LOCATION SARILDA IDEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, frigid Pachic Haploxerolls
TYPICAL PEDON: Sarilda silt loam--on a northeast aspect of 2 percent in cropland at an elevation of 5260 feet. (Colors are for dry soil unless otherwise stated. When described on May 23, 1979, the soil profile was moist throughout).
Ap--0 to 8 inches; dark grayish brown (10YR 4/2) silt loam, very dark grayish brown (10YR 3/2) moist; weak medium and coarse subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; few very fine tubular pores; slightly acid (pH 6.4); clear smooth boundary. (6 to 18 inches thick)
A--8 to 22 inches; brown (10YR 4/3) silt loam, dark brown (10YR 3/3) moist; moderate medium and coarse subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; few very fine tubular pores; neutral (pH 6.8); clear wavy boundary. (7 to 14 inches thick)
Bw--22 to 33 inches; brown (10YR 5/3) silt loam, dark brown (10YR 3/3) moist; weak coarse subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few fine and very fine roots; few fine tubular pores; neutral (pH 7.2); abrupt wavy boundary. (7 to 21 inches thick)
2R--33 inches; unweathered vesicular basalt bedrock.
TYPE LOCATION: Fremont County, Idaho; approximately 1 mile south and west of Ashton; about 590 feet west and 2,500 feet south of the northeast corner of section 2, T.8N., R.42E.
RANGE IN CHARACTERISTICS:
Solum thickness and depth to bedrock - 20 to 40 inches
Average annual soil temperature - 42 to 45 degrees F.
Average summer soil temperature - 60 to 62 degrees F
Control section - 6 to 18 percent clay
Rock fragments - 0 to 5 percent pebbles or cobbles
Reaction - Slightly acid or neutral
A and Bw horizons
Value - 4 or 5 dry
Chroma - 2 or 3, dry or moist
COMPETING SERIES: This is the Lostine series. It is greater than 60 inches deep.
GEOGRAPHIC SETTING: Sarilda soils are on nearly level to undulating loess covered basalt or rhyolite plains. Elevation is 5,130 to 5,350 feet. Average annual precipitation ranges from 15 to 17 inches. The average annual soil temperature is 40 to 43 degrees F and the frost-free season is 85 to 95 days. Precipitation is mainly in the form of snow. Minor amounts fall as spring and summer rain.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kucera, Rexburg, and Ririe soils. They are on adjacent slopes of the rhyolite or basalt plains. These soils are all deeper than 40 inches to bedrock and have calcic horizons.
DRAINAGE AND PERMEABILITY: Well drained; slow or medium runoff; moderate permeability.
USE AND VEGETATION: Cropland and rangeland. Common crops are irrigated alfalfa hay, wheat, barley, potatoes, pasture and nonirrigated alfalfa hay, wheat and barley. Potential natural plant community is bluebunch wheatgrass, Idaho fescue, needleandthread, mountain big sagebrush and antelope bitterbrush.
DISTRIBUTION AND EXTENT: These soils are inextensive in southeastern Idaho.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Fremont County, Idaho, 1989.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - surface to bedrock, 0 to 33 inches.(Ap, A2 and Bw horizons).
Lithic contact - at 33 inches (2R).