LOCATION BUDLAMP                 AZ

Established Series
Rev. WAS/PDC/CEM
04/2011

BUDLAMP SERIES

The Budlamp series consists of very shallow and shallow, well drained soils that formed in material weathered from granite and metamorphic rock. Budlamp soils are on pediments, hills and mountains. Slopes range from 8 to 60 percent. The mean annual precipitation is about 19 inches and the mean annual air temperature is about 60 degrees F.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, thermic Aridic Lithic Haplustolls

TYPICAL PEDON: Budlamp very gravelly fine sandy loam - rangeland (colors are for dry soil unless otherwise noted).

A--0 to 2 inches; dark brown (10YR 3/3) very gravelly fine sandy loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; common fine irregular pores; noneffervescent; 45 percent gravel; moderately acid (pH 6.0); abrupt smooth boundary (1 to 3 inches thick).

C--2 to 8 inches; very dark grayish brown (10YR 3/2) extremely gravelly fine sandy loam, black (10YR 2/1) moist; massive; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; common fine irregular and tubular pores; many distinct organic coatings on rock fragments; noneffervescent; 60 percent gravel and 15 percent cobble; moderately acid (pH 6.0); abrupt smooth boundary (6 to 15 inches thick).

2R--8 to 60 inches; granite.

TYPE LOCATION: Cochise County, Fort Huachuca, Arizona; located at a latitude of 32 degrees, 30 minutes, 10 seconds North and longitude of 110 degrees, 22 minutes, 30 seconds West.

RANGE IN CHARACTERISTICS:

Soil moisture - Intermittently moist in some part of the soil moisture control section during July - September and December - February. Driest during May and June. Aridic ustic soil moisture regime.

Soil Temperature: 59 to 64 degrees F.

Rock fragments: more than 35 percent

Clay content: 5 to 18 percent

Reaction: moderately acid to neutral

Organic Matter: 1 to 3 percent

Depth to bedrock: 5 to 20 inches

A horizon
Hue: 10YR, 7.5YR
Value: 3 through 5 dry, 2 or 3 moist
Chroma: 1 through 4, dry or moist
Texture: fine sandy loam, sandy loam, coarse sandy loam, loam

C horizon
Hue: 10YR, 7.5YR
Value: 3 through 6 dry, 2 through 5 moist
Chroma: 1 through 6, dry or moist
Texture: fine sandy loam, sandy loam, coarse sandy loam

COMPETING SERIES: These are the Brewster (TX), Canquya (I)(AZ), Siphoncan (I)(AZ), and Yarbam (AZ) series. Brewster soils contain 18 to 35 percent clay in the control section. Yarbam soils are calcareous throughout and contain 20 to 40 percent calcium carbonate equivalent. Canquya and Siphoncan soils are inactive.

GEOGRAPHIC SETTING: Budlamp soils are on pediments, hills and mountains at elevations of 3,580 to 6,600 feet and as high as 7,200 feet on southerly aspects. Slopes range from 5 to 70 percent. These soils formed in alluvium from granite, gneiss, monzonite, quartzite, granodiorite and other igneous and metamorphic rocks. The mean annual precipitation is 16 to 23 inches and occurs as thunderstorms during July to September and as gentle rains during December and January. The mean annual air temperature is 57 to 62 degrees F. The frost-free period is 160 to 210 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Huachuca, Hogris, and Woodcutter soils. Huachuca soils are calcareous throughout. Hogris soils are very deep. Woodcutter soils have argillic horizons.

DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff; moderately rapid permeability.

USE AND VEGETATION: Used for livestock grazing, recreation and wildlife habitat. Vegetation includes Texas bluestem, plains lovegrass, sideoats grama, bullgrass, beggartick three-awn, green sprangletop, Arizona white oak, Mexican blue oak, Emory oak, sacahuista, sotol, manzanita and Palmer agave.

DISTRIBUTION AND EXTENT: Southern Arizona. Budlamp soils are of moderate extent. MLRAs are 38 and 41.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona

SERIES ESTABLISHED: Cochise County, Arizona; Soil survey of Coronado National Memorial; 1996.

REMARKS: Diagnostic horizons and features recognized in this pedon are:

Mollic epipedon - the zone from 0 to 8 inches (A, C horizons)

Lithic contact - the boundary at 8 inches (2R horizon)

Classification changed from loamy-skeletal, mixed, superactive, thermic Lithic Haplustolls to loamy-skeletal, mixed, superactive, thermic Aridic Lithic Haplustolls in 2006.

Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Eleventh Edition, 2010

Updated competing series section, 4/7/08, CEM

Revised for the correlation of AZ675, 5/2009, WWJ

Revised for the correlation of Graham County, AZ, Southwestern Part; March, 2011, WWJ

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National Cooperative Soil Survey
U.S.A.