These soils differ from those of other s in that they naturally are dominated by glass and poorly crystalline colloidal materials such as allophane , imogolite , and ferrihydrite ( HYPERLINK "http /soils .ag .uidaho .edu /soils /andicprop .jpg " andic properties . As a effect , Andisols have several distinctive chemical and physical properties that comprise high water-holding capacity and the capacity to HYPERLINK "http /soils .ag .uidaho .edu /soils /P-retent .jpg 'fix (and make unavailable to plants ) large quantities of HYPERLINK "http /soils .ag...











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