LOCATION KUVASZ ID
Established Series
Rev. RWW/RGK/CBR
05/2018
KUVASZ SERIES
Landscape--lava fields
Landform--lava flows
Slope--0 to 12 percent
Parent material--alluvium derived from basalt
Mean annual precipitation--about 350 mm
Mean annual air temperature--about 5 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Calcic Haploxerolls
TYPICAL PEDON: Kuvasz gravelly loam in an area of rangeland (Colors are for dry soil unless otherwise noted.)
A1--0 to 5 cm; dark grayish brown (10YR 4/2) gravelly loam, very dark grayish brown (10YR 3/2) moist; weak very thick platy structure; soft, very friable, slightly sticky and slightly plastic; many very fine and common fine roots; many very fine tubular pores; 15 percent gravel; slightly alkaline (pH 7.4); abrupt wavy boundary
A2--5 to 36 cm; brown (10YR 4/3) gravelly loam, dark brown (10YR 3/3) moist; weak coarse prismatic structure parting to weak fine prismatic; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and few medium roots; many very fine tubular pores; 20 percent gravel; slightly alkaline (pH 7.6); clear wavy boundary
Bk1--36 to 53 cm; pale brown (10YR 6/3) gravelly loam, dark grayish brown (10YR 4/2) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and few fine roots; few very fine irregular pores; violently effervescent; few threadlike calcium carbonate masses throughout; 20 percent gravel; moderately alkaline (pH 8. 1); clear wavy boundary
Bk2--53 to 61 cm; pale brown (10YR 6/3) gravelly loam, dark grayish brown (10YR 4/2) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine roots; few very fine irregular pores; violently effervescent; many threadlike calcium carbonate masses throughout and calcium carbonate coatings on rock fragments; 25 percent gravel and 5 percent cobbles; moderately alkaline (pH 8.3); clear wavy boundary
Bk3--61 to 66 cm; very pale brown (10YR 8/2) very cobbly loam, very pale brown (10YR 7/3) moist; moderate medium subangular blocky structure; soft, friable, slightly sticky and slightly plastic; few very fine roots; few very fine irregular pores; violently effervescent; many threadlike calcium carbonate masses throughout and calcium carbonate coatings on rock fragments; 15 percent gravel, 20 percent cobbles, and 10 percent stones; moderately alkaline (pH 8.3); abrupt irregular boundary
R--66 cm; basalt; discontinuous laminar calcium carbonate cap; root mat 2 to 5 cm thick above cap
TYPE LOCATION: Clark County, Idaho; latitude 44.27194 degrees north, longitude 112.14917 degrees west, datum WGS 84
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--3.9 to 7.2 degrees C
Depth to bedrock--50 to 100 cm
Thickness of mollic epipedon--25 to 46 cm
Depth to calcic horizon--25 to 46 cm
Particle-size control section (weighted averages)
Clay content--18 to 27 percent
Total rock fragment content--20 to 35 percent
A horizon
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Gravel content--15 to 20 percent
Reaction--pH 6.6 to 7.8
Thickness--23 to 46 cm
Bk1 and Bk2 horizons
Value--6 to 8 dry, 4 to 7 moist
Chroma--2 or 3 dry or moist
Total rock fragment content--15 to 35 percent
Gravel content--15 to 30 percent
Cobble content--0 to 5 percent
Calcium carbonate equivalent--15 to 35 percent
Reaction--pH 7.9 to 8.4
Thickness--25 to 53 cm
Bk3 horizon
Value--6 to 8 dry, 4 to 7 moist
Chroma--2 or 3 dry or moist
Total rock fragment content--35 to 60 percent
Gravel content--15 to 30 percent
Cobble content--0 to 30 percent
Stone content--0 to 10 percent
Calcium carbonate equivalent--15 to 35 percent
Reaction--pH 7.9 to 8.4
Thickness--5 to 15 cm
COMPETING SERIES:
Araveton,
Causey,
Kerl,
Reavis--very deep to lithic contact
Picayune--silt loam or silty clay loam
GEOGRAPHIC SETTING:
Elevation--1620 to 1980 m
Mean annual precipitation--300 to 525 mm
Mean annual air temperature--2.8 to 6.1 degrees C
Frost-free period--70 to 100 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--5 to 25 um/sec
USE AND VEGETATION:
Major use--rangeland
Potential natural vegetation--threetip sagebrush, horsebrush, rabbitbrush, bluebunch wheatgrass, needle and thread, prairie Junegrass, Indian ricegrass, bluegrass, bushy bird's-beak, pussytoes, buckwheat
DISTRIBUTION AND EXTENT: Small extent in east-central Idaho; MLRAs 11 and 13
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Clark County, Idaho; 2018
REMARKS:
Diagnostic horizons and other features in this pedon
Mollic epipedon--zone from the surface to a depth of 36 cm (A1 and A2 horizons)
Calcic horizon--zone from 36 to 66 cm (Bk1, Bk2, and Bk3 horizons)
Depth to lithic contact--66 cm
Particle-size control section--zone from 25 to 66 cm (part of A2 horizon; Bk1, Bk2, and Bk3 horizons)
Taxonomic version--Twelfth Edition, 2014
National Cooperative Soil Survey
U.S.A.