LOCATION ALOVAR UTEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, calcareous, mesic Xeric Torrifluvents
TYPICAL PEDON: Alovar loam, rangeland. (Colors are for air dry soil unless otherwise noted.)
A--0 to 6 inches; light brownish gray (2.5Y 6/2) loam, dark grayish brown (2.5Y 4/2) moist; weak thin platy structure that parts to weak fine granules; slightly hard, friable, slightly sticky, slightly plastic; common fine and medium roots; few fine and medium vesicular pores; strongly calcareous; moderately alkaline (pH 8.2); clear smooth boundary. (4 to 8 inches thick)
C1--6 to 18 inches; light brownish gray (2.5Y 6/2) clay loam, grayish brown (2.5Y 5/2) moist; massive; hard, friable, slightly sticky, slightly plastic; few fine and medium roots; common fine and medium tubular pores; strongly calcareous; moderately alkaline (pH 8.4); gradual wavy boundary. (10 to 20 inches thick)
C2--18 to 38 inches; light gray (5Y 7/2) silty clay loam, olive gray (5Y 5/2) moist; weak coarse blocky structure; hard, friable, slightly sticky, slightly plastic; few fine and medium roots; few fine, medium and coarse tubular pores; strongly calcareous; strongly alkaline (pH 8.7); gradual smooth boundary. (15 to 30 inches thick)
C3--38 to 60 inches; light gray (5Y 7/2) clay loam, olive (5Y 5/3) moist; massive; hard, friable, slightly sticky, slightly plastic; few fine tubular pores; strongly calcareous; strongly alkaline (pH 8.5).
TYPE LOCATION: Beaver County, Utah; 2 1/2 miles west of Manderfield; 1/4 mile south and 3/8 mile west of the NE corner of sec. 19, T.29S., R.7W.
RANGE IN CHARACTERISTICS: These soils are usually dry, but are continually moist in some part of the moisture control section for 35 to 45 percent of the time the soil temperature is above 41 degrees F., but are continually dry for more than 60 days. Mean annual soil temperature is 48 degrees to 51 degrees F. and mean summer temperature at 20 inches is 63 degrees to 65 degrees F.
The A horizon has hue of 2.5Y or 5Y, value of 5.5 through 7 dry, 3.5 through 5 moist, and chroma of 2 or 3. It has weak thin platy or weak fine granular structure and is moderately or strongly calcareous.
The C horizon has hue of 2.5Y or 5Y, value of 6 or 7 dry, 4 or 5 moist, and chroma of 2 or 3. It is silt loam to clay loam or silty clay loam and averages 28 to 35 percent clay and less than 15 percent sand coarser than very fine sand. It is moderately or strongly alkaline and contains some lime, mainly disseminated, but occasionally as veins.
COMPETING SERIES:
Genola (UT) soils have 18 to 27 percent clay in the control section.
Woodrow (UT) soils have 10YR or 7.5YR hue.
GEOGRAPHIC SETTING: These soils occur at elevations of 5,700 to 6,200 feet on alluvial fans, flood plains, and less commonly on rolling uplands. They formed in alluvium from olive colored shale. Slopes range from 3 to 10 percent. Mean annual temperature is 46 degrees to 50 degrees F., mean summer temperature is 64 degrees to 65 degrees F., and the frost-free period is 100 to 140 days. Average annual precipitation is 11 to 14 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Fruitland soils. Fruitland soils have hue of 10YR and contain less than 18 percent clay in the control section.
DRAINAGE AND PERMEABILITY: Well-drained; medium to rapid runoff; slow to moderate permeability.
USE AND VEGETATION: Principally used for rangeland, with limited acreage cultivated. Native plants are squirreltail, Indian ricegrass, western wheatgrass, black sagebrush, big sagebrush, greasewood, shadscale, and winterfat.
DISTRIBUTION AND EXTENT: Central and south-central Utah. These soils are inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Beaver County (East Beaver Area), Utah 1971.
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.