LOCATION SELIA NE+SDEstablished Series
TAXONOMIC CLASS: Sandy, mixed, mesic Typic Natraqualfs
TYPICAL PEDON: Selia loamy fine sand with a one percent, southeast-facing slope in native grass. (Colors are for dry soil unless otherwise stated.) When described, the soil was dry throughout.
A--0 to 8 centimeters (0 to 3 inches); gray (10YR 5/1) loamy fine sand, black (10YR 2/1) moist; weak fine granular structure; soft, very friable; neutral; abrupt wavy boundary. (0 to 20 centimeters (0 to 8 inches) thick)
E--8 to 10 centimeters (3 to 4 inches); gray (10YR 6/1) fine sand, dark gray (10YR 4/1) moist; single grained; loose; neutral; abrupt wavy boundary. (2 to 10 centimeters (1/2 to 4 inches) thick)
Btn1--10 to 30 centimeters (4 to 12 inches); dark gray (10YR 4/1) loamy fine sand, very dark gray (10YR 3/1) moist; weak coarse columnar structure parting to weak coarse subangular blocky; very hard, friable; few clay bridgings between sand grains; many fine and medium threadlike accumulations of carbonates; strong effervescence; very strongly alkaline; clear wavy boundary.
Btn2--30 to 41 centimeters (12 to 16 inches); grayish brown (10YR 5/2) loamy fine sand, dark gray (10YR 4/1) moist; weak coarse prismatic structure parting to weak coarse subangular blocky; very hard, friable; few clay bridgings between sand grains; few fine thread-like accumulations of carbonates; slight effervescence; very strongly alkaline; clear wavy boundary. (Combined thickness of B2t horizons is 18 to 46 centimeters (7 to 18 inches) thick)
Bn--41 to 64 centimeters (16 to 25 inches); light brownish gray (10YR 6/2) loamy fine sand, dark grayish brown (10YR 4/2) moist; few fine faint yellowish brown (10YR 5/6 moist) mottles; weak coarse prismatic structure; very hard, friable; few fine thread-like accumulations of carbonates; slight effervescence; very strongly alkaline; abrupt smooth boundary. (0 to 23 centimeters (0 to 9 inches) thick)
C1--64 to 102 centimeters (25 to 40 inches); light gray (10YR 7/2) fine sand, grayish brown (10YR 5/2) moist; common medium and fine prominent reddish brown (5YR 5/4 moist) mottles; single grained; loose; neutral; clear smooth boundary. (25 to 51 centimeters (10 to 20 inches) thick)
C2--102 to 152 centimeters (40 to 60 inches); grayish brown (10YR 5/2) sand, dark grayish brown (10 YR 4/2) moist; common medium and fine prominent reddish brown (5YR 5/4 moist) mottles; single grained; loose; neutral.
TYPE LOCATION: Holt County, Nebraska; about 16 kilometers (10 miles) south and 14 kilometers (9 miles) west of O'Neill; 381 meters (1,250 feet) west and 46 meters (150 feet) south of northeast corner of section 21, T. 27 N., R. 13 W.
RANGE IN CHARACTERISTICS:
Thickness of the solum: 20 to 81 centimeters (8 to 32 inches)
Carbonates: typically 10 centimeters (4 inches), but the range is from 0 to 30 centimeters (0 to 12 inches)
Exchangeable sodium: high
A horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5, 2 or 3 moist
Chroma: 1 or 2
Texture: fine sand, loamy sand or loamy fine sand
Reaction: neutral to strongly alkaline
E horizon:
Hue: 10YR or 2.5Y
Value: 4 to 8, 3 to 7 moist
Chroma: 1 to 3
Texture: typically fine sand but includes loamy sand and loamy fine sand
Reaction: neutral to very strongly alkaline
Btn horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5, 3 or 4 moist
Chroma: 1 or 2
Horizons with chroma of 2: mottled
Texture: typically loamy fine sand, but includes loamy sand
Exchangeable sodium percentage: exceeds 15 percent
Sodium absorption ratio: exceeds 13 in some part of the Bt horizon above 41 centimeters (16 inches).
In some pedons, the Btn horizon contains accumulations of carbonates.
Reaction: strongly alkaline or very strongly alkaline
.
C horizon:
Hue: 10YR or 2.5Y
Value: 5 to 8, 4 to 7 moist
Chroma: 2 or 3
Texture: typically fine sand and sand but including loamy sand and loamy fine sand
Thinly strastified lower C horizon: finer or coarser textures in some pedons
Loamy material: below 102 centimeters (40 inches) in some pedons
Reaction: neutral to very strongly alkaline
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING:
Land form: bottom lands and stream terraces of major stream valleys and in basins of the sandhills
Parent material: sandy alluvium or eolian material
Exchangeable sodium: High
Slope: typically less than 1 percent, but ranges from 0 to 2 percent
Mean annual precipitation: 43 to 58 centimeters (17 to 23 inches)
Mean annual air temperature: 8 to 11 degrees C. (47 to 52 degrees F.)
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Els,
Elsmere,
Gannett,
Ipage,
Loup,
Lute,
Ord,
Tryon,
Valentine and Whitlake soils.
All of these associated soils lack a natric horizon, except for Lute and
Whitelake soils.
Lute and Whitelake soils are on similar landscape positions.
Els, Elsmere, and Ord soils are in similar topographic positions.
Gannett, Loup, and Tryon soils are slightly lower in the landscape and are poorly or very poorly drained.
Ipage and Valentine soils are higher in the landscape and are better drained.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: somewhat poorly drained
Runoff: low
Saturated Hydraulic Conductivity: moderately low over high
Seasonal high water table: 46 centimeters (1.5 feet) in most wet years, 76 centimeters (2.5 feet) in most dry years
USE AND VEGETATION: Native range or hayland.
Native vegetation includes mostly alkali sacaton, inland saltgrass, western wheatgrass, plains bluegrass, foxtail barley, alkali cordgrass, and sedges.
In places, the vegetation is sparse.
DISTRIBUTION AND EXTENT: In and near the sandhill areas of Nebraska. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Denver, Colorado
SERIES ESTABLISHED: Holt County, Nebraska, 1981.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon 0 to 10 centimeters (0 to 4 inches).
Natric horizon: 10 to 41 centimeters (4 to 16 inches)
Additional data: Reference: Soil No. S76NE-089-3 and S76NE-089-4, National Soil Survey Laboratory.
Modified format by LRM in 6/2006 to include metric conversion and change permeability to saturated hydraulic conductivity.