LOCATION SADER                   NV

Established Series
Rev. WMA/RWM/ELS/JBF
10/2019

SADER SERIES

The Sader series consists of very deep, somewhat poorly drained soils that formed in lacustrine materials derived from mixed rocks. Sader soils are on lake terraces and lake plains. Slopes are 0 to 2 percent. Mean annual precipitation is about 225 mm and the mean annual temperature is about 7 degrees C.

TAXONOMIC CLASS: Fine, smectitic, frigid Aquic Natrargids

TYPICAL PEDON: Sader loam - rangeland. (Colors are for dry soil unless otherwise noted.)

A1--0 to 5 cm; light brownish gray (10YR 6/2) loam, very dark grayish brown (10YR 3/2) moist; moderate very fine granular structure; soft, very friable, slightly sticky and slightly plastic; common very fine roots; many very fine interstitial pores; violently effervescent; strongly alkaline (pH 8.6); abrupt smooth boundary. (3 to 10 cm thick)

A2--5 to 13 cm; light gray (10YR 7/2) loam, dark grayish brown (10YR 4/2) moist; strong very fine granular structure; soft, very friable, slightly sticky and slightly plastic; few fine, very fine and medium roots; many very fine interstitial pores; violently effervescent; strongly alkaline (pH 8.8); clear smooth boundary. (3 to 10 cm thick)

Btnq--13 to 25 cm; light gray (10YR 7/2) with very pale brown (10YR 8/2) carbonate coats on ped surfaces, heavy silty clay loam, light brownish gray (10YR 6/2), brown (10YR 4/3) and pale brown (10YR 6/3) moist; moderate medium subangular blocky structure; hard, firm, very sticky and very plastic; common very fine and fine, few medium roots; common very fine and few fine tubular pores; 20 percent very hard and very firm durinodes; few faint clay films in pores; violently effervescent; strongly alkaline (pH 9 .0); clear wavy boundary. (0 to 13 cm thick)

Btn1--25 to 38 cm; pale brown (10YR 6/3) with brown (10YR 4/3) organic coats, silty clay, brown (10YR 4/3), brown (10YR 5/3), and pale brown (10YR 6/3) moist; moderate fine and medium prismatic parting to medium and coarse subangular blocky structure; hard, firm, very sticky and very plastic; few fine and very fine roots; common very fine tubular pores; common distinct clay films on faces of peds and continuous faint clay films in pores; violently effervescent; very strongly alkaline (pH 9.4); abrupt wavy boundary. (10 to 25 cm thick)

Btn2--38 to 64 cm; very pale brown (10YR 7/3) silty clay loam, brown (10YR 5/3) moist; moderate fine prismatic parting to weak medium subangular blocky structure; hard, friable, moderately sticky and moderately plastic; few fine and very fine roots; few very fine tubular pores; few faint clay films on faces of peds; violently effervescent; very strongly alkaline (pH 9.6); gradual wavy boundary. (15 to 30 cm thick)

Bk--64 to 86 cm; light gray (2.5Y 7/2) silty clay loam, grayish brown (2.5Y 5/2) moist; weak medium prismatic parting to weak fine subangular blocky structure; slightly hard, friable, moderately sticky and very plastic; few fine and very fine roots; many very fine interstitial pores; many medium faint very pale brown (10YR 7/3) carbonate segregations; violently effervescent; very strongly alkaline (pH 9.6); clear wavy boundary. (15 to 30 cm thick)

C1--86 to 109 cm; light gray (5Y 7/2) clay, olive (5Y 5/3) moist; many medium distinct brown (10YR 5/3) moist redox concentrations of iron; moderate coarse prismatic parting to moderate fine angular blocky structure; hard, friable, very sticky and very plastic; few very fine tubular and common very fine interstitial pores; violently effervescent; very strongly alkaline (pH 9.2); abrupt wavy boundary. (0 to 30 cm thick)

C2--109 to 152 cm; light gray (5Y 7/2) clay, olive (5Y 5/3) moist; moderate coarse prismatic parting to moderate fine angular blocky structure; very hard, firm, very sticky and very plastic; many coarse white (10YR 8/1) salt and gypsum crystals on prism faces; violently effervescent; very strongly alkaline (pH 9.2).

TYPE LOCATION: Eureka County, Nevada; 1,100 feet east and 2,050 feet south of the NW corner of sec. 16, T. 25 N., R. 53 E.; USGS Telegraph Canyon 7.5 minute topographic quadrangle; latitude 40 degrees 2 minutes 57 seconds N and longitude 116 degrees 0 minutes 20 seconds W; WGS84 Decimal Degrees 40.0491667 latitude, -116.0061111 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry mainly in the summer and fall months, but are saturated at or near 90 cm during the early spring.
Mean annual soil temperature: 7 to 8 degrees C.
Mean summer soil temperature: 16 to 17 degrees C.
Depth to base of natric: 40 to 66 cm

Particle-size control section - Clay content: 35 to 50 percent.

A horizons
Value: 6 or 7 dry and 3 or 4 moist.
Chroma: 1 through 3.
Structure: Platy or granular structure
Consistence: soft or slightly hard.
Reaction: Moderately alkaline through very strongly alkaline.
Effervescence: Slightly effervescent through violently effervescent.

Bt horizons
Value: 6 or 7 dry and 4 through 6 moist.
Chroma: 2 or 3.
Consistence: Hard or very hard.
Texture: Silty clay or silty clay loam.
Reaction: Moderately alkaline through very strongly alkaline.
Effervescence: slightly effervescent to violently effervescent.
Sodicity (SAR): 13 to 45.
Salinity (EC): 2 to 4.

C horizon
Texture: Silty clay loam, silty clay, or clay.
Sodicity (SAR): 13 to 45.
Salinity (EC): 2 to 4.

COMPETING SERIES: There are no other series in this family.

GEOGRAPHIC SETTING: Sader soils are on terraces and lake plains at elevations of 1,740 to 1,800 meters. Slopes are 0 to 2 percent. The soils formed in lacustrine materials derived from mixed rocks. The climate is cool, semiarid having mean annual precipitation of 200 to 250 mm that comes primarily as snow. The mean annual temperature is 6 to 8 degrees C.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Nayped and Dianev soils. Dianev soils lack a natric horizon. Nayped soils have cambic horizons, more than 20 percent durinodes in the C horizons and are moderately coarse textured.

DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow runoff or ponded; slow or very slow permeability; moderately low saturated hydraulic conductivity.

USE AND VEGETATION: Primarily livestock grazing; some areas are flooded and grass hay is harvested. Vegetation is principally rubber rabbitbrush, black greasewood, basin wildrye, big sagebrush, and bottlebrush squirreltail.

DISTRIBUTION AND EXTENT: Central Nevada. Sader soils are inextensive with about 6,300 acres. Similar soils are known to occur along the Humboldt River in northeastern Nevada. MLRA 28B.

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

SERIES ESTABLISHED: Eureka County (Diamond Valley Area) Nevada, 1971.

REMARKS: Sader soils were formerly classified as Solonetz Soils.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the surface to 13 cm (A1 and A2 horizons).
Natric horizon - The zone from about 13 to 64 cm (Btnq, Btn1 and Btn2 horizons).
Durinodes - The zone from 13 to 25 cm (The Btnq horizon).
Redox concentrations - The zone from about 86 to 109 cm (C1 horizon).
Particle-size control section - The zone from 13 to about 63 cm (Bnq, Btn1 and a portion of the Btn2 horizons).

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National Cooperative Soil Survey
U.S.A.