LOCATION REDNIK                  NV

Established Series
Rev. OWB/CEJ/JVC/JBF
05/2016

REDNIK SERIES

The Rednik series consists of very deep, well drained soils that formed in alluvium derived from mixed rocks. Rednik soils are on fan remnants. Slopes are 2 to 75 percent. The mean annual precipitation is about 150 mm and the mean annual temperature is about 9 degrees C.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Typic Haplargids

TYPICAL PEDON: Rednik very gravelly sandy loam--rangeland. (Colors are for dry soil unless otherwise noted.)

A1--0 to 3 cm; light brownish gray (10YR 6/2) very gravelly sandy loam, brown (10YR 4/3) moist; moderate fine and medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; many very fine and fine interstitial pores; 30 percent gravel and 5 percent cobbles and stones; moderately alkaline (pH 8.3); abrupt smooth boundary. (1 to 10 cm thick)

A2--3 to 10 cm; pale brown (10YR 6/3) gravelly sandy loam, dark yellowish brown (10YR 4/4) moist; weak medium and coarse subangular blocky structure parting to weak thin platy; slightly hard, very friable, nonsticky and nonplastic; common very fine through medium roots; common very fine and fine tubular pores; 30 percent gravel and 5 percent cobbles and stones; slightly alkaline (pH 7.6); clear smooth boundary. (0 to 20 cm thick)

AB--10 to 15 cm; brown (10YR 5/3) gravelly sandy loam, dark yellowish brown (10YR 4/4) moist; moderate fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine, fine, and medium tubular pores; 15 percent gravel and 5 percent cobbles; strongly effervescent; strongly alkaline (pH 8.8); clear smooth boundary. (0 to 15 cm thick)

Btn--15 to 51 cm; brown (10YR 5/3) extremely gravelly sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate fine and medium angular blocky structure; hard, friable, moderately sticky and moderately plastic; common very fine and fine roots; common very fine through medium tubular pores; common faint and distinct clay films on faces of peds and lining pores; 55 percent gravel and 5 percent cobbles; strongly effervescent; strongly alkaline (pH 8.8); abrupt wavy boundary. (13 to 56 cm thick)

Bk1--51 to 64 cm; pinkish gray (7.5YR 6/2) gravelly sandy loam, brown (10YR 5/3) moist; massive; hard, very friable, nonsticky and nonplastic; common very fine, fine and medium roots; many very fine and fine interstitial pores and common fine tubular pores; 25 percent gravel; violently effervescent; strongly alkaline (pH 9.0); clear wavy boundary. (5 to 25 cm thick)

Bk2--64 to 86 cm; pinkish gray (7.5YR 6/2) very gravelly sandy loam, brown (10YR 5/3) moist; massive; hard, very friable, nonsticky and nonplastic; common very fine, fine and medium roots; many very fine and fine interstitial pores and common fine tubular pores; 50 percent gravel; violently effervescent; strongly alkaline (pH 8.8); clear wavy boundary. (15 to 38 cm thick)

Bk3--86 to 122 cm; pinkish gray (7.5YR 6/2) gravelly sandy loam, brown (10YR 5/3) moist; massive; hard, very friable, nonsticky and nonplastic; common very fine and fine roots; many very fine and fine interstitial pores, and common fine tubular pores; 30 percent gravel; violently effervescent; strongly alkaline (pH 8.8); clear wavy boundary. (18 to 50 cm thick)

Bk4--122 to 145 cm; pinkish gray (7.5YR 6/2) very gravelly sandy loam, brown (10YR 5/3) moist; massive; hard, very friable, nonsticky and nonplastic; few very fine and fine roots; many very fine and fine interstitial pores and few fine tubular pores; 45 percent gravel; violently effervescent; very strongly alkaline (pH 9.2); clear wavy boundary. (0 to 30 cm thick)

C--145 to 165 cm; pinkish gray (7.5YR 6/2) very gravelly sandy loam, brown (10YR 5/3) moist; massive; hard, very friable, nonsticky and nonplastic; many very fine and fine interstitial pores; 40 percent gravel, 5 percent cobbles; violently effervescent: very strongly alkaline (pH 9.2).

TYPE LOCATION: Washoe County, Nevada, about 23 miles north of Reno in the north end of Warm Springs Valley; 50 feet west and 1,300 feet south of the northeast corner of section 13, T. 23 N., R. 20 E.; USGS Fraser Flat, NV 7.5 minute topographic quadrangle; latitude 39 degrees 51 minutes 52 seconds N and longitude 119 degrees 40 minutes 39 seconds W; WGS84 Decimal Degrees 39.8644444 latitude, -119.677500 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry; moist for short periods in the winter and spring, dry from summer to mid-fall; typic aridic soil moisture regime.
Mean annual soil temperature: 8 to 12 degrees C.
Depth to base of argillic horizon: 38 to 76 cm.

Particle-size control section - Clay content: Averages 18 to 27 percent.
Rock fragments: 35 to 75 percent, mainly gravel. Lithology of fragments is mixed.

A horizons
Hue: 10YR or 2.5Y.
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 through 4, dry or moist.
Reaction: Slightly alkaline through strongly alkaline.

Btn and Btnk horizons
Value: 5 or 6 dry, 4 or 5 moist.
Chroma: 3 or 4, dry or moist
Texture (less than 2 mm fraction): Sandy clay loam, sandy loam, or loam.
Structure: Moderate or strong, medium or fine, angular or subangular blocky structure.
Reaction: Moderately alkaline or strongly alkaline.
Salinity (EC): 4 to 8 mmhos/cm.
Sodicity (SAR): 13 to 30.
Effervescence: Strongly effervescent or violently effervescent.
Calcium carbonate equivalent: 1 to 5 percent.

Bk and C horizons
Hue: 10YR or 7.5YR.
Value: 6 through 8 dry, and 4 through 6 moist.
Chroma: 2 through 4, dry or moist.
Texture (less than 2 mm fraction): Fine sandy loam, sandy loam, loamy sand, sand, or loamy coarse sand.
Rock fragments: 35 to 75 percent, mainly gravel.
Reaction: Strongly alkaline or very strongly alkaline.
Sodicity (SAR): 5 to 30.
Effervescence: Strongly effervescent or violently effervescent.
Calcium carbonate equivalent: 1 to 5 percent.

COMPETING SERIES: These are the Fireball, Jurado, Minnye, Perazzo, Preatorson, Stonell, and Zaba series.

Fireball soils have lithic contacts between 100 and 150 cm and have sodium adsorption ratios of less than 13 in the argillic horizon. Jurado, Minnye and Stonell soils have sodium adsorption ratios of less than 13 in the argillic horizon and are intermittently moist for 10 to 20 days cumulative during summer months. Perazzo and Preatorson soils have sodium adsorption ratios of less than 13 in the argillic horizon. Zaba soils have argillic horizons consisting of lamellae, have less than 18 percent clay in the particle-size control section, and are intermittently moist for 10 to 20 days cumulative during summer months.

GEOGRAPHIC SETTING: Rednik soils are on fan remnants. They formed in alluvium derived from mixed rocks. Slopes are 2 to 75 percent. Elevations range from 1,150 to 1,645 meters. The climate is arid with cool, moist winters and hot, dry summers. The mean annual precipitation is 130 to 175 mm, the mean annual temperature is 8 to 11 degrees C, and the frost-free period is 100 to 120 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aladshi, Bluewing, and Mellor soils. Aladshi soils are fine-loamy, have argillic horizons and horizons with weak silica cementation, and have an aridic moisture regime bordering on xeric. Bluewing soils are sandy-skeletal and do not have argillic horizons. Mellor soils are fine-silty, have natric horizons, and have an aridic moisture regime bordering on xeric.

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

USE AND VEGETATION: These soils are used for rangeland, urban development, and wildlife habitat. The vegetation is mainly bud sagebrush, shadscale, bottlebrush squirreltail, and cheatgrass.

DISTRIBUTION AND EXTENT: Western Nevada. These soils are moderately extensive. MLRAs 27, 24, and 26.

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

SERIES ESTABLISHED: Washoe County, Nevada (South Part), 1980.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 15 cm (A1, A2, and AB horizons).
Argillic horizon - The zone from 15 to 51 cm (Btn horizon).
Particle-size control section - The zone from 15 to 51 cm (Btn horizon).

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National Cooperative Soil Survey
U.S.A.