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SEP-16-2003 11:15 FROM: <br />UtYlcial genes 1)escnprion - UULNAtCb genes <br />Clay content: 20 to 35 percent <br />Sand content: 35 to 50 percent <br />Rock fragment content: 15 to 35 percent <br />Jn some pedons an A horizon is present. <br />The E horizon: <br />Hue: 7.SYR to 2.SY <br />Value: 5 to 7 dry, 3 to 5 moist <br />Chroma: 2 through 4. <br />Rock fragment content: 0 to 1S percent <br />Reaction: slightly acid or neutral <br />The Bt horizons: <br />Hue: 7.SYR to 2.SY <br />Value: 5 or 6 dry, 4 or S moist <br />Chroma: 4 through 6 <br />Texture: gravelly clay loam, gravelly sandy clay loam <br />Clay content: 20 to 35 percent. <br />Sand content: 35 to 50 percent <br />Rock fragment content: 1 S to 35 percent <br />Reaction: moderately acid to neutral <br />T0: 13038326106 <br />P.7'13 <br />rage c u1 ~ <br />COMPETING SERIES: These are the nl we(CO), Joebas(CO), and ita(NM) series. <br />Benlowe and Lajuita soils are dry in the moisture control section at sometime during ilia and June. <br />Joebas soils have hues SYR or redder. <br />GEOGRAPHIC SETTING: <br />Parent material: Colluvium and residuum from sandstone. <br />Landform: Hills, ridges, and mountain slopes. <br />Slopes range from 5 to 50 percent. <br />The mean annual air temperature ranges from 42 to 46 degrees F. <br />The mean annual precipitation ranges from 17 to 23 inches with peak periods in spring and summer <br />months. <br />Elevation ranges from 6,800 to 9,000 feet. <br />The frost-free period is 80 to 100 days. <br />GEOGRAPffiCALLY ASSOCIATED SOILS: These are the ~llens Park, Trujillo, and Wahatova <br />soils. Allens Park soils have bedrock between 20 to 40 inches. and are on summits and footslopes. <br />Trujillo soils are very deep, have a mollic epipedon, and are on footslopes and toessopes. <br />Wahatoya soils have greater than 35 percent rock fragments in the control section and are on backslopes. <br />DRAINAGE AND PERMEABILITY: Well drained; rapid to very rapid runoff; moderately slow <br />permeability. <br />USE AND VEGETATION: These soils are used for livestock grazing, Woodland, recreation, and <br />wildlife habitat. Principal native vegetation is ponderosa pine with an understory of Arizona fescue, <br />Mountain muhly, Parry oatgrass, pine dropseed, and mountain brome. <br />DISTRIBUTION AND EXTENT: Southeastern Colorado. The series is of moderate extent. <br />http://ortho.ftw.nres.usda,gov/osd/dadG/GULNARE.html 09/10/2003 <br />