LOCATION PRINGLE UTEstablished Series
TAXONOMIC CLASS: Coarse-loamy over sandy or sandy-skeletal, mixed, superactive, frigid Fluvaquentic Haplustolls
TYPICAL PEDON: Pringle loam--irrigated pasture. (Colors are for moist soil unless otherwise stated.)
A1--0 to 3 inches; very dark grayish brown (10YR 3/2) loam, dark grayish brown (10YR 4/2) dry; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; many very fine and fine pores; moderately calcareous, carbonates are disseminated; mildly alkaline (pH 7.8); clear smooth boundary. (3 to 8 inches thick)
A2--3 to 11 inches; dark brown (10YR 3/3) loam, dark grayish brown (10YR 4/2) dry; weak fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common very fine roots; many very fine pores; moderately calcareous, carbonates are disseminated; mildly alkaline (pH 7.8); abrupt smooth boundary. (0 to 8 inches thick)
A/C--11 to 19 inches; very dark grayish brown (10YR 3/2) stratified silt loam and loam, grayish brown (10YR 5/2) dry; common medium prominent yellowish red (5YR 5/6) mottles; weak medium platy structure; slightly hard, very friable, slightly sticky and slightly plastic; few very fine and fine roots; common very fine and fine pores; moderately calcareous, carbonates are disseminated; mildly alkaline (pH 7.8) abrupt wavy boundary. (8 to 12 inches thick)
2C1--19 to 45 inches; dark brown (10YR 4/3) very gravelly sand, brown (10YR 5/3) dry; many fine distinct strong brown (7.5YR 5/8) mottles; single grain; loose; few very fine and fine roots; 55 percent gravel; mildly alkaline (pH 7.8); gradual wavy boundary. (26 to 40 inches)
2C2--45 to 60 inches; dark brown (10YR 4/4) very gravelly sand, yellowish brown (10YR 5/4) dry; single grain; loose; 55 percent gravel and 15 percent cobbles; mildly alkaline (pH 7.8).
TYPE LOCATION: Morgan County, Utah; 1 1/2 miles north of Milton; 1,100 feet east and 2,200 feet south of northwest corner of sec. 16, T. 4 N., R. 2 E.
RANGE IN CHARACTERISTICS: The mollic epipedon ranges from 12 to 19 inches thick. Depth to the very gravelly sand 2C horizon ranges from 19 to 28 inches. When the mollic epipedon is greater than 16 inches thick the depth to the contrasting 2C horizon is less than 20 inches. The upper part of the particle size control control section averages 8 to 18 percent clay and more than 15 percent but less than 50 percent fine or coarse sand. Organic matter decreases irregularly as depth increases and remains above 0.5 percent to a depth of 50 inches. Depth to water table fluctuates with the season and ranges from 10 to more than 60 inches and is 12 to 24 inches below the surface during the period between February and June. The mean annual soil temperature at a depth of 20 inches ranges from 67 to 69 degrees F. The soil is dry in the 8 to 24 inch depth for 90 cumulative days but is not dry for 60 or more consecutive days during the summer. Rock fragments are rounded gravel and cobbles, and range from 50 to 70 percent in the 2C horizons.
The A horizon has a hue of 10YR or 7.5YR, value of 4 or 5 dry,
and chroma of 2 to 4 dry, 2 or 3 moist. It ranges from loam to silt loam. Reaction is mildly alkaline to moderately alkaline.
The A/C horizon has hue of 10YR or 7.5YR, value of 5 or 6 dry, 3 or 4 moist, and chroma of 2 to 4 dry and moist. It has stratified layers of silt loam, sandy loam, very fine sandy loam, and loamy fine sand. Mottles range from common medium, prominent to common fine and distinct. The A/C horizon is mildly alkaline or moderately alkaline.
The 2C horizon has value of 5 or 6 dry and chroma of 2 to 4 dry and moist. It is mildly alkaline or moderately alkaline.
COMPETING SERIES: No other series are in this family. Similar soils are Steed and Utaba series. Steed soils lack both mottles and coarse loamy material in the upper part of the particle size control section. Utaba soils have mollic epipedons 20 to 29 inches thick and lack mottles.
GEOGRAPHIC SETTING: Pringle soils are at elevations of 4,800 to 7,000 feet. They occur on flood plains and stream terraces and valley floors. Slopes range from 0 to 3 percent. These soils formed in alluvium derived from sandstone, quartzite, and limestone. The climate is moist subhumid and the average annual precipitation ranges from 16 to 22 inches. The mean annual temperature is 42 to 46 degrees F. The mean summer temperature is 63 to 66 degrees F., and the freeze-free period ranges from 70 to 105 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Canburn, Eastcan, Irim, Redola, Sowcan and Sunset soils and the competing Steed soils. Canburn, Eastcan, Redola and Sowcan soils have mollic epipedons more than 20 inches thick, and Canburn and Eastcan soils have more than 18 percent clay in the particle size control section. Eastcan and Redola soils are dry for more than 60 consecutive days during the summer. All of these soils lack very gravelly sand 2C horizons in the lower part. Irim soils have 18 to 35 percent clay in the particle size control section.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow runoff; permeability is moderate.
USE AND VEGETATION: Irrigated cropland, improved pasture, and native pasture. The present native vegetation is narrowleaf cottonwood, willows and bluegrass.
DISTRIBUTION AND EXTENT: Northern Utah. This series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Morgan Area, Morgan County, Utah, 1974.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface of the soil to a depth of approximately 19 inches.
Aquic feature -undrained soils are continuously saturated with water within 1 meter of the surface for 90 or more days from February to June in most years.
NOTE: Classification changed from coarse-loamy over fragmental because the representative pedon contains too much fine earth to qualify as fragmented.