LOCATION HULDA AZ
Established Series
Rev. WJ/PH/RKS/HCD
04/2015
HULDA SERIES
The Hulda series consists of very shallow and shallow, somewhat excessive drained soils formed in alluvium and colluvium from mixed igneous and metamorphic rocks. Hulda soils are on hills and mountains and have slopes of 20 to 70 percent. The mean annual precipitation is about 10 inches and the mean annual air temperature is about 67 degrees F.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, calcareous, thermic Lithic Torriorthents
TYPICAL PEDON: Hulda extremely gravelly sandy loam - rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 3 inches; brown (10YR 4/3) extremely gravelly sandy loam, dark brown (10YR 3/3) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine roots; many very fine tubular pores; 60 percent gravel, 5 percent cobble; slightly effervescent; moderately alkaline (pH 8.0); abrupt smooth boundary. (1 to 3 inches thick)
Bw--3 to 8 inches; dark yellowish brown (10YR 4/4) very gravelly sandy loam, brown (10YR 4/3) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine roots; many very fine tubular pores; 50 percent gravel, 5 percent cobble; slightly effervescent; moderately alkaline (pH 8.0); abrupt wavy boundary. (3 to 17 inches thick)
2R--8 inches; granite.
TYPE LOCATION: Mohave County, Arizona; 9 miles southwest of the town site of White Hills; about 240 feet north and 650 feet east of the southwest corner of section 23, T. 26 N., R. 21 W. Gila and Salt River Base Meridian. 35 degrees 37 minutes 10 seconds north latitude. 114 degrees 30 minutes 8 seconds west longitude.
RANGE IN CHARACTERISTICS:
Soil moisture: 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: 66 to 72 degrees F.
Rock fragments: Averages more than 35 percent in the control section. A surface layer containing 40 to 60 percent gravel and 5 to 20 percent cobble is common.
Depth to unweathered bedrock: 4 to 19 inches
Reaction: slightly to moderately alkaline
Calcium carbonate: slightly effervescent to strongly effervescent throughout. 5 to 13 percent calcium carbonate equivalent.
Clay content: averages 5 to 18 percent
A horizon
Hue: 7.5YR, 10YR
Value: 4 or 5 dry, 3 or 4 moist
Chroma: 3 or 4, dry or moist
B horizon
Hue: 7.5YR, 10YR
Value: 4 or 5 dry, 3 or 4 moist
Chroma: 3 or 4 dry, 2, 3 or 4 moist
Texture: coarse sandy loam, sandy loam; dominantly coarse and very coarse in the sand fraction
Some pedons contain a layer of weathered bedrock less than 3 inches thick above the lithic contact.
COMPETING SERIES: These are the
Akela (NM),
Beach (TX)(T),
Dalvord (CA),
Galehills (NV)(T),
Haleburu (CA),
Hindu (AZ),
Noble Pass (CA),
Paintrocks (CA),
Tecopa (CA),
Terlingua (TX), and
Upspring (CA) series. Potential competitors that do not yet have CEA class assigned are the,
Pearce and
Razorback series. Akela, Beach, Hindu, and Terlingua soils are moist for more than 20 days cumulative in the summer months. In addition, the Akela soils are dominated by fine sand, the Beach soils have hue redder than 7.5YR and are dominated by fine sand, the Hindu soils have less than 30 percent medium sand or coarser, formed in limestone, and have 20 to 35 percent calcium carbonate, the Terlingua soils are less than 14 inches deep to paralithic materials. Dalvord, Galehills, Haleburu, Noble Pass, Paintrocks, Tecopa and Upspring soils are dry in the moisture control section for longer periods due to a much lower rainfall component. In addition, the Galehills soils formed in sandstone conglomerate, the Noble Pass soils have more than 60 percent coarse fragments, the Paintrocks soils are less than 3 inches deep to paralithic materials, and the Upspring soils formed in material influenced by pyroclastics. The Pearce soils formed in limestone and are dominated by cobble and stone. The Razorback soils have less than 30 percent medium sand or coarser and formed in basalt and similar volcanic rocks.
GEOGRAPHIC SETTING: Hulda soils are on hills and mountains at elevations of 2,500 to 5,200 feet. These soils formed in colluvium and alluvium from mixed igneous and metamorphic rocks. Slopes range from 20 to 70 percent. The mean annual precipitation is 9 to 12 inches. The mean annual air temperature is 64 to 70 degrees F. The frost-free period is 200 to 280 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Azure and
Antares soils. Azure soils have an argillic horizon. Antares soils are shallow to weathered granite.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; very high runoff; moderately rapid permeability
USE AND VEGETATION: Hulda soils are used for livestock grazing, recreation, wildlife habitat and watershed. The present vegetation is creosotebush, white bursage, flattop buckwheat, desert needle grass, and big galleta.
DISTRIBUTION AND EXTENT: Northwestern Arizona. This soil occurs in LRR-D, MLRA 30. This series is of large extent. The name is from a local pass.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: PHOENIX, ARIZONA
SERIES ESTABLISHED: Mohave County, Arizona; Soil survey of Mohave County, Arizona, Central Part; 2005.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from 0 to 3 inches (A horizon)
Entisol feature - The absence of diagnostic subsurface horizons
Lithic contact - The boundary at 8 inches (2R horizon)
Classified according to Keys to Soil Taxonomy Ninth Edition, 2003.
Responsibility for this series was transferred from Davis to Phoenix 4/2015. The last revision to the series was 1/2005. ET
National Cooperative Soil Survey
U.S.A.