LOCATION SAGOUSPE NV

Established Series
Rev. ELS-WED-JVC
05/2016

SAGOUSPE SERIES

The Sagouspe series consists of very deep, moderately well drained soils that formed in alluvium derived from mixed rocks. Sagouspe soils are on flood plains and low stream terraces. Slopes are 0 to 2 percent. The mean annual precipitation is about 125 mm and the mean annual temperature is about 12 degrees C.

TAXONOMIC CLASS: Sandy, mixed, mesic Oxyaquic Torrifluvents

TYPICAL PEDON: Sagouspe loamy sand--irrigated cropland. (Colors are for dry soil unless otherwise noted.)

Ap--0 to 15 cm; light brownish gray (10YR 6/2) loamy sand, dark grayish brown (10YR 4/2) moist; massive; soft, friable, nonsticky and nonplastic; common very fine, few fine, and few coarse roots; many very fine and many fine interstitial pores; few medium faint very dark gray (10YR 3/1) moist masses of manganese accumulation; slightly alkaline (pH 7.4); clear smooth boundary. (10 to 20 cm thick)

C--15 to 53 cm; light brownish gray (10YR 6/2) loamy sand, dark grayish brown (10YR 4/2) moist; massive; soft, very friable, nonsticky, nonplastic; common very fine and medium roots; many very fine and many fine interstitial pores; few fine prominent strong brown (7.5YR 5/6) moist masses of iron accumulation; slightly effervescent; moderately alkaline (pH 8.0); clear smooth boundary. (25 to 61 cm thick)

Ck1--53 to 74 cm; light brownish gray (10YR 6/2) loamy fine sand, dark grayish brown (10YR 4/2) moist; massive; slightly hard, very friable, nonsticky and nonplastic; common very fine and common fine roots; many very fine and many fine interstitial, and few very fine tubular pores; secondary carbonates segregated as few fine masses; slightly effervescent; common fine distinct dark reddish brown (5YR 3/2) and few medium distinct brown (7.5YR 4/4) moist masses of iron accumulation; moderately alkaline (pH 8.4); abrupt smooth boundary. (10 to 38 cm thick)

2Ck2--74 to 86 cm; light gray (10YR 7/2) silt loam, dark grayish brown (10YR 4/2) moist; massive; hard, friable, slightly sticky and slightly plastic; common very fine, common fine, and few medium roots; many very fine tubular pores; secondary carbonates segregated as common fine and medium masses; strongly effervescent; many fine distinct brown (7.5YR 4/4) and common fine distinct dark reddish brown (5YR 3/2) moist masses of iron accumulation and few medium distinct black (10YR 2/1) moist masses of manganese accumulation; strongly alkaline (pH 8.6); abrupt smooth boundary. (8 to 18 cm thick)

3C--86 to 109 cm; light gray (10YR 7/2) stratified sand and coarse sand, brown (10YR 4/3) and very dark grayish brown (10YR 3/2) moist; single grain; loose, nonsticky and nonplastic; common very fine andfine, and few medium roots; many very fine interstitial pores; common coarse distinct yellowish brown (10YR 5/6) moist masses of iron accumulation; moderately alkaline (pH 8.4); abrupt smooth boundary. (15 to 50 cm thick)

4Ck3--109 to 152 cm; light brownish gray (10YR 6/2) stratified silt loam, fine sandy loam, loamy fine sand, and silty clay loam, dark grayish brown (10YR 4/2) moist; massive; slightly hard, very friable, slightly sticky and slightly plastic; secondary carbonates segregated as few coarse and medium masses and concretions; violently effervescent; many medium prominent reddish brown (2.5YR 4/4) and few fine prominent strong brown (7.5YR 5/8) moist masses of iron accumulation, and few coarse faint very dark gray (10YR 3/1) moist zones of iron depletion; strongly alkaline (pH 8.6).

TYPE LOCATION: Churchill County, Nevada; in the Lahontan Valley about one mile south of Fallon; approximately 1,780 feet east and 660 feet south of the northwest corner of section 6, T. 18 N., R. 29 E.; USGS Fallon 7.5 minute topographic quadrangle; latitude 39 degrees 27 minutes 30.7 seconds N and longitude 118 degrees 46 minutes 32.6 seconds W; WGS84 Decimal Degrees 39.4587222 latitude, -118.775556 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry unless irrigated; under natural conditions these soils are moist in the moisture control section in winter and early spring, dry in late spring through fall; aridic soil moisture regime that borders on xeric.
Mean annual soil temperature: 12 to 14 degrees C.
Depth to redoximorphic features: 8 to 100 cm.
Depth to horizons with secondary carbonates: 50 to 150 cm.
Reaction: Neutral through strongly alkaline.
Salinity (EC): 0 to 16 mmhos/cm.
Sodicity (SAR): 0 to 12.
Calcium carbonate equivalent: 0 to 3 percent.

Particle-size control section - Clay content: Averages 0 to 10 percent;
Rock fragments: 0 to 15 percent.

Ap horizon
Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 4 or 5 moist.
Chroma: 2 or 3, dry or moist.

Ck and C horizons
Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 4 or 5 moist.
Chroma: 2 or 3, dry or moist.
Texture: Dominantly sand and loamy sand but contains thin strata and lenses of coarse sand through silt loam.
Effervescence: Noneffervescent to slightly effervescent in the coarse textured materials and slightly effervescent to violently effervescent in loamy textured materials.
Identifiable secondary carbonates: Occurs as masses, filaments, or concretions in some horizon(s).
Redoximorphic features: Redox concentrations occur as few to many masses of iron and/or manganese accumulation; some pedons have subhorizons with zones of iron depletion; some features are relict.

COMPETING SERIES: These are the Bebeevar, Bowington, Carwalker, Escawetter, and Labyrinth series.

Bebeevar and Labyrinth soils have an aridic (torric) moisture regime that borders on ustic and do not have horizons with identifiable secondary carbonates. Carwalker and Bowington soils have mean annual soil temperature of less than 12 degrees C. and do not have horizons with identifiable secondary carbonates. Escawetter do not have horizons with identifiable secondary carbonates.

GEOGRAPHIC SETTING: Sagouspe soils are on flood plains and stream terraces. These soils formed in alluvium derived from mixed sources. Slopes are 0 to 2 percent. Elevations range from 1,158 to 1,463 meters. The climate is arid with cool, moist winters and hot, dry summers. The mean annual precipitation is 100 to 200 mm, the mean annual soil temperature is 11 to 13 degrees C, and the frost-free period is 110 to 160 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Appian, Dithod, East Fork, Fallon, and Fernley soils. Appian soils are fine-loamy over sandy or sandy-skeletal and have natric horizons. Dithod soils are coarse-loamy and have mollic epipedons. East Fork soils are fine-loamy and have mollic epipedons. Fallon soils are coarse-loamy. Fernley soils are sandy and do not have loamy strata in the particle-size control section.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained; high saturated hydraulic conductivity. Endosaturation is present with an apparent seasonal high water table between 90 and 150 cm (moderately deep and deep free water occurrence classes) from February through August. Cumulative annual duration classes are Common or Persistent. These soils are susceptible to rare flooding year-round, occasional flooding for long periods from April through June, or frequent flooding for brief periods from May through September.

USE AND VEGETATION: Sagouspe soils are used for irrigated cropland, urban development, livestock grazing, and wildlife habitat. The principal crops are mainly alfalfa hay, corn, small grains, and pasture. The vegetation in rangeland is mainly black greasewood, rubber rabbitbrush, and inland saltgrass.

DISTRIBUTION AND EXTENT: Western Nevada. These soils are moderately extensive. MLRA 27.

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

SERIES ESTABLISHED: Churchill County (Fallon-Fernley Area), Nevada, 1971.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 18 cm (Ap and part of the C1 horizons).
Identifiable secondary carbonates - The zones from 53 to 86 cm and 109 to 152 cm (Ck1, 2Ck2, and 4Ck3 horizons).
Endosaturation feature - The condition of ground water with an upper boundary between 91 to 152 cm at certain times in normal years (parts of the 3C' and 4Ck3 horizons).
Particle-size control section - The zone from 25 to 100 cm (Ck1 and 2Ck2 horizons and parts of the C and 3C' horizons).

The revision of March 2000 restricted the series concept to the warmer, drier portion of the climatic range within MLRA 27 and updated the taxonomic subgroup from Aquic Xerofluvents to Oxyaquic Torrifluvents. Sagouspe soils previously correlated in MLRA 26, in Storey County and Washoe County, Nevada, may be within the range of the Carwalker series.

ADDITIONAL DATA: A pedon of Sagouspe has full characterization data by the Soil Survey Laboratory (SSL), Lincoln, NE as user pedon ID 99NV001001 (pedon # 00P0239).

National Cooperative Soil Survey
U.S.A.