azonal soil(redirected from 1938 USDA soil taxonomy)
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azonal soil[′ā‚zōn·əl ′sȯil]
Any group of soils without well-developed profile characteristics, owing to their youth, conditions of parent material, or relief that prevents development of normal soil-profile characteristics. Also known as immature soil.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.