LOCATION GODECKE                 NV

Established Series
Rev. WED-ELS-JVC-JBF
03/2017

GODECKE SERIES

The Godecke series consists of very deep, moderately well drained soils that formed in alluvium derived from mixed rocks. Godecke soils are on stream terraces. Slopes are 0 to 2 percent. The mean annual precipitation is about 230 mm and the mean annual temperature is about 9 degrees C.

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

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

A1--0 to 5 cm; light brownish gray (10YR 6/2) fine sandy loam, dark grayish brown (10YR 4/2) moist; weak thick platy structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine roots; many very fine and fine vesicular pores; strongly alkaline (pH 8.8); abrupt wavy boundary. (3 to 8 cm thick)

A2--5 to 20 cm; pale brown (10YR 6/3) fine sandy loam, brown (10YR 4/3) moist; massive; hard, friable, slightly sticky and nonplastic; common very fine, fine, and medium roots; many very fine tubular pores; strongly alkaline (pH 8.8); clear smooth boundary. (10 to 18 cm thick)

Btnk--20 to 46 cm; pale brown (10YR 6/3) clay loam, brown (10YR 5/3) moist; weak medium prismatic structure; hard, friable, moderately sticky and moderately plastic; common very fine and few medium roots between peds; many very fine tubular pores; common distinct clay films on faces of peds and as bridges between sand grains; secondary carbonates segregated as common filaments; slightly effervescent in matrix and strongly effervescent filaments; strongly alkaline (pH 9.0); abrupt smooth boundary. (20 to 30 cm thick)

Bk--46 to 61 cm; pale brown (10YR 6/3) coarse sandy loam, brown (10YR 5/3) moist; massive; very hard, friable, slightly sticky and nonplastic; few very fine roots; common very fine tubular, and many very fine and fine interstitial pores; secondary carbonates segregated as common coarse very pale brown (10YR 8/3) masses; strongly effervescent; strongly alkaline (pH 9.0); gradual smooth boundary. (13 to 20 cm thick)

Bqk1--61 to 91 cm; pale brown (10YR 6/3) fine sandy loam, grayish brown (10YR 5/2) moist; massive; slightly hard, friable, slightly sticky and nonplastic; few very fine roots; common very fine and few fine tubular pores; 20 percent light gray (10YR 7/2) extremely hard and very firm weakly cemented durinodes, 10 to 50 mm in diameter; secondary carbonates segregated as common fine coats on durinodes; strongly effervescent; strongly alkaline (pH 9.0); abrupt wavy boundary. (20 to 36 cm thick)

Bqk2--91 to 140 cm; pale yellow (5Y 8/3) loamy fine sand, olive (5Y 5/3) moist; moderate medium and thick platy structure; very hard, firm, nonsticky and nonplastic; no roots; few fine tubular pores; 40 percent extremely hard and very firm planar weakly cemented durinodes; secondary carbonates segregated as common medium and coarse light olive gray (5Y 6/2) masses; few fine and medium prominent black (10YR 2/1) moist, masses of manganese accumulation; strongly alkaline (pH 8.8); abrupt wavy boundary. (38 to 64 cm thick)

C--140 to 152 cm; pale yellow (5Y 7/3) very fine sandy loam, olive (5Y 5/3) moist; strong thin platy structure; hard, firm, nonsticky and nonplastic; few fine tubular pores; common fine prominent black (N 2.5/) moist, masses of manganese accumulation; moderately alkaline (pH 8.4); abrupt smooth boundary. (10 to 20 cm thick)

C2--152 to 173 cm; pale olive (5Y 6/3) coarse sandy loam, olive (5Y 4/3) moist; massive; hard, friable, nonsticky and nonplastic; many very fine interstitial pores; few fine distinct black (5Y 2.5/1) moist, masses of manganese accumulation; moderately alkaline (pH 8.2).

TYPE LOCATION: Douglas County, Nevada; in Carson Valley about 1.5 miles east of Ambrosetti Pond; 2,050 feet west and 50 feet south of the northeast corner of section 32, T. 14 N., R. 20 E.; USGS Genoa 7.5 minute topographic quadrangle; latitude 39 degrees 02 minutes 28.5 seconds N and longitude 119 degrees 45 minutes 33 seconds W; WGS84 Decimal Degrees 39.0411389 latitude, -119.7590556 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist in the moisture control section in winter and spring, dry in summer and fall; aridic moisture regime that borders on xeric.
Mean annual soil temperature: 9 to 12 degrees C.
Depth to horizons with identifiable secondary carbonates: 13 to 20 cm.
Depth to base of natric horizon: 36 to 50 cm.
Depth to horizons with durinodes: 50 to 76 cm.

Particle-size control section control section - Clay content: 31 to 35 percent.

A horizon
Hue: 10YR or 2.5Y.
Value: 5 or 6 dry.
Chroma: 2 or 3, dry or moist.
Reaction: Moderately alkaline to very strongly alkaline (up to pH 9.6).
Salinity (EC): 16 to 32 mmhos/cm.
Sodicity (SAR): 46 to 90.

Btnk horizon
Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 3 through 5 moist.
Chroma: 3 or 4, dry or moist.
Texture: Clay loam or sandy clay loam.
Clay content: 31 to 35 percent.
Structure: Weak to strong prismatic.
Reaction: Moderately alkaline to very strongly alkaline (up to pH 9.6).
Salinity (EC): 8 to 16 mmhos/cm.
Sodicity (SAR): 31 to 45.
Identifiable secondary carbonates: Occurs as few or common filaments or masses.
Calcium carbonate equivalent: 1 to 3 percent.
Other features: In some pedons 20 to 90 percent of ped faces are covered with black coats (presumably organic matter).

Bk horizon
Hue: 10YR or 2.5Y.
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 through 4, dry or moist.
Texture: Coarse sandy loam, sandy loam, or fine sandy loam.
Clay content: 8 to 18 percent.
Reaction: Moderately alkaline to very strongly alkaline (up to pH 9.6).
Salinity (EC): 4 to 8 mmhos/cm.
Sodicity (SAR): 13 to 30.
Effervescence: Strongly effervescent or violently effervescent.
Identifiable secondary carbonates: Occurs as few or common masses.
Calcium carbonate equivalent: 1 to 5 percent.

Bqk horizons
Hue: 10YR through 5Y.
Value: 6 through 8 dry, 4 through 6 moist.
Chroma: 2 through 4, dry or moist.
Texture: Fine sandy loam, very fine sandy loam, or loamy fine sand.
Clay content: 5 to 15 percent.
Reaction: Moderately alkaline or strongly alkaline.
Salinity (EC): 4 to 8 mmhos/cm.
Sodicity (SAR): 13 to 30.
Durinodes: 20 to 60 percent weakly cemented planar or irregularly shaped durinodes.
Effervescence: Strongly effervescent or violently effervescent.
Identifiable secondary carbonates: Occurs as few or common masses or coats on durinodes.
Calcium carbonate equivalent: 1 to 5 percent.
Redoximorphic features: Redox concentrations occur in some subhorizons as few to many masses of manganese and/or iron accumulation. Redox depletions are present in some pedons as zones of iron depletion.

C horizons
Hue: 10YR through 5Y.
Value: 5 through 8 dry, 4 or 5 moist.
Chroma: 2 through 4, dry or moist.
Texture: Stratified loamy sand to silt loam; some pedons have strata of sandy clay loam, clay, or silty clay.
Clay content: 5 to 15 percent.
Reaction: Moderately alkaline or strongly alkaline.
Redoximorphic features: Redox concentrations occur as few to many masses of manganese and/or iron accumulation. Redox depletions are present in some pedons as zones of iron depletion.

COMPETING SERIES: These are the Bobert, Geysen, and Pokergap series.

Bobert soils average 25 to 30 percent clay in the particle-size control section, have natric horizons with sodium adsorption ratios of 50 to 200, and have mean annual soil temperature of 12 to 13 degrees C. Geysen soils do not have endosaturation or redoximorphic features within 152 cm of the soil surface. Pokergap soils have mean annual soil temperature of 12 to 13 degrees C., do not have endosaturation or redoximorphic features within 152 cm of the soil surface, and have subhorizons below the particle-size control section with more than 35 percent rock fragments.

GEOGRAPHIC SETTING: Godecke soils are on low stream terraces. Microtopography is planar to slightly concave. These soils formed in alluvium derived from mixed rocks. Slopes are 0 to 2 percent. Elevations range from 1,420 to 1,450 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 11 degrees C, and the frost-free period is 90 to 110 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Gardnerville, Fettic, and Toll soils. Gardnerville soils are fine. Fettic soils are fine-silty, have mollic epipedons, and do not have horizons with durinodes. Toll soils are sandy, do not have diagnostic subsurface horizons or features, and do not have endosaturation within 150 cm of the soil surface.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained; high surface runoff; moderately low saturated hydraulic conductivity. Endosaturation is present with an apparent seasonal high water table between 100 and 150 cm (deep free water occurrence class) from December through May. Cumulative annual duration classes are Common or Persistent. These soils are susceptible to rare flooding for very brief periods year-round.

USE AND VEGETATION: Godecke soils are used for rangeland. The vegetation is mainly rubber rabbitbrush, black greasewood, and inland saltgrass with scattered spiny hopsage, fourwing saltbush, basin big sagebrush, and basin wildrye.

DISTRIBUTION AND EXTENT: Western Nevada. These soils are not extensive. MLRA 26.

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

SERIES ESTABLISHED: Douglas County (Carson Valley Area), Nevada, 1975.

REMARKS: This revision updates the taxonomic subgroup from Aquic to Durinodic Xeric Natrargids. Godecke soils in the soil survey of Washoe County, South Part, Nevada, have endosaturation within 100 cm and need correlation to another series.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 20 cm (A1 and A2 horizons).
Natric horizon - The zone from 20 to 46 cm (Btnk horizon).
Durinodes - The zone from 61 to 140 cm (Bqk1 and Bqk2 horizons).
Duric feature - The zone from 61 to 102 cm (Bqk1 horizon and part of the Bqk2 horizon).
Endosaturation feature - The condition of ground water with an upper boundary between 100 and 150 cm at certain times during normal years (C1 and C2 horizons and part of the Bqk2 horizon).
Particle size control section - The zone from 20 to 46 cm (Btnk horizon).

ADDITIONAL DATA: User Pedon ID: 2006NV005028.

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National Cooperative Soil Survey
U.S.A.