LOCATION JOSIE IDEstablished Series
TAXONOMIC CLASS: Coarse-loamy, isotic Vitrixerandic Humicryepts
TYPICAL PEDON: Josie fine gravelly ashy sandy loam -- on a south-facing slope of 10 percent on a broad mountain ridge at 7,100 feet elevation in open forestland. Described in 1964. (Colors are for air-dry soil unless otherwise noted.)
A1--0 to 7 inches; brown (10YR 5/3) fine gravelly ashy sandy loam, dark brown (10YR 3/3) moist; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; many very fine irregular and very fine and fine tubular pores; 20 percent angular fine gravel; strongly acid (pH 5.3); clear smooth boundary. (2 to 10 inches thick)
A2--7 to 13 inches; brown (10YR 5/3) fine gravelly ashy sandy loam, dark brown (10YR 3/3) moist; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; many very fine irregular and tubular pores; 15 percent angular fine gravel; strongly acid (pH 5.2); gradual wavy boundary. (8 to 15 inches thick)
Bw1--13 to 24 inches; light yellowish brown (10YR 6/4) fine gravelly ashy coarse sandy loam, dark yellowish brown (10YR 4/4) moist; weak very fine and fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine roots; many very fine interstitial and tubular pores; 15 percent angular fine gravel; strongly acid (pH 5.2); gradual wavy boundary. (8 to 20 inches thick)
Bw2--24 to 42 inches; light yellowish brown (10YR 6/4) very cobbly ashy coarse sandy loam, dark yellowish brown (10YR 4/4) moist; weak very fine and fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine roots; many very fine irregular and common very fine tubular pores; 12 percent angular gravel and 30 percent angular cobbles; strongly acid (pH 5.3); clear wavy boundary. (8 to 20 inches thick)
C--42 to 60 inches; light yellowish brown (10YR 6/4) very cobbly ashy loamy coarse sand, dark yellowish brown (10YR 4/4) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine roots; many very fine irregular and few very fine tubular pores; 25 percent angular fine gravel and 30 percent angular cobbles; strongly acid (pH 5.2).
TYPE LOCATION: Boise County, Idaho; southwest 1/4, northwest 1/4, northwest 1/4 of section 35, T.10 N., R.6 E.; about 1/4 mile northwest of Bog Guard Station and 1/4 mile north of road junction to Deadwood Lookout, 500 feet west of road and 50 feet north of northeast edge of subalpine fir stand; USGS Scott Creek Quadrangle.
RANGE IN CHARACTERISTICS:
Umbric epipedon thickness - 10 to 20 inches thick
Vitrandic feature thickness - 40 to 60 inches
Depth to bedrock - greater than 60 inches
Base saturation - 5 to 35 percent
Particle-size control section - 4 to 10 percent clay; 5 to 35 percent rock fragments
Reaction - very strongly acid through moderately acid
Moisture control section - dry 45 to 60 consecutive days in the four months following the summer solstice
Average annual soil temperature - 36 to 40 degrees F
Average summer soil temperature - 43 to 46 degrees F.
A horizon
Hue - 10YR or 7.5YR
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 2 or 3 dry or moist
Rock fragments - 0 to 5 percent stones, 0 to 10 percent cobbles, 5 to 25 percent fine gravel and 5 to 35 percent total
Volcanic glass content - 5 to 20 percent
Acid oxalate extract A1+1/2 Fe - 0.4 to 1.0 percent
Bw horizon
Hue 2.5Y, 10YR or 7.5YR
Value - 4 through 6 dry, 2 through 4 moist
Chroma - 3 or 4 dry or moist
Texture - ASHY-SL, ASHY-LS or ASHY-COSL
Clay content - 4 to 10 percent
Rock fragments - 0 to 5 percent stones, 0 to 30 percent cobbles, 5 to 25 percent gravel and 5 to 35 percent total
Volcanic glass content - 5 to 20 percent
Acid oxalate extract A1+1/2 Fe - 0.4 to 1.0 percent
C horizon
Hue - 2.5Y or 10YR
Value - 5 through 7 dry, 4 through 6 moist
Chroma - 3 or 4 dry or moist
Texture - ASHY-LS, ASHY-LCOS or ASHY-COS
Clay content - 0 to 5 percent
Rock fragments - 0 to 30 percent cobbles, 5 to 30 percent gravel and 5 to 35 percent total
Volcanic glass content - 5 to 10 percent
Acid oxalate extract A1+1/2 Fe - 0.2 to 1.0 percent
COMPETING SERIES: This is the Marmotland (T) series. This series is not currently in the database and cannot be competed. The Zan series has a similar classification. The Zan soils are in a sandy family.
GEOGRAPHIC SETTING: Josie soils are strongly sloping to very steep on exposed mountain slopes and ridges at elevations of 6,000 to 8,500 feet. Slopes range from 8 to 60 percent. These soils formed in colluvium and residuum from granitic rocks mixed with volcanic ash. Average annual precipitation is 28 to 45 inches. Average annual temperature is 35 to 39 degrees F. Frost-free period is 15 to 60 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Coski, Hanks and Zimmer soils. Coski soils have a mollic epipedon and an O horizon. Hanks soils do not have an umbric epipedon and have an O horizon. Coski and Hanks soils are on less exposed geomorphic positions. Zimmer soils are shallow to bedrock and on similar geomorphic positions.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; medium to rapid runoff; moderately rapid permeability.
USE AND VEGETATION: Josie soils are used mainly for livestock grazing and wildlife habitat. Native vegetation is subalpine big sagebrush, mountain brome, needlegrasses, lupine, eriogonum and arrowleaf balsamroot.
DISTRIBUTION AND EXTENT: West-central Idaho. MLRA 43b. Joise soils are moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Middle Fork Payette River Area, Boise and Valley Counties, Idaho, 1969.
REMARKS: Diagnostic horizons and features recognized in this pedon:
Umbric epipedon - zone from 0 to 13 inches (A1 and A2 horizons)
Vitrandic feature - zone from 0 to 42 inches (A and Bw horizons)
Particle-size control section - zone from 0 to 40 inches
Soil moisture regime - xeric
Series classification revised 09/2002 from ashy, glassy Humic Vitricryands to coarse-loamy, isotic Vitrandic Dystrocryepts based on lab data from similar soils in the area.
ADDITIONAL DATA: Partial laboratory data available for pedon # 79P351, Elmore County, Idaho; NSSL; Lincoln, NE.