LOCATION YARTS UT+CO WYEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, calcareous, mesic Ustic Torriorthents
TYPICAL PEDON: Yarts fine sandy loam on rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 3 inches; yellowish red (5YR 5/6) fine sandy loam, reddish brown (5YR 4/4) moist; weak thick platy structure; loose, very friable, slightly sticky and slightly plastic; few medium and fine roots; strongly effervescent; disseminated carbonates; moderately alkaline (pH 8.0); clear smooth boundary. (3 to 8 inches thick)
C1--3 to 10 inches; yellowish red (5YR 5/6) fine sandy loam, reddish brown (5YR 4/4) moist; weak medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; few fine and very fine roots; few fine tubular pores; strongly effervescent; disseminated carbonates; moderately alkaline (pH 8.2); gradual wavy boundary. (7 to 50 inches thick)
C2--10 to 60 inches; reddish brown (5YR 5/4) fine sandy loam, reddish brown (5YR 4/4) moist; massive; soft, very friable, slightly sticky and slightly plastic; few very fine roots; strongly effervescent; disseminated carbonates; moderately alkaline (pH 8.2).
TYPE LOCATION: Wayne County, Utah; Robbers Roost Flats north of Eckers Cabin, northwest 1/4 of sec. 31, T. 28 S., R. 15 E.
RANGE IN CHARACTERISTICS:
Soil moisture regime - aridic bordering on ustic
Mean annual soil temperature - 48 to 54 degrees
Particle-size control section: 5 to 18 percent clay (average)
A horizon:
Hue: 2.5YR to 10YR
Value: 4 to 6 (3 to 6 moist)
Chroma: 3 to 8
Rock fragments: 0 to 15 percent
Calcium carbonate equivalent: 1 to 10 percent
Reaction: slightly alkaline to strongly alkaline
C horizon:
Hue: 2.5YR to 7.5YR
Value: 4 to 8 (3 to 7 moist)
Chroma: 3 to 8
Texture: fine sandy loam, sandy loam, loamy sand, or loam
Rock fragments: 0 to 15 percent
Calcium carbonate equivalent: 1 to 10 percent
Reaction: slightly alkaline to strongly alkaline
COMPETING SERIES: These are the Cliff, Councelor, Henrieville, Keeline, Nelman, Nelson, Oterodry, Shedado, Turnercrest, Uendal, and Zia series. A potential competitor that does not yet have CEA class assigned is the Pedrick series. Cliff soils have hue of 10YR or 2.5Y. Councelor, Oterodry, and Zia soils have visible secondary calcium carbonates above 40 inches. Henrieville, Keeline, Pedrick, and Turnercrest soils have hues yellower than 7.5YR. Nelman, Nelson, Shedado and Uendal soils have a lithic or paralithic contact at depths of 20 to 40 inches.
GEOGRAPHIC SETTING:
Parent material: eolian material and alluvium derived from sandstone, quartzite, and shale
Landform: structural benches, terraces, hills, and alluvial flats, and fans
Slopes: 0 to 10 percent
Elevation: 4,900 to 7,000 feet
Mean annual temperature: 44 to 52 degrees F
Mean annual precipitation: 10 to 13 inches
Frost-free period: 110 to 160 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Begay, Mellenthin, Mespun, Rizno and the competing Shedado soils. Begay soils have a cambic horizon. Mespun soils have a sandy particle-size control section. Mellenthin and Rizno soils have a lithic contact of depths less than 20 inches. Mellenthin soils also have a calcic horizon. Shedado soils have a lithic or paralithic contact at depths of 20 to 40 inches.
DRAINAGE AND PERMEABILITY: well drained, negligible to medium runoff, moderately slow to moderately rapid permeability
USE AND VEGETATION: Used for rangeland, wildlife habitat and irrigated crops. The potential vegetation is needleandthread, bottlebrush squirreltail, bud sagebrush, fourwing saltbush, and shadscale. Principal crops are alfalfa and small grains.
DISTRIBUTION AND EXTENT: South central and eastern Utah, western Colorado, and southern Wyoming. LRR D, MLRA 34A, 36. This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Wayne County, Utah. 1982.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: The zone from 0 to 3 inches. (A)
Particle size control section: The zone from 10 to 40 inches. (C2)
Some pedons have a Bk horizon below 40 inches.
Soil Taxonomy Second Edition, 1999