dark brown to bright red, including “chocolate”, “coffee” and “ ...[Read More]

Soils going red: Terra rossa

The term “terra rossa” comes from the Italian for “red soil” or “red earth”. Although terra rossa exists in other places in the world, these soils are common in areas with Mediterranean-type climates: alternation of a rainy and cool-to warm-dry season. The terra rossa soil is heavy and clay-rich (silty-clay to clayey) soil, strongly reddish, developed on limesto ...[Read More]