LOCATION REBEL NVEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Xeric Haplocambids
TYPICAL PEDON: Rebel fine sandy loam--rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 4 inches; light brownish gray (2.5Y 6/2) fine sandy loam, very dark grayish brown (2.5Y 3/2) moist; moderate thick platy structure; slightly hard, friable, nonsticky and nonplastic; common fine and medium roots; few fine tubular and many fine and very fine vesicular pores; few mica flakes; neutral (pH 7.0); abrupt smooth boundary. (3 to 7 inches thick)
Bw--4 to 18 inches; light brownish gray (2.5Y 6/2) fine sandy loam, dark grayish brown (2.5Y 4/2) moist; weak fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common fine, medium and coarse roots; common fine and medium tubular pores; few mica flakes; neutral (pH 7.0); clear smooth boundary. (8 to 22 inches thick)
C1--18 to 35 inches; grayish brown (2.5Y 5/2) fine sandy loam, very dark grayish brown (2.5Y 3/2) moist; massive; slightly hard, very friable, nonsticky and nonplastic; common fine and medium roots; common fine and medium tubular pores; common mica flakes; 5 percent fine pebbles; slightly effervescent; slightly alkaline (pH 7.8); clear smooth boundary. (10 to 20 inches thick)
C2--35 to 60 inches; grayish brown (2.5Y 5/2) fine sandy loam, very dark grayish brown (2.5Y 3/2) moist; massive; slightly hard, very friable, nonsticky and nonplastic; common fine roots; common fine tubular pores; common mica flakes; 5 percent fine pebbles; strongly effervescent; moderately alkaline (pH 8.4).
TYPE LOCATION: Humboldt County, Nevada; about 2 miles west and 2.7 miles north of Orovada; 1,800 feet south and 1,800 feet west of the northeast corner of section 9, T. 43 N., R. 37 E.; USGS Orovada 7.5 minute topographic quadrangle; 41 degrees 37 minutes 19 seconds north latitude and 117 degrees 48 minutes 57 seconds west longitude, NAD 27.
RANGE IN CHARACTERISTICS:
Soil moisture - Usually dry, moist in winter and spring, dry summer and fall; aridic moisture regime that borders on xeric.
Soil temperature - 47 to 52 degrees F.
Depth to base of cambic horizon - 15 to 24 inches.
Depth to carbonates (non-secondary) - 15 to 24 inches.
Control section - Clay content: 10 to 18 percent; Sand content: 50 to 80 percent; Rock fragments: Averages 2 to 15 percent, mainly pebbles. Lithology of fragments is mixed; Mica content: 5 to 20 percent in coarse silt to fine sand fractions; Most pedons have few to common mica flakes in a major part of the particle-size control section.
A horizon - Value: 5 or 6 dry, 3 or 4 moist.
Reaction: Neutral or slightly alkaline.
Other features: Slightly effervescent in some pedons due to recharge from calcareous dust.
Bw horizon - Hue: 10YR or 2.5Y.
Value: 6 or 7 dry, 3 through 5 moist.
Chroma: 2 through 4, dry or moist.
Texture: Fine sandy loam, sandy loam, or loam.
Consistence: Soft to slightly hard, dry; friable or very friable, moist; nonsticky or slightly sticky and nonplastic or slightly plastic, wet.
Reaction: Neutral to moderately alkaline.
C horizons - Hue: 10YR or 2.5Y.
Value: 5 through 7 dry, 3 through 5 moist.
Chroma: 2 through 5 dry, 2 through 4 moist.
Texture: Fine sandy loam, sandy loam, or loam.
Consistence: Soft or slightly hard, dry; nonsticky or slightly sticky and nonplastic or slightly plastic, wet.
Rock fragments: Some pedons contain strata with up to 50 percent pebbles.
Consistence: Soft to slightly hard, dry; friable or very friable, moist; nonsticky or slightly sticky and nonplastic or slightly plastic, wet.
Reaction: Slightly alkaline to strongly alkaline.
Effervescence: Slightly effervescent to violently effervescent.
Calcium carbonate equivalent: 1 to 10 percent.
Other features: Subhorizons with texture of coarse sandy loam are common in some pedons. Some pedons have subhorizons with identifiable secondary carbonates below the cambic horizon.
COMPETING SERIES: These are the Drewsey, McClenden, Prosser, Royal, and Scooteney series. Potential competitors in similar families are the Adkins, Bijorda, Chedehap, Clems, Haybourne, Irrigon, Vining, and Wiehl series.
Adkins soils do not have mica and have identifiable secondary carbonates at depths of 24 to 43 inches. Bijorja, Irrigon, Prosser, Vining, and Wiehl soils have bedrock within 40 inches. Chedehap soils have horizons with texture of loamy coarse sand or coarse sand at depths of 25 to 40 inches. Clems and Haybourne soils do not have carbonates within 40 inches. Drewsey and Royal soils have horizons with identifiable secondary carbonates and do not have mica in the particle-size control section. McClenden soils have horizons with identifiable secondary carbonates and have less than 50 percent sand in the particle-size control section. Scooteney soils average 20 to 35 percent rock fragments in the particle-size control section.
GEOGRAPHIC SETTING: Rebel soils are on inset fans, fan remnants, fan skirts, and stream terraces. They formed in alluvium derived from mixed rocks. Slopes are 0 to 15 percent. Elevations range from 4,000 to 6,500 feet. The climate is semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 8 to 10 inches, the mean annual temperature is 45 to 52 degrees F., and the frost-free period is 100 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Davey, McConnel, and Orovada soils. Davey soils are sandy and have cambic horizons. McConnel soils are sandy-skeletal. Orovada soils are coarse-loamy, have cambic horizons, and have Bq horizons containing durinodes in a friable matrix.
DRAINAGE AND PERMEABILITY: Well drained; very low or low surface runoff; moderately rapid permeability.
USE AND VEGETATION: Rebel soils are used for livestock grazing, irrigated cropland, and wildlife habitat. Alfalfa is the principal crop. The present rangeland vegetation is mainly Wyoming big sagebrush, Douglas rabbitbrush, black greasewood, bottlebrush squirreltail, basin wildrye, and cheatgrass.
DISTRIBUTION AND EXTENT: Western and central Nevada. These soils are moderately extensive. MLRAs 24, 25, 26, and 28B.
MLRA OFFICE RESPONSIBLE: Reno, Nevada.
SERIES ESTABLISHED: Humboldt County, Nevada (BLM Sonoma Planning Unit), 1974.
REMARKS: Diagnostic horizons and properties recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 7 inches (A horizon and the upper part of the Bw horizon).
Cambic horizon - The zone from 4 to 18 inches (Bw horizon).
Particle-size control section - The zone from 10 to 40 inches (the lower part of the Bw horizon, the C1 horizon, and the upper part of the C2 horizon).