LOCATION SHANO WA+ID+OR
Established Series
Rev. CDL/KWH/RWL
09/2019
SHANO SERIES
Landscape--plateaus, hills
Landform--terraces, hillslopes
Slope--0 to 65 percent
Parent material--loess
Mean annual precipitation--about 205 mm
Mean annual air temperature--about 10 degrees F
Depth class--very deep
Drainage class--well drained
Soil moisture regime--aridic (bordering xeric)
Soil temperature regime--mesic
Soil moisture subclass--xeric
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, mesic Xeric Haplocambids
TYPICAL PEDON: Shano silt loam, cultivated (All textures are apparent field textures.)
Ap--0 to 20 cm; silt loam, pale brown (10YR 6/3) dry, dark grayish brown (10YR 4/2) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; many fine roots; many very fine and fine irregular pores; slightly alkaline (pH 7.6); abrupt smooth boundary
Bw1--20 to 48 cm; silt loam, pale brown (10YR 6/3) dry, brown (10YR 4/3) moist; weak coarse and medium prismatic structure; soft, very friable, slightly sticky and slightly plastic; common fine roots; common very fine tubular pores; slightly alkaline (pH 7.6); gradual wavy boundary
Bw2--48 to 84 cm; silt loam, pale brown (10YR 6/3) dry, brown (10YR 4/3) moist; massive; soft, very friable, slightly sticky and slightly plastic; common fine roots; common very fine tubular pores; moderately alkaline (pH 8.0); clear wavy boundary
Bk1--84 to 107 cm; silt loam, pale brown (10YR 6/3) dry, dark grayish brown (10YR 4/2) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; few roots; common very fine tubular pores; violently effervescent; moderately alkaline (pH 8.2); common concentric hard (cicada) nodules; gradual wavy boundary
Bk2--107 to 145 cm; silt loam, pale brown (10YR 6/3) dry, brown (10YR 5/3) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; few roots; common very fine tubular pores; few concentric hard (cicada) nodules; strongly effervescent; strongly alkaline (pH 8.6); gradual wavy boundary
Bk3--145 to 170 cm; silt loam, pale brown (10YR 6/3) dry, dark grayish brown (10YR 4/2) moist; massive; hard, firm, slightly sticky and slightly plastic; few roots; few very fine tubular pores; strongly effervescent; pockets of soft, very friable material; strongly alkaline (pH 9.0)
TYPE LOCATION: Grant County, Washington; 45 m south and 305 m east of the northwest corner of section 19, T. 19 N., R. 30 E.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--10 to 13 degrees C
Moisture control section--continuously dry in all parts between depths of 10 and 30 cm from about May 1 to October 1
Depth to calcium carbonate--30 to 115 cm
Particle-size control section--5 to 10 percent clay; less than 15 percent sand coarser than very fine sand
Content of organic matter in upper 20 cm--less than 1 percent when mixed
Depth to stratification in some pedons--100 to 150 cm
Ap horizon
Value--4 to 6 dry, 3 to 5 moist
Chroma--2 to 4 moist or dry
Reaction--6.6 to 8.4
Thickness--10 to 20 cm
Bw horizon
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 to 4 moist or dry
Reaction--7.4 to 8.4
Combined thickness--41 to 91 cm
Bk horizon
Value--5 to 8 dry, 4 to 6 moist
Chroma--2 to 4 moist or dry
Texture--silt loam, very fine sandy loam
Calcium carbonate equivalent--2 to 15 percent
Reaction--7.4 to 9.0
Combined thickness of Bk1 and Bk2 horizons--greater than 39 cm
COMPETING SERIES:
Bedground--100 to 150 cm (deep) to a lithic contact (basalt)
Sagemoor--carbonates at a depth of 35 to 60 cm; laminae at a depth of 40 to 75 cm (2C horizon)
Warden--stratified silt loam or stratified silt loam and very fine sandy loam in lower part of particle-size control section (2Bk horizon); stratified 2C horizon at a depth of 100 to 150 cm or more; duripan at a depth of 100 to 150 cm or more
GEOGRAPHIC SETTING:
Elevation--dominantly 150 to 700 m, 890 to 1275 m in Idaho
Climate--semiarid; warm, dry summers; cool, moist winters
Mean annual precipitation--150 to 255 mm
Mean January air temperature--about -2 degrees C
Mean July air temperature--about 22 degrees C
Mean annual air temperature--about 8 to 12 degrees C
Frost-free season--120 to 200 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Burke--on uplands; 50 to 100 cm (moderately deep) to a duripan
Esquatzel--on bottomlands; mollic epipedon
Prosser--on plateaus; 50 to 100 cm (moderately deep) to a lithic contact (basalt)
Scooteney--on alluvial fans; coarse-loamy particle-size class
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--nonirrigated wheat production, livestock grazing, irrigated crop production
Native vegetation--bluebunch wheatgrass, beardless wheatgrass, Sandberg bluegrass, Cusick's bluegrass, Wyoming big sagebrush
DISTRIBUTION AND EXTENT: Central Washington, eastern Oregon, and southern Idaho; MLRAs 7 and 8; large extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Adams County, Washington; 1966
REMARKS:
Diagnostic horizons and other features in this pedon
*Ochric epipedon
*Cambic horizon--zone from 20 to 48 cm
*Carbonate accumulation--zone from 84 to 170 cm
*Particle-size control section--zone from 25 to 100 cm
National Cooperative Soil Survey
U.S.A.