LOCATION BUDLEWIS ID

Established Series
Rev. DA/ALH/CLM
10/2018

BUDLEWIS SERIES

The Budlewis series consists of soils that are well drained and moderately deep to a duripan that formed in alluvium and loess from mixed sources and residuum from basalt. They are on terraces, calderas, foothills, structural benches, and tablelands. Permeability is slow. Slopes range from 1 to 10 percent. The average annual precipitation is about 360 mm, and the average annual temperature is about 6.7 degrees C.

TAXONOMIC CLASS: Fine, smectitic, frigid Typic Durixerolls

TYPICAL PEDON: Budlewis silt loam -- on a 2 percent slope under rangeland vegetation at 1,710 meter elevation. (Colors are for air-dry soil unless otherwise noted. When described on August 10, 1982, the soil was dry throughout.)

A--0 to 10 cm; brown (10YR 5/3) silt loam, very dark grayish brown (10YR 3/2) moist; moderate medium platy structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine to medium roots; many very fine tubular pores; neutral (pH 6.8); abrupt smooth boundary. (10 to 23 cm thick)

Bt1--10 to 28 cm; grayish brown (10YR 5/2) silty clay loam, very dark grayish brown (10YR 3/2) moist; moderate fine angular blocky structure; hard, firm, moderately sticky and moderately plastic; common very fine to medium roots; common very fine tubular pores; many distinct clay films on faces of peds and in pores; neutral (pH 6.8); clear smooth boundary. (13 to 25 cm thick)

Bt2--28 to 48 cm; pale brown (10YR 6/3) silty clay, brown (10YR 4/3) moist; strong medium prismatic structure; very hard, very firm, very sticky and very plastic; few very fine through medium roots; few very fine tubular pores; many prominent clay films on faces of peds and in pores; 5 percent gravel; neutral (pH 6.7); clear smooth boundary. (15 to 38 cm thick)

Btk--48 to 69 cm; very pale brown (10YR 7/3) silty clay loam, brown (10YR 5/3) moist; moderate medium angular blocky structure; very hard, firm, moderately sticky and moderately plastic; few very fine roots; few very fine tubular pores; common faint clay films on faces of peds and in pores; 5 percent gravel; strongly effervescent (16 percent calcium carbonate); slightly alkaline (pH 7.6); abrupt smooth boundary. (0 to 23 cm thick)

Bk--69 to 79 cm; very pale brown (10YR 8/4) silty clay loam, light yellowish brown (10YR 6/4) moist; massive; very hard, firm, moderately sticky and moderately plastic; few very fine roots; few very fine tubular pores; 5 percent gravel; 5 percent cobbles; violently effervescent (30 percent calcium carbonate); moderately alkaline (pH 7.9); abrupt smooth boundary. (10 to 25 cm thick)

Bkqm--79 to 91 cm; white (10YR 8/1) fractured indurated duripan, very pale brown (10YR 7/3) moist; platy; extremely hard, extremely firm; many 3 to 6 mm thick carbonate-silica cemented lenses mixed with basalt gravels and cobbles; few very fine and fine roots in fractures of the duripan; fractures are 6.3 mm wide and 25 cm apart; strongly effervescent; moderately alkaline (pH 8.4); abrupt smooth boundary. (1 to 19 inches thick)

2R--91 cm; dark gray (10YR 4/1) basalt, black (10YR 2/1) moist; violently effervescent carbonate coats on surface of bedrock.

TYPE LOCATION: Twin Falls County, Idaho; about 20 miles southwest of Rogerson, Idaho; in the southeast 1/4, northeast 1/4, southeast 1/4, section 24, T. 14 S., R. 12 E.; USGS Cedar Creek Reservoir 7.5 minute topographic quadrangle; latitude 42 degrees 11 minutes 29 seconds N and longitude 114 degrees 59 minutes 28 seconds W; WGS84 Decimal Degrees 42.1913889 latitude, -114.991111 longitude.

RANGE IN CHARACTERISTICS:

Mollic epipedon thickness - 25 to 36 cm.
Depth to the duripan - 50 to 99 cm.
Depth to bedrock - 53 to 100 cm
Average clay content in the control section - 40 to 50 percent Average annual soil temperature - 6.1 to 8.3 degrees C.
Xeric moisture regime bordering on aridic.

A horizon
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 2 or 3 dry or moist

Bt horizon
Hue - 10YR or 7.5YR
Value - 5 through 7 dry, 3 through 5 moist
Chroma - 2 through 4 dry or moist
Structure - angular blocky or prismatic
Textures - silty clay loam, clay, or silty clay.
Clay content of subhorizons - 35 to 55 percent
Gravel - 0 to 10 percent
Cobbles - 0 to 5 percent
Reaction - neutral or mildly alkaline

Btk and Bk horizons
Value - 7 or 8 dry, 5 or 6 moist
Texture - silty clay loam, clay loam, or gravelly loam.
Clay - 24 to 35 percent
Gravel - 0 to 20 percent
Cobbles - 0 to 5 percent
Reaction - mildly alkaline through strongly alkaline
Calcium carbonate equivalent - 15 to 40 percent

Bkqm horizon
Thickness of laminar capping - 1.5 mm to 25.4 mm.
Thickness of subsequent laminations - 12.7 mm to 8 cm.
Cementation below capping - weakly through very strongly
Width of fractures - 6.3 to 12.7 mm.
Distance between fractures - 20 to 50 cm.

COMPETING SERIES: These are the Forvic, Hatpeak, Manard, Oshone (T), Peevywell, and Rastus series. Forvic soils have a 50 to 75 cm thick mollic epipedon, and average 50 to 59 percent clay in the control section. Hatpeak, Oshone, Peevywell, and Rastus soils are more than 40 inches deep to bedrock. Manard soils have a 18 to 25 cm thick mollic epipedon, and lack a Bk horizon above the duripan.

GEOGRAPHIC SETTING: Budlewis soils are on terraces, calderas, foothills, structural benches, and tablelands. The slope ranges from 1 to 10 percent. The soils formed in alluvium and loess from mixed sources, and residuum from basalt. Elevations are 5,000 to 1,925 meters. The average annual precipitation ranges from 300 to 410 mm. The average annual temperature is 5.0 to 7.8 degrees C. The frost free season is 70 to 100 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Chayson, Howcree, and Tanner soils. Chayson and Tanner soils occur on elevated areas on the same landscape. Chayson soils are fine-loamy. Tanner soils do not have an abrupt textural change between the A and B horizon. Howcree soils occur on higher terraces, are very deep, and are clayey-skeletal.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained, slow through medium runoff; slow hydraulic conductivity.

USE AND VEGETATION: Budlewis soils are used for rangeland and wildlife habitat. Native vegetation is low sagebrush, bluebunch wheatgrass, Idaho fescue, and Sandberg bluegrass.

DISTRIBUTION AND EXTENT: Budlewis soils are of moderate extent in southern Idaho. MLRA 25.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California

SERIES ESTABLISHED: Twin Falls County, Idaho, 1992.

REMARKS: Base saturation: 0-10 cm - 77 percent; 10-28 cm - 83 percent; 28-48 cm - 83 percent.

Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - surface to 28 cm (the A and Bt1 horizons).
Argillic horizon - from 10 to 69 cm (the Bt1, Bt2, and Btk horizons).
Calcic horizon - from 48 to 79 cm (the Btk and Bk horizons).
Duripan - from 79 to 91 inches (Bkqm horizon).
Lithic contact - The boundary at 91 cm (R layer).

Particle-size control section - The zone from 10 to 60 cm (Bt1, Bt2 and part of the BTK horizons).

This soil approaches an abrupt textural change at the top of the argillic but data indicates it does not qualify.

National Cooperative Soil Survey
U.S.A.