LOCATION HAYBOURNE NV+CA UTEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Xeric Haplocambids
TYPICAL PEDON: Haybourne loam--rangeland. (Colors are for dry soil unless otherwise noted.)
A1--0 to 3 inches; pale brown (10YR 6/3) loam, dark brown (10YR 3/3) moist; moderate medium and coarse platy structure; soft, friable, slightly sticky and nonplastic; few very fine roots; many fine and many medium vesicular pores; neutral (pH 6.6); abrupt smooth boundary. (1 to 4 inches thick)
A2--3 to 6 inches; brown (10YR 5/3) loam, dark brown (10YR 3/3) moist; weak medium platy structure; soft, friable, slightly sticky and nonplastic; common very fine and common fine roots; many very fine and many fine vesicular pores; neutral (pH 6.7); abrupt smooth boundary. (0 to 6 inches thick)
Bw1--6 to 15 inches; brown (10YR 5/3) sandy loam, brown (10YR 4/3) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and nonplastic; common fine and common very fine roots; few fine tubular, and many very fine and fine interstitial pores; neutral (pH 6.7); clear smooth boundary. (6 to 10 inches thick)
Bw2--15 to 25 inches; brown (10YR 5/3) sandy loam, brown (10YR 4/3) moist; weak fine and medium subangular blocky structure; hard, friable, slightly sticky and nonplastic; common very fine and common fine roots; many fine and very fine interstitial pores; common faint clay bridges between sand grains; neutral (pH 6.7); clear smooth boundary. (9 to 12 inches thick)
C1--25 to 34 inches; brown (10YR 5/3) loamy sand, brown (10YR 4/3) moist; massive; slightly hard, very friable, nonsticky and nonplastic; few fine roots; many very fine and many fine interstitial pores; neutral (pH 7.0); clear smooth boundary. (9 to 14 inches thick)
C2--34 to 42 inches; pale brown (10YR 6/3) loamy sand, brown (10YR 4/3) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine roots; many very fine and many fine interstitial pores; neutral (pH 7.0); clear smooth boundary. (6 to 25 inches thick)
C3--42 to 62 inches; light brownish gray (10YR 6/2) coarse sand, dark grayish brown (10YR 4/2) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; many fine and very fine interstitial pores; few spots of slight effervescence; neutral (pH 7.2)
TYPE LOCATION: Douglas County, Nevada; in Carson Valley about 2 miles southwest of Hot Springs Mountain; approximately 600 feet west of the northeast corner of section 33, T. 14 N., R. 20 E.; USGS McTarnahan Hill 7.5 minute topographic quadrangle; 39 degrees 02 minutes 28 seconds north latitude and 119 degrees 44 minutes 03 seconds west longitude, NAD27.
RANGE IN CHARACTERISTICS:
Soil moisture: Usually moist in the moisture control section in winter and spring, dry in summer and fall; Aridic moisture regime bordering on xeric.
Mean annual soil temperature: 48 to 53 degrees F.
Depth to base of cambic horizon: 18 to 32 inches.
Particle-size control section (weighted average):
Clay content: 10 to 18 percent.
Rock fragments: 0 to 20 percent, mainly fine gravel, mainly granitic rocks such as granite or granodiorite.
A horizon:
Value: 5 or 6 dry, 3 or 4 moist.
Chroma: 2 or 3, dry or moist.
Reaction: Neutral or slightly alkaline.
Structure: Granular, subangular blocky, or platy.
Bw horizon:
Hue: 10YR or 7.5YR.
Value: 5 or 6 dry, 3 or 4 moist.
Chroma: 3 or 4, dry or moist
Texture: Sandy loam, gravelly sandy loam, or fine sandy loam.
Clay content: 8 to 18 percent.
Rock fragments: 0 to 20 percent, mainly fine gravel.
Reaction: Neutral to moderately alkaline.
Salinity (EC): 0 to 2 mmhos/cm.
C horizons:
Value: 5 to 7 dry, 3 to 5 moist.
Chroma: 2 to 4, dry or moist.
Texture: Stratified gravelly coarse sand to fine sandy loam.
Clay content: 5 to 12 percent.
Rock fragments: 0 to 15 percent, mainly fine gravel.
Reaction: Neutral to moderately alkaline.
Salinity (EC): 0 to 2 mmhos/cm.
Other features: Some pedons are slightly effervescent below a depth of 30 inches, where influenced by calcareous parent material; some pedons have stratified very gravelly fine sand and cobbly sand subhorizons below a depth of 40 inches.
COMPETING SERIES: These are the Bijorja, Chedehap, Clems, Drewsey, Heist, Irrigon, McClenden, Prosser, Rebel, Royal, Scooteney, Vining, and Wiehl series.
Bijorja, Irrigon, and Wiehl soils are moderately deep to paralithic contacts. Chedehap, Drewsey, McClenden, Royal, and Scooteney soils have horizons with identifiable secondary carbonates and are calcareous in a major part of the control section. Clems soils do not have sandy textures within a depth of 40 inches. Heist and Rebel soils are calcareous in a major part of the control section and do not have sandy textures within a depth of 40 inches. Prosser and Vining soils are moderately deep to lithic contacts.
GEOGRAPHIC SETTING: Haybourne soils are on alluvial fans, fan remnants, ballenas, lake terraces, fan skirts, and fan aprons. These soils formed in alluvium derived from granitic rocks or from mixed sources. Slopes are 0 to 30 percent. Elevations range from 4,500 to 6,000 feet. The climate is semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 8 to 12 inches, the mean annual temperature is 46 to 52 degrees F., and the frost-free period is 80 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Gardnerville, Reno, and Toll soils. Gardnerville soils are fine and have natric horizons. Reno soils are fine and moderately deep to duripans. Toll soils are sandy.
DRAINAGE AND PERMEABILITY: Well drained; very low to medium surface runoff; moderately rapid permeability (high saturated hydraulic conductivity).
USE AND VEGETATION: Haybourne soils are used for irrigated cropland, rangeland, recreation, and urban development. The vegetation is mainly Wyoming big sagebrush, Douglas rabbitbrush, Nevada ephedra, Anderson's peachbrush, bottlebrush squirreltail, desert needlegrass, and Indian ricegrass.
DISTRIBUTION AND EXTENT: Western and northeastern Nevada and eastern California. It also occurs in minor areas of western Utah. These soils are moderately extensive. The series concept and main acreage occurs in MLRA 26. Other acres of this series are mapped in MLRAs 25, 27, and 28A.
MLRA OFFICE RESPONSIBLE: Reno, Nevada.
SERIES ESTABLISHED: Douglas County, Nevada, 1974.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (Bw2 and C1, and parts of the Bw1 and C2 horizons)
Ochric epipedon: The zone from 0 to 7 inches. (A1 and A2 horizons and part of the Bw1 horizon)
Cambic horizon: The zone from 6 to 25 inches. (Bw1 and Bw2 horizons)