LOCATION CONNET IDEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Lithic Haploxeralfs
TYPICAL PEDON: Connet very gravelly loam on a slightly convex position on a 6 percent northwest facing sideslope at an elevation of 5,000 feet in rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 2 inches; brown (10YR 5/3) very gravelly loam, dark brown (10YR 3/3) moist; moderate fine granular structure; soft, very friable, slightly sticky and slightly plastic; common very fine and fine and few medium and coarse roots; many very fine and fine irregular and tubular pores; 40 percent gravel and 10 percent channers; neutral (pH 6.6); clear smooth boundary. (2 to 5 inches thick)
BA--2 to 8 inches; yellowish brown (10YR 5/4) very gravelly loam, brown (10YR 4/3) moist; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine and fine tubular pores; 40 percent gravel and 10 percent channers; slightly acid (pH 6.4); clear wavy boundary. (4 to 6 inches thick)
Btq--8 to 13 inches; yellowish brown (10YR 5/4) extremely gravelly loam, dark yellowish brown (10YR 4/4) moist; moderate fine and medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; common very fine and fine tubular pores; few faint clay films on faces of peds; 50 percent gravel and 20 percent channers; thin (<1mm thick) silica coats on under sides of rock fragments; slightly acid (pH 6.4); abrupt wavy boundary. (3 to 9 inches thick)
R--13 inches; highly fractured tuffaceous bedrock.
TYPE LOCATION: Gooding County, Idaho; about 2,500 feet east and 1,440 feet south of the northwest corner of Sec. 26, T.3 S., R.14 E. Lat. 43 degrees north, 08 minutes, 16 seconds; Long. 114 degrees west, 45 minutes, 53 seconds.
RANGE IN CHARACTERISTICS:
Average annual soil temperature - 47 to 50 degrees F.
Depth to bedrock - 10 to 20 inches
Reaction - slightly acid to neutral
Particle-size control section - 20 to 30 percent clay
A horizon
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 2 or 3 dry or moist
BA horizon
Value - 5 or 6 dry, 3 or 4 moist
Chroma - 3 or 4 dry or moist
Texture - GRV-L, GRX-L, CNV-L
Rock fragments - 20 to 40 percent gravel, 15 to 30 percent channers Clay content - 20 to 26 percent
Btq horizon
Hue - 10YR or 7.5YR
Value - 5 or 6 dry, 3 or 4 moist
Chroma - 3 or 4 dry or moist
Texture - GRV-L, GRX-L, CNV-CL
Rock fragments - 20 to 50 percent gravel, 15 to 30 percent channers, 0 to 5 percent flagstones
Clay content - 25 to 30 percent
Some pedons lack the silica coatings on the under sides of rock fragments.
COMPETING SERIES: This is the Vitzthum series. The Vitzthum soils have average annual soil temperature of 52 to 59 degrees F., have O horizons and receive 30 to 60 inches of precipitation.
GEOGRAPHIC SETTING: Connet soils are on foothills and canyonsides. The soils formed in loess and colluvium and residuum from tuff, rhyolite and basalt. Slopes range from 2 to 30 percent. The average annual precipitation ranges from 12 to 14 inches and the average annual temperature ranges from 45 to 48 degrees. The frost free season ranges from 75 to 90 days and the elevation ranges from 4,000 to 5,200 feet.
GEOGRAPHIC ASSOCIATED SOILS: These are the Burwill, Gaibson, Fergie and Terracecreek soils. Burwill soils are deep and lack argillic horizons. Gaibson, Fergie and Terracecreek soils have frigid soil temperature regimes. These soils all occur on similar landscapes to the Connet soils.
DRAINAGE AND PERMEABILITY: Well drained. Slow to very rapid runoff. Permeability is moderate.
USE AND VEGETATION: Connet soils are used mainly for rangeland. The potential natural vegetation is low sagebrush and bluebunch wheatgrass.
DISTRIBUTION AND EXTENT: Southcentral Idaho. The series is of small limited extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Gooding County, Idaho, 1993.
REMARKS: Diagnostic horizons and other features recognized in this pedon are:
Ochric epipedon - the zone from 0 to 2 inches (A horizon)
Argillic Horizon - the zone from 8 to 13 inches (Btq horizon)
Particle-size control section - the zone from 0 to 13 inches (A, BA, and Btq horizons. In soils that are from 14 to 20 inches deep it is the argillic horizon)