United States Department of Agriculture
Natural Resources Conservation Service
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Ultisols

Profile photograph of an Ultisol  

The central concept of Ultisols is that of soils that have a horizon that contains an appreciable amount of translocated silicate clay (an argillic or kandic horizon) and few bases (base saturation less than 35 percent). Base saturation in most Ultisols decreases with depth.

Map



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