LOCATION HUDDLE ID

Established Series
Rev. DJ/RW
01/2011

HUDDLE SERIES

The Huddle series consists of deep, well drained soils that are formed in wind deposited cinders and ash. Slopes are 2 to 12 percent. Permeability is moderate. The mean annual precipitation is about 14 inches and the mean annual air temperature is about 43 degrees F.

TAXONOMIC CLASS: Medial, amorphic, frigid Typic Vitrixerands

TYPICAL PEDON: Huddle gravelly medial loam; rangeland; on a 5 percent south east facing slopes at 5,400 feet elevation with basin big sagebrush and basin wildrye. When described on Sept. 1, 1994, the soil was dry through out. (Colors are for air-dry soil unless otherwise stated).

A--0 to 2 inches; brown (10YR 4/3) gravelly medial loam, very dark brown (10YR 2/2) moist; weak fine and medium platy structure to moderate medium granular; soft, very friable, nonsticky and nonplastic; many very fine and fine, common medium and few coarse roots; common very fine irregular and many very fine irregular pores; 20 percent cinders; slightly alkaline (pH 7.4); abrupt smooth boundary. (1 to 3 inches thick)

Bw1--2 to 7 inches; brown (10YR 4/3) medial loam, very dark brown (10YR 2/2) moist; weak medium and coarse subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and fine, common medium and few coarse roots; many very fine irregular and few fine tubular pores; 10 percent cinders; slightly alkaline (pH 7.4); clear smooth boundary.

Bw2--7 to 19 inches; yellowish brown (10YR 5/4) medial loam, dark yellowish brown (10YR 3/4) moist; weak medium and coarse subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine and few medium roots; many very fine irregular and few fine tubular pores; 10 percent cinders; slightly alkaline (pH 7.6); abrupt wavy boundary. (Combined thickness of the Bw horizons is 8 to 21 inches)

Bk1--19 to 39 inches; light yellowish brown (10YR 6/4) medial loam, dark yellowish brown (10YR 4/4) moist; weak coarse subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine and few medium roots; many few very fine irregular and many very fine and fine tubular pores; strongly effervescent (16 percent calcium equivalent); 5 percent cinders; moderately alkaline (pH 8.0); abrupt irregular boundary. (18 to 23 inches thick)

Bk2--39 to 50 inches; very pale brown (10YR 8/3) loam, light yellowish brown (10YR 6/4) moist; massive; hard, friable, slightly sticky and slightly plastic; few fine roots; common very fine and fine tubular pores; violently effervescent (31 percent calcium carbonate equivalent); 5 percent cinders and 5 percent cobbles; moderately alkaline (pH 8.0); abrupt irregular boundary. (10 to 24 inches thick)

2R--50 inches; basalt.

TYPE LOCATION: Butte County, Idaho; in Huddle's Hole, about 11 miles West and 1/2 miles South of Arco, Idaho; about 2,250 feet east, and 1,650 feet south of the northwest corner section 1, T. 2 N., R. 26 E. Latitude - 43 degrees, 26 minutes, 42 seconds north Longitude - 113 degrees, 21 minutes, 54 seconds west

RANGE IN CHARACTERISTICS:

Mean annual soil temperature - 37 to 44 degrees F.
Depth to bedrock is 40 to 60 inches.
Depth to the calcic horizon is 11 to 22 inches.

Phosphate retention is 25 to 50 percent.
Acid-oxalate aluminum plus one-half the iron is 0.4 to 1.0.
Glass percent is 30 to 50 percent.
The 15-bar water retention is 12 to 15 percent on air-dried samples and 20 to 30 percent on moist samples.

Particle-size control section:
Field estimated clay content - 12 to 26 percent
Rock fragments - 5 to 15 percent (cinders)

A horizon:
Hue - 10YR or 7.5YR
Value - 3 through 5 dry, 2 through 4 moist
Chroma - 3 or 4 dry and 2 through 4 moist

Bw horizon:
Hue - 10YR or 7.5YR
Value - 5 or 6 dry, 2 or 3 moist
Chroma - 3 or 4 dry and 2 through 4 moist

Bk horizon: Hue - 10YR or 7.5YR
Value - 6 through 8 dry and 4 through 6 moist
Chroma - 3 or 4 dry or moist
Calcium carbonate - 15 to 35 percent

COMPETING SERIES: These are the Jiggs and Moonville series. Jiggs soils lack a calcic horizon. Moonville soils are very deep to bedrock.

GEOGRAPHIC SETTING: Huddle soils are on lava plains at elevations of 4,800 to 6,000 feet. Slopes range from 2 to 12 percent. The soils formed in wind deposited ash and cinders over basalt. The mean annual precipitation ranges from 12 to 16 inches. The mean annual air temperature is about 40 to 45 degrees F. The frost free season is 60 to 90 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cinderhurst and Moonville soils. The Cinderhurst soils are shallow to bedrock. The Moonville soils are greater than 60 inches to bedrock.

DRAINAGE AND PERMEABILITY: Well drained; slow to medium runoff and moderate permeability.

USE AND VEGETATION: Huddle soils are used for rangeland and wildlife habitat. The potential native vegetation is mountain big sagebrush with bluebunch wheatgrass and Idaho fescue.

DISTRIBUTION AND EXTENT: Huddle soils are of minor extent in southern Idaho.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Butte County Area, Idaho, 1997.

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

Andic Soil Properties - Phosphate retention of over 30 percent throughout the profile, increasing with depth. Glass content is 12 to 21 percent from 0 to 39 inches. no glass measured below 39 inches. Acid oxalate aluminum plus one-half the iron is greater than 0.9 from 0 to 39 inches and is 0.1 at 39 inches and below.

Medial - 15-bar water on dried sample is 12 to 13 percent throughout the profile.

Ochric epipedon - Mollic colors only extent from 0 to 7 inches.

Cambic horizon - the zone from 7 to 19 inches (Bw2 horizon)

Calcic horizon - the zone from 19 to 50 inches (Bk1 and Bk2 horizons)

Particle-size control section - the zone from 0 to 40 inches (the A, Bw1, Bw2, Bk1 and part of the Bk2 horizons)

ADDITIONAL DATA: NSSL pedon S94ID-023-002 is data from the official series type location. Pedon was sampled under the name Moonville.

National Cooperative Soil Survey
U.S.A.