LOCATION WEDLAR NV

Established Series
Rev. WMA-GJS-JVC-JBF
06/2017

WEDLAR SERIES

The Wedlar series consists of very deep, well drained soils that formed in alluvium derived from granitic rocks or welded tuff. Wedlar soils are on fan remnants, ballenas, and inter-plateau basins. Slopes are 2 to 15 percent. The mean annual precipitation is about 230 mm and the mean annual temperature is about 11 degrees C.

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Durinodic Xeric Haplargids

TYPICAL PEDON: Wedlar loamy sand--rangeland. (Colors are for dry soil unless otherwise noted).

A--0 to 10 cm; grayish brown (10YR 5/2) loamy sand, dark brown (10YR 3/3) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; many very fine interstitial pores; 5 percent gravel; neutral; (pH 6.8); abrupt smooth boundary. (3 to 13 cm thick)

E--10 to 15 cm; light gray (10YR 7/2) sandy loam, dark grayish brown (10YR 4/2) moist; moderate thick platy structure; slightly hard, very friable, slightly sticky and nonplastic; few medium and common fine and very fine roots; many fine and very fine vesicular pores; 2 percent gravel; neutral (pH 7.0); abrupt smooth boundary. (3 to 10 cm thick)

Bt1--15 to 23 cm; light brownish gray (10YR 6/2) loam, brown (10YR 4/3) moist; weak coarse subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; few medium and common fine and very fine roots; few fine and many very fine tubular pores; 5 percent gravel; few faint clay bridges between sand grains; neutral (pH 7.2); clear smooth boundary. (8 to 13 cm thick)

Bt2--23 to 36 cm; pale brown (10YR 6/3) loam, brown (10YR 4/3) moist; weak medium and coarse subangular blocky structure; hard, very friable, slightly sticky and slightly plastic; few medium and fine and common very fine roots; few fine and many very fine tubular pores; common distinct clay bridges between sand grains; 5 percent gravel; neutral (pH 7.2); clear smooth boundary. (10 to 15 cm thick)

Bt3--36 to 48 cm; yellowish brown (10YR 5/4) sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium and fine subangular blocky structure; hard, friable, moderately sticky and moderately plastic; few medium and fine and common very fine roots; few fine and many very fine tubular pores; many distinct clay bridges between sand grains; 5 percent gravel; slightly alkaline (pH 7.4); clear wavy boundary. (8 to 18 cm thick)

Bt4--48 to 74 cm; yellowish brown (10YR 5/4) sandy clay, dark yellowish brown (10YR 4/4) moist; moderate medium and fine subangular blocky structure; very hard, firm, very sticky and very plastic; few very fine roots; few fine and common very fine tubular pores; common distinct clay films on faces of peds and lining pores; 10 percent gravel; neutral (pH 6.8); clear wavy boundary. (10 to 25 cm thick)

Bt5--74 to 94 cm; light yellowish brown (10YR 6/4) sandy clay loam, dark yellowish brown (10YR 4/4) moist; weak coarse subangular blocky structure; very hard, firm, moderately sticky and moderately plastic; few very fine roots; few fine and common very fine tubular pores; common distinct and few prominent clay films on faces of peds and lining pores; 10 percent gravel; neutral (pH 6.6); clear wavy boundary. (0 to 25 cm thick)

Bq--94 to 152 cm; pale brown (10YR 6/3) gravelly sandy loam, dark yellowish brown (10YR 4/4) moist; massive; hard, very friable, slightly sticky and slightly plastic; few very fine roots; few fine and common very fine tubular pores; 15 percent gravel and 2 percent cobbles; 20 percent weakly cemented durinodes; neutral (pH 7.2).

TYPE LOCATION: Lyon County, Nevada; about 2 miles north of the junction of Rough Creek and Bodie Creek; about 1,500 feet west and 1,400 feet north of the southeast corner of section 35, T. 7 N., R. 27 E.; USGS Ninemile Ranch 7.5 minute topographic quadrangle; latitude 38 degrees 25 minutes 08 seconds N and longitude 118 degrees 55 minutes 48 seconds W; WGS84 Decimal Degrees 38.4188889 latitude, -118.9300000 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry in the moisture control section; moist in winter and spring, dry in summer and fall except for 10 to 20 days cumulative between July and October due to convection storms; aridic soil moisture regime that borders on xeric.
Mean annual soil temperature: 9 to 14 degrees C.
Depth to base of argillic horizon: 64 to 100 cm.
Depth to horizons with durinodes: 64 to 100 cm.

Particle-size control section - Clay content: averages 24 to 35 percent.
Sand content: 35 to 65 percent.
Rock fragments: averages 0 to 15 percent, mainly gravel. Lithology of fragments is igneous rocks such as granite or tuff.

A horizon
Value: 5 through 7 dry, 3 or 4 moist.
Chroma: 2 or 3, dry or moist.
Clay content: 2 to 18 percent.
Structure: Granular, platy, or single grain.
Reaction: Slightly acid or neutral.

E horizon
Clay content: 2 to 18 percent.

Bt1 and Bt2 horizons
Clay content: 15 to 20 percent.
Rock fragments: 0 to 10 percent, mainly gravel.
Reaction: Neutral or slightly alkaline.

Bt3, Bt4 and Bt5 horizons - Value: 5 or 6 dry, 3 or 4 moist.
Chroma: 3 or 4, dry or moist.
Texture: Sandy clay loam or sandy clay; sandy clay occurs only in the lower subhorizons.
Clay content: 30 to 40 percent.
Rock fragments: 5 to 15 percent, mainly gravel.
Structure: Angular blocky or subangular blocky.
Reaction: Neutral or slightly alkaline.

Bq horizon - Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 3 or 4, dry or moist.
Texture: Gravelly sandy loam or gravelly loamy sand.
Rock fragments: 15 to 35 percent gravel.
Reaction: Neutral to moderately alkaline.
Effervescence: Noneffervescent to strongly effervescent.
Durinodes: 20 to 75 percent in a friable matrix.

COMPETING SERIES: These are the Aladshi, Alley, Allor, Chime, Cleghorn, Glyphs, Igert, Nevador, Qwynn, Wedertz, and Zevadez series.

All of these soils except Qwynn are drier during summer months. In addition: Aladshi and Allor soils have 15 to 35 percent rock fragments in the particle-size control section. Alley and Qwynn soils average more than 15 percent rock fragments in the particle-size control section. Chime soils are moderately deep to paralithic contacts. Cleghorn soils have horizons which are firm and brittle when moist. Igert soils are moderately deep to lithic contacts. Nevador soils do not have albic horizons, have argillic horizons with bases at 30 to 60 cm, and do not have gravelly horizons below the argillic horizon. Wedertz and Zevadez soils have horizons which are firm and brittle when moist.

GEOGRAPHIC SETTING: Wedlar soils are on fan remnants, ballenas, and inter-plateau basins. These soils formed in alluvium derived mainly from granitic rocks or welded rhyolitic tuff. Slopes are 2 to 15 percent. Elevations range from 1,524 to 2,195 meters. The climate is semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 200 to 250 mm, mean annual temperature is 8 to 12 degrees C, and the frost-free period is 100 to 130 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Rowel, Ravenell, and Wellsed soils. Rowel soils are loamy-skeletal and shallow to lithic contacts. Ravenell soils are loamy-skeletal and very shallow and shallow to paralithic contacts. Wellsed soils are moderately deep to indurated duripans.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; high or very high surface runoff; moderately high or moderately low saturated hydraulic conductivity.

USE AND VEGETATION: Wedlar soils are used for livestock grazing and wildlife habitat. The present vegetation is mainly Wyoming big sagebrush, Indian ricegrass, and galleta.

DISTRIBUTION AND EXTENT: Western Nevada. Wedlar soils are not extensive with about 8,000 acres of the series mapped to date. MLRA 26.

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

SERIES ESTABLISHED: Lyon County, Nevada, 1981.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 15 cm (A and E horizons).
Albic horizon - The zone from 10 to 15 cm (E horizon).
Argillic horizon - The zone from 15 to 94 cm (Bt1, Bt2, Bt3, Bt4, and Bt5 horizons).
Duric feature - The zone from 94 to 152 cm (Bq horizon).
Particle size control section - The zone from 15 to 65 cm (Bt1, Bt2, Bt3 and part of the Bt4 horizons).

ADDITIONAL DATA: User Pedon ID 2006NV019107.

National Cooperative Soil Survey
U.S.A.