Xerult | Article about Xerult by The Free Dictionary
A suborder of the soil order Ultisol, formed in a xeric moisture regime; brownish or reddish soil with a low to moderate organic-carbon content.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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In the USDA Soil Taxonomy (Soil Survey Staff 2006), these soils would correspond to Alfisols (Xeralfs and to a lesser extent Aqualfs and Ustalfs) for the higher base status soils, and Ultisols (Ustults and to a lesser extent Aquults and Xerults
) for the more acidic, lower base status soils.
The dominant suborders of Ultisols are Aquults, Humults, Udults, Ustults, and Xerults
Red Brown Earths correspond approximately to Xeralfs or Xerults
, depending on base saturation status, according to Soil Taxonomy (Soil Survey Division Staff 1993).