LOCATION BOOFUSS                 NV

Established Series
Rev. SEG/PWB/RLB/JBF
11/2016

BOOFUSS SERIES

The Boofuss series consists of very deep, poorly drained soils that formed in alluvium derived from mixed rocks and lacustrine sediments. Boofuss soils are on floodplains, alluvial flats and lake plains. Slopes are 0 to 2 percent. Mean annual precipitation is about 230 mm and mean annual temperature is about 8 degrees C.

TAXONOMIC CLASS: Clayey over loamy, smectitic over mixed, superactive, calcareous, mesic Typic Halaquepts

TYPICAL PEDON: Boofuss silty clay--rangeland. (Colors are for dry soil unless otherwise noted.)

A--0 to 13 cm; light gray (10YR 7/2) silty clay, light gray (10YR 7/1) moist; moderate fine subangular blocky structure; slightly hard, friable, very sticky and very plastic; few very fine and fine roots; common fine tubular pores; strongly effervescent; very strongly alkaline (pH 9.2); abrupt smooth boundary. (10 to 25 cm thick)

Bk1--13 to 25 cm; light gray (10YR 7/2) silty clay, light gray (10YR 7/1) moist; moderate medium prismatic parting to moderate very fine angular blocky structure; slightly hard, friable, very sticky and very plastic; many very fine roots; many fine tubular pores; strongly effervescent; very strongly alkaline (pH 9.0); clear smooth boundary. (0 to 30 cm thick)

Bk2--25 to 51 cm; light gray (10YR 7/2) silty clay, light gray (10YR 7/1) moist; few fine faint brown (10YR 5/3) redox concentrations; moderate medium prismatic parting to moderate fine angular blocky structure; hard, firm, very sticky and very plastic; common fine and medium roots; common fine and medium tubular pores; strongly effervescent; strongly alkaline (pH 8.8); clear smooth boundary. (0 to 50 cm thick)

2Ckq1--51 to 94 cm; light gray (2.5Y 7/2) fine sandy loam, light brownish gray (2.5Y 6/2) moist; many fine and medium distinct olive brown (2.5Y 4/4) redox concentrations; moderate medium prismatic parting to moderate fine angular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few medium roots; few fine and medium tubular and interstitial pores; common fine rounded silica nodules; few fine and medium soft segregated carbonate pockets; few thin soft carbonate coatings in root channels; strongly effervescent; strongly alkaline (pH 8.6); gradual smooth boundary. (25 to 64 cm thick)

2Ckq2--94 to 152 cm; light gray (2.5Y 7/2) fine sandy loam, light brownish gray (2.5Y 6/2) moist; many fine and medium distinct olive brown (2.5Y 4/4) redox concentrations; moderate medium prismatic parting to moderate fine angular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; few medium roots; few fine tubular and interstitial pores; common fine and medium round silica nodules; common fine soft segregated carbonate pockets; strongly effervescent; strongly alkaline (pH 8.6).

TYPE LOCATION: White Pine County, Nevada; in Steptoe Valley, approximately 425 feet west and 200 feet south of the northeast corner of section 1, T. 23 N., R. 63 E.; USGS Cherry Creek Station 7.5 minute quadrangle; latitude 39 degrees 53 minutes 55 seconds N and longitude 114 degrees 47 minutes 36 seconds W; WGS84 Decimal Degrees 39.8986111 latitude, -114.7933333 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: A and B horizons are dry in mid-summer to early fall, underlying material is moist year round. The soil is saturated at depths of 30 to 76 cm most years from January to June.
Mean annual soil temperature: 8 to 11 degrees C.
Depth to a contrasting layer: 38 to 89 cm.

Particle-size control section - Clay content: Average 35 to 50 percent in the upper part and 8 to 15 percent in the lower part.

A horizon
Hue: 10YR, 2.5Y or 5Y.
Value: 7 or 8 dry, 6 or 7 moist.
Chroma: 1 through 3.
Reaction: Strongly alkaline or very strongly alkaline.
Sodicity (SAR): 50 to 80.
Salinity (EC): 16 to 32.

Bk horizons
Hue: 10YR, 2.5Y or 5Y.
Value: 7 or 8 dry, 6 or 7 moist.
Chroma: 1 or 2.
Clay content: 35 to 50 percent.
Texture: Stratified silty clay loam, silty clay and clay.
Structure: Medium or coarse prismatic.
Consistence: Slightly hard or hard dry, friable to firm moist.
Reaction: Strongly alkaline or very strongly alkaline.
Sodicity (SAR): 50 to 80.
Salinity (EC): 16 to 32.

2Ckg horizon
Hue: 10YR or 2.5Y.
Value: 7 or 8 dry, 6 through 8 moist.
Clay content: 8 to 15 percent.
Texture: Stratified fine sandy loam, loam and silt loam.
Structure: Platy, prismatic, subangular blocky or massive.
Consistence: Very friable or friable, moist.
Sodicity (SAR): 10 to 30.
Salinity (EC): 0 to 2.
Other features: Some pedons have thin strata of coarse sand or sand below a depth of 127 cm. Few to common silica nodules.

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING: Boofuss soils are on alluvial flats, floodplains and lake plains. These soils formed in alluvium from mixed rock sources and lacustrine sediments. Slopes are 0 to 2 percent. Elevations are 1,710 to 1,890 meters. The climate is cool, semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 200 to 250 mm; mean annual temperature is 7 to 9 degrees C, and the frost-free season is 100 to 120 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are Duffer and Equis series. Duffer soils have a fine-silty particle-size control section and are carbonatic. Equis soils have a fine particle-size control section and are carbonatic.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Poorly drained; slow runoff; moderately low saturated hydraulic conductivity.

USE AND VEGETATION: Livestock grazing and wildlife habitat. The present vegetation is mainly black greasewood and inland saltgrass.

DISTRIBUTION AND EXTENT: East-central Nevada. These soils are not extensive. MLRA 28B.

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

SERIES ESTABLISHED: White Pine County, Nevada, West Part, 1990.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 18 cm. (A and part of Bk horizons).
Secondary carbonates - The zone from 51 to 152 cm (The 2Ckq1 and 2Ckq2 horizons).
Redoximorphic concentrations - The zone from 51 to 152 cm (The 2Ckq1 and 2Ckq2 horizons).
Seasonal water table - Within 76 cm.
Sodium absorption ratio - Greater than 50 in the upper 50 cm decreasing with depth.
Particle-size control section - The zone from 25 to 100 cm (Bk2, 2Ckq1 and part of 2Ckq2 horizons.

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National Cooperative Soil Survey
U.S.A.