LOCATION YIPOR NVEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, calcareous, mesic Typic Torriorthents
TYPICAL PEDON: Yipor silt loam, rangeland. (Colors are for dry soil unless otherwise noted.)
Al--0 to 4 inches; light gray (l0YR 7/2) silt loam, brown (l0YR 4/3) moist; weak coarse prismatic structure parting to moderate fine and medium platy; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and few fine roots; many very fine vesicular, and common very fine interstitial and tubular pores; strongly effervescent; strongly alkaline (pH 8.6); clear irregular boundary. (2 to 5 inches thick)
A2--4 to 8 inches; light brownish gray (l0YR 6/3) silt loam, brown (l0YR 4/3) moist; weak fine platy structure; slightly hard, very friable, slightly sticky and plastic; common very fine and few fine roots; common very fine tubular pores; strongly effervescent; strongly alkaline (pH 9.0); clear wavy boundary. (0 to 5 inches thick)
Cl--8 to l8 inches; very pale brown (l0YR 7/3) very fine sandy loam, dark yellowish brown (l0YR 4/4) moist; massive; slightly hard, very friable, nonsticky and slightly plastic; common very fine and fine roots; common very fine tubular pores; violently effervescent; strongly alkaline (pH 9.0); gradual smooth boundary. (5 to l2 inches thick)
C2--l8 to 38 inches; very pale brown (l0YR 7/3) silt loam, yellowish brown (l0YR 5/4) moist; massive; slightly hard, very friable, slightly sticky and slightly plastic; few very fine and very few fine roots; common very fine tubular pores; violently effervescent; strongly alkaline (pH 8.8); gradual wavy boundary. (4 to 20 inches thick)
Cy--38 to 60 inches; very pale brown (l0YR 7/3) silt loam, yellowish brown (l0YR 5/4) moist; massive; soft, very friable, slightly sticky and slightly plastic; very few very fine and fine roots; common very fine tubular pores; common fine rounded gypsum crystals; strongly effervescent; strongly alkaline (pH 8.6).
TYPE LOCATION: Lander County, Nevada; approximately 8.5 miles southeast of Battle Mountain, about 2,600 feet west and 0.4 mile south of the northeast corner of section l7, T. 3l N., R. 46 E.
RANGE IN CHARACTERISTICS:
Soil moisture - Usually dry, moist for short periods in winter and early spring, dry early May through mid-November.
Soil temperature - 47 to 52 degrees F.
Control Section - Texture: Silt loam or very fine sandy loam with thin strata of loam in some pedons.
Clay content: 8 to l8 percent.
Reaction - Strongly alkaline or very strongly alkaline.
Effervescence - Strongly or violently effervescent throughout the profile.
Salt and sodium- They are normally moderately or strongly saline-sodic affected. Some pedons are commonly non or slightly saline-alkali affected in the surface layer.
A horizon - Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
C horizon - Value: 6 or 7 dry, 4, 5 or 6 moist.
Chroma: 3 or 4.
Other features: Some pedons have strata of loamy sand below 40 inches. Some pedons have a horizon of 5 to l5 percent lime concretions in the control section. Some pedons lack gypsum crystals in the lower horizons.
COMPETING SERIES: These are the Garbutt and Penoyer soils. Garbutt soils have 20 to 50 percent volcanic glass in the sand and silt fractions and have segregated pedogenic lime in the particle-size control section. Penoyer soils have soil temperatures of 53 to 59 degrees F. and appreciable precipitation during the summer months.
GEOGRAPHIC SETTING: Yipor soils occur on inset fans, fan skirts, and lake plain terraces and stream terraces. These soils formed in silty alluvium from mixed rock sources with an admixture of loess. Slopes are 0 to 2 percent. Elevations are 3,600 to 5,200 feet. The climate is cool, semiarid with warm, dry summers and cool, moist winters. The mean annual precipitation is 6 to 8 inches; mean annual temperature is 46 to 50 degrees F., and the frost-free season is l00 to l20 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bubus and Needlepeak soils. Bubus soils have fine sandy loam particle-size control sections. Needlepeak soils are somewhat poorly drained and have 20 to 35 percent clay in the particle-size control section.
DRAINAGE AND PERMEABILITY: Well drained; slow or ponded runoff; moderate permeability.
USE AND VEGETATION: Rangeland and wildlife habitat. The present vegetation is mainly shadscale, black greasewood, suaeda and mustard.
DISTRIBUTION AND EXTENT: Central Nevada. These soils are of small extent.
MLRA OFFICE RESPONSIBLE: Reno, Nevada
REMARKS:
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data. The remainder of this document has not been updated.
SERIES ESTABLISHED: Pershing County, East Part, Nevada, 1986.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 8 inches (A1, A2 horizons).
Particle-size control section - The zone from 10 to 40 inches (C1, C2 and Cy horizons).