LOCATION POACHIE AZ
Established Series
WJ/PDC/RLB
12/2015
POACHIE SERIES
The Poachie series consists of very deep, well drained soils that formed in alluvium from mixed sources. Poachie soils are on fan terraces with slopes of 1 to 15 percent. The mean annual precipitation is about 9 inches and the mean annual air temperature is about 64 degrees F.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, thermic Typic Calciargids
TYPICAL PEDON: Poachie gravelly sandy loam - rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 2 inches; yellowish brown (10YR 5/4) gravelly sandy loam, dark yellowish brown (10YR 4/4) moist; weak thin platy structure; soft, very friable, nonsticky and nonplastic; common very fine roots; few fine irregular pores; 15 percent gravel; slightly effervescent; slightly alkaline (pH 7.6); abrupt smooth boundary. (1 to 3 inches thick)
Bw--2 to 24 inches; brown (7.5YR 5/4) sandy loam, dark brown (7.5YR 4/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine roots; common fine tubular pores; 10 percent gravel; slightly effervescent; slightly alkaline (pH 7.8); abrupt smooth boundary. (4 to 24 inches thick)
Btk--24 to 38 inches; brown (7.5YR 5/4) sandy clay loam, dark brown (7.5YR 4/4) moist; moderate fine subangular blocky structure; slightly hard, soft, slightly sticky and slightly plastic; common very fine roots; common fine tubular pores; common faint clay films on ped faces and in pores; 10 percent gravel; strongly effervescent, 10 percent calcium carbonate equivalent; many very fine soft calcium carbonate masses; moderately alkaline (pH 8.0); clear smooth boundary. (6 to 15 inches thick)
Bk--38 to 60 inches; pink (7.5YR 8/4) gravelly coarse sandy loam, pink (7.5YR 7/4) moist; weak fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; few very fine roots; common fine tubular pores; 15 percent gravel; violently effervescent, 30 percent calcium carbonate equivalent; moderately alkaline (pH 8.2).
TYPE LOCATION: Mohave County, Arizona; located at a latitude of 34 degrees, 40 minutes, 12 seconds north and a longitude of 113 degrees, 55 minutes, 54 seconds west; 1,550 feet east and 2,500 feet south of the northwest corner of section 1, T. 15 N., R. 16 W.
RANGE IN CHARACTERISTICS:
Intermittently moist in some part of the soil moisture control section during December-February and for less than 20 days cumulative during July-September. Driest during May and June. Typic aridic soil moisture regime.
Soil Temperature: 61 to 72 degrees F.
Reaction: slightly or moderately alkaline
Rock fragments: averages less than 15 percent in the control section
Depth to calcic horizon: 14 to 38 inches; 15 to 30 percent calcium carbonate equivalent
A horizon
Hue: 10YR, 7.5YR
Value: 5 or 6 dry, 3 to 5 moist
Chroma: 3 or 4, dry or moist
Bw horizon
Hue: 7.5YR, 5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 to 6, dry or moist
Btk horizons
Hue: 7.5YR, 5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 to 6, dry or moist
Texture: sandy clay loam, loam (20 to 27 percent clay)
Bk horizon
Hue: 7.5YR, 5YR
Value: 6 to 8 dry, 5 to 7 moist
Chroma: 4 to 6, dry or moist
Rock fragments: 15 to 35 percent gravel
COMPETING SERIES: These are the
Anway (AZ),
Avenal (CA),
Berino (NM),
Bryman (CA),
Bucklebar (NM),
Cornville (AZ),
Dona Ana (NM),
Dutchflat (AZ),
Garlock (CA),
Hap (NM),
Hi Vista (CA),
Kidwell (NV),
Lanip (NV),
Madurez (NM),
Milham (CA),
Mirage (CA),
Mohave (AZ),
Neuralia (CA),
Palomas (NM) and
Tres Hermanos (NM) series.
Anway,
Avenal,
Bryman,
Bucklebar,
Dutchflat (AZ),
Garlock,
Lanip,
Milham,
Mirage,
Neuralia and
Palomas soils do not have a calcic horizon.
Garlock and
Palomas soils have highly weathered granite above 40 inches.
Hap and
Tres Hermanos soils have 15 to 35 percent rock fragments in the control section.
Hi Vista soils have a lithic contact above 40 inches.
Anway,
Berino,
Bucklebar,
Cornville,
Dona Ana,
Hap,
Madurez,
Mohave and
Tres Hermanos soils are moist in the control section for more than 20 days cumulative in the summer.
Kidwell soils average more than 15 percent gravel in the control section.
GEOGRAPHIC SETTING: Poachie soils are on fan terraces. Slopes range from 1 to 15 percent. These soils formed in alluvium from mixed sources. Elevations range from 2,000 to 3,200 feet. The mean annual precipitation is 6 to 12 inches. The mean annual air temperature is 59 to 70 degrees F. The frost-free period is about 200 to 250 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Mohon,
Wikieup and
Orwash soils. Mohon soils have a clay argillic horizon. Wikieup soils are shallow to bedrock. Orwash soils are sandy throughout.
DRAINAGE AND PERMEABILITY: Well drained; slow runoff; moderate permeability.
USE AND VEGETATION: Used for livestock grazing and wildlife habitat. Vegetation includes big galleta, bush muhly, black grama, creosotebush, white bursage and rayless goldenhead.
DISTRIBUTION AND EXTENT: Northwestern Arizona. This series is of moderate extent. MLRA is 30. The name is from a local mountain.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: PHOENIX, ARIZONA
SERIES PROPOSED: Mohave County, Arizona; Soil survey of Mohave County, Arizona, Southern Part; 1993.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from 0 to 2 inches (A horizon)
Argillic horizon - The zone from 24 to 38 inches (Btk horizon)
Calcic horizon - The zone from 24 to 60 inches (Btk, Bk horizons)
Responsibility for this series was transferred from Davis to Phoenix 12/2015. The last revision to the series was 5/2005. ET
National Cooperative Soil Survey
U.S.A.