LOCATION QUINNEY UTEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, mesic Typic Natrixerolls
TYPICAL PEDON: Quinney silt loam - cultivated. (Colors are for air-dry soil unless otherwise stated.)
Ap--0 to 8 inches; grayish brown (10YR 5/2) silt loam, very dark grayish brown (10 3/2) moist; weak fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; many fine roots; common fine and medium pores; noncalcareous; slightly alkaline (pH 7.8); clear smooth boundary. (6 to 10 inches thick)
Btn1--8 to 12 inches; grayish brown (10YR 5/2) loam, very dark grayish brown (10YR 3/2) moist; moderate medium prismatic structure that parts to moderate medium angular blocky structure; very hard, firm slightly sticky, slightly plastic; common fine roots; many fine pores; thin continuous clay films; noncalcareous; moderately alkaline (pH 8.0); gradual smooth boundary. (4 to 7 inches thick)
Btn2--12 to 18 inches; light brownish gray (10YR 6/2) loam, dark grayish brown (10YR 4/2) moist; weak medium prismatic structure that parts to moderate medium angular blocky structure; very hark, firm, slightly sticky, slightly plastic; few fine roots; many fine pores; many thin clay films; moderately calcareous; strongly alkaline (pH 8.7); clear smooth boundary. (4 to 7 inches)
Ck--18 to 26 inches; pale brown (10YR 6/3) heavy loam, brown (10YR 5/3) moist; moderate medium subangular blocky structure; very hard, firm, sticky, plastic; few fine roots; common fine and few medium pores; strongly calcareous; very strongly alkaline (pH 9.3); gradual wavy boundary. (6 to 16 inches thick)
C--26 to 39 inches; very pale brown (10YR 7/3)loam, brown (10YR 5/3) , moist; common medium distinct, strong brown (7.5YR 5/8) mottles; massive; slightly hard, friable, slightly sticky, slightly plastic; common fine pores; strongly calcareous; very strongly alkaline (pH 9.3); abrupt smooth boundary. (9 to 30 inches thick)
2C--39 to 58 inches; very pale brown (10YR 7/3) silty clay, brown (10YR 5/3) moist; common medium distinct, strong brown (7.5YR 5/8) mottles; massive; extremely hard, very firm, sticky, plastic; common fine pores; strongly calcareous; very strongly alkaline (pH 9.6).
TYPE LOCATION: Cache County, Utah; 2 miles west and 1 1/2 miles south of Lewiston; 100 feet north and 200 feet east of the southwest corner of the NW1/4 sec. 18, T.14N., R.IE.
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 40 degrees to 51 degrees F., and the mean summer temperature at a depth of 20 inches ranges from 65 degrees to 68 degrees F. The soils are moist for 55 to 65 percent of the time and are dry in all parts of the 8 to 24 inch zone for 60 to 75 consecutive days or more in the summer and autumn.
The mollic epipedon ranges from 10 to 15 inches thick. The combined thickness of the A and Btn horizons ranges from 16 to 21 inches over the horizon of carbonate accumulation. A water table occurs at variable depths below 30 inches. Exchangeable sodium percentage ranges from 3 to 15 percent in the A horizon, 15 to 50 percent in the Btn horizon and usually 40 to 80 percent in the C horizon.
The A horizon has chroma of 2 or 3. It has weak thin platy to weak fine to medium granular to subangular blocky structure. This horizon is mildly or moderately alkaline and is noncalcareous or slightly calcareous.
The Btn horizon has hue of 10YR or 7.5YR, value of 4 or 5 dry, and 2 or 3 moist in the upper portion and and 6 dry and 4 moist in the lower portion and chroma of 2 or 3. It ranges from loam to very fine sandy loam or silt loam with less than 15 percent coarser than very fine sand and averages less than very fine sand and averages less than 18 percent clay. This horizon has weak to moderate, medium prismatic structure that parts to subangular blocky structure. It is moderately or strongly alkaline and is noncalcareous to moderately calcareous. The Btn horizon has thin to moderately thick, common to continuous clay films. It is 8 to 13 inches thick.
The Ck and C horizons have value of 6 or 7 dry and 4 or 5 moist. They have common distinct strong brown (7.5YR 5/8) mottles at depths below 24 inches. These horizons range from silt loam or loam to silty clay and some areas of fine sandy loam.
COMPETING SERIES: These are the Airport, Harrisville, and Trenten series. Airport soils have silty clay loam natric horizons and have calcic horizons within 16 inches of the surface. Harrisville soils lack mollic epipedons and have silty clay loam natric horizons. Trenton soils have silty clay natric horizons.
GEOGRAPHIC SETTING: Quinney soils are on nearly level to gently sloping low lake terraces at elevations of 4,420 to 4,500 feet. Gradients are 0 to 3 percent. These soils formed in mixed lake sediments. The climate is dry subhumid. The average annual precipitation ranges from 16 to 18 inches, the mean annual temperature ranges from 45 to 47 degrees F., the mean summer temperature ranges from 68 to 72 degrees F., and the frost-free period ranges from 120 to 140 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Lewiston and Kidman soils and the competing Trenton soils. Lewiston and Kidman soils lack natric horizons and have fine sandy loam control sections.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow runoff; moderate to slow permeability.
USE AND VEGETATION: These soils are used principally for irrigated cropland of alfalfa, barley, sugar beets, and pasture. Potential vegetation consists of The native vegetation is saltgrass, alkali sacaton, foxtail, gumweed, and greasewood.
DISTRIBUTION AND EXTENT: Valley areas of northern Utah. This series is inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Cache County Utah, 1972.
REMARKS: The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data. The remainder of this document has not been updated.