LOCATION BENSTOT UTEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Oxyaquic Haploxerolls
TYPICAL PEDON: Benstot loam - meadowland. (Colors are for air-dry soil unless otherwise stated.)
A1--0 to 8 inches; very dark grayish brown (10YR 3/2) loam; grayish brown (10YR 5/2) dry; weak fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; many very fine and fine and medium roots; few very fine vesicular pores; strongly effervescent; moderately alkaline (pH 8.0); clear smooth boundary. ( 5 to 8 inches thick)
A2--8 to 16 inches; very dark grayish brown (10YR 3/2) silt loam; grayish brown (10YR 5/2) dry; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; many very fine, fine and few medium roots, few very fine tubular pores; strongly effervescent; moderately alkaline (pH 8.0); abrupt smooth boundary. ( 4 to 20 inches thick)
Bw--16 to 32 inches; dark grayish brown (10YR 4/2) silt loam; light brownish gray (10YR 6/2) dry; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; many very fine and fine and few medium roots; few very fine tubular pores; moderately effervescent; mildly alkaline (pH 7.8); clear smooth boundary. (15 to 24 inches thick)
C1--32 to 60 inches; dark brown (10YR 4/3) silt loam; pale brown (10YR 6/3) dry; massive; few weak distinct mottles (7.5YR 5/4); few very fine and fine roots; slightly hard, friable, slightly sticky, slightly plastic, few very fine and fine roots; moderately effervescent; mildly alkaline (pH 7.6).
TYPE LOCATION: Millard County, Utah; about 3 miles northwest of the town of Meadow, located 2,000 feet west, 500 feet north of the southeast corner sec. 1, T. 22 S., R 6 W., lat. 38 degrees, 55 minutes, 38 seconds N. and long. 112 degrees, 29 minutes, and 10 seconds W.
RANGE IN CHARACTERISTICS: Depth to the water table is 30 to 48 inches. Mean annual soil temperature ranges from 49 to 52 degrees F., and mean summer soil temperature ranges from 65 to 74 degrees F.
The particle size control section ranges from 18 to 27 percent clay. Thickness of the mollic epipedon is 12 to 16 inches. Reaction is mildly to moderately alkaline throughout the profile.
The A horizon has value of 4 or 5 dry, and 2 or 3 moist, with chroma of 1 to 3.
The Bw and C horizon has value of 5 or 6 dry, 4 or 5 moist, with chroma of 1 to 3. Redox concentrations occur below 30 inches. The Bw horizon when present doesn't meet the definition of a cambic horizon.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Benstot soils are on flood plains. Slopes are 0 to 2 percent. The soil formed in alluvium derived from limestone, quartzite and sandstone. Elevation ranges from 4600 to 6000 feet. The mean annual precipatation ranges from 8 to 14 inches. Mean annual air temperature ranges from 45 to 52 degrees F. Freeze-free period is about 100 to 140 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Beckstrand, Deseret, Oakcity, Heist and Kanosh soils. Beckstrand soils has less than 18 percent clay in the particle size control section. Deseret and Kanosh soils do not have a mollic epipedon and are influenced with gypsum. Oakcity soils do not have a mollic epipedon and contain more than 35 percent clay. Heist soils do not have a mollic epipedon and are well drained.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow to very slow runoff; moderate permeability.
USE AND VEGETATION: These soils are used principally for rangeland and nonirrigated pasture. Potential vegetation consists of sedges, redtop, tufted hairgrass and wiregrass.
DISTRIBUTION AND EXTENT: The Benstot soils are located in west central, Utah. MLRA 28A. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Millard County, Utah; Millard County, Eastern Part Soil Survey, 1995.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the soil surface to about 16 inches (A1, A2 horizons)
Particle size control section - the zone from 10 to 40 inches. (A2, C1, C2 horizons)
The classification is based on the "Keys to Soil Taxonomy, Eighth Edition, 1998".