LOCATION BOZARTH WA

Established Series
Rev. TMR/CAB/SBC
07/2017

BOZARTH SERIES

The Bozarth series consists of moderately deep to a densic contact, somewhat poorly drained soils formed in eolian sands underlain by dense glaciomarine deposits. Bozarth soils are on remnant dunes on glacial outwash plains at elevations of 45 to 80 meters. Slopes are 2 to 8 percent. The average annual precipitation is about 559 mm. The average annual temperature is about 10 degrees C.

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Aquultic Haploxerolls

TYPICAL PEDON: Bozarth sandy loam, pasture, on a southwest facing, gently sloping outwash plain at 60 meters elevation. When described on November 11, 2005 the soil was slightly moist throughout. (Colors are for dry soil unless otherwise noted.)

A1--0 to 25 cm; very dark gray (10YR 3/1) sandy loam, black (10YR 2/1) moist; weak medium granular structure; soft, very friable, nonsticky, nonplastic; many very fine and fine and few medium roots; moderately acid (pH 6.0); clear wavy boundary.

A2--25 to 41 cm; very dark gray (10YR 3/1) fine sandy loam, black (10YR 2/1) moist; moderate medium subangular blocky structure; moderately hard, very friable, nonsticky, nonplastic; many very fine and fine roots; common faint dark yellowish brown (10YR 4/6), dark yellowish brown (10YR 3/6) moist, iron-manganese masses in matrix; slightly acid (pH 6.1); clear wavy boundary.

A3--41 to 48 cm; grayish brown (10YR 5/2) fine sandy loam, very dark grayish brown (10YR 3/2) moist; moderate medium subangular blocky structure; moderately hard, very friable, slightly sticky, slightly plastic; common very fine roots; many faint yellowish brown (10YR 5/4), dark yellowish brown (10YR 4/4) moist, iron-manganese masses in matrix; many faint light brownish gray (2.5Y 6/2), grayish brown (2.5Y 5/2) moist, iron depletions in matrix; slightly acid (pH 6.4); clear irregular boundary. (combined A horizon thickness is 25 to 50 cm)

E--48 to 58 cm; light gray (2.5Y 7/2) fine sandy loam, light brownish gray (2.5Y 6/2) moist; moderate medium subangular blocky structure; moderately hard, very friable, nonsticky, nonplastic; few very fine roots; many distinct light yellowish brown (10YR 6/4), dark yellowish brown (10YR 4/4) moist, iron-manganese masses in matrix; many prominent light gray (2.5Y 7/2), light brownish gray (2.5Y 6/2) moist, iron depletions in matrix; 5 percent gravel; neutral (pH 6.8); clear wavy boundary. (8 to 30 cm thick)

2Bg--58 to 89 cm; brownish yellow (10YR 6/6) sandy loam, dark yellowish brown (10YR 4/6) moist; strong medium subangular blocky structure; very hard, very firm, slightly sticky, moderately plastic; few very fine roots in cracks; common prominent black (10YR 2/1) moist, organoargillans on all faces of peds; many prominent brownish yellow (10YR 6/6), dark yellowish brown (10YR 4/6) moist, iron-manganese masses on surfaces along root channels and in matrix; many distinct light gray (2.5Y 7/2), light brownish gray (2.5Y 6/2) moist, iron depletions infused into matrix adjacent to pores; 5 percent gravel; neutral (pH 6.9); clear wavy boundary. (10 to 30 cm thick)

2Cd--89 to 150 cm; very pale brown (10YR 7/3) silt loam, light olive brown (2.5Y 5/3) moist; massive; very hard, very firm, slightly sticky, moderately plastic; common distinct iron-manganese masses in cracks; 5 percent gravel; neutral (pH 7.1).

TYPE LOCATION: Island County, Washington; 667 meters north and 738 meters west of SE corner of section 24, T 32N, R 1W; Willamette Meridian; USGS Port Townsend North quadrangle; lat. 48 degrees, 14 minutes, 43 seconds N. and long. 122 degrees, 45 minutes, 22 seconds west.

RANGE IN CHARACTERISTICS: Depths to diagnostic horizons and features start from the mineral soil surface.

Average annual soil temperature - 11 to 12 degrees C.
Depth to redoximorphic features with chroma of 2 or less - 25 to 50 cm
Depth to densic contact - 50 to 100 cm
Mollic epipedon thickness - 25 to 50 cm
Reaction - moderately acid to neutral
Particle size control section:
clay content - 2 to 17 percent
rock fragments - 0 to 15 percent gravel

A1 horizon
Hue 10YR or 7.5YR
Value - 2 or 3 moist, 3 or 4 dry
Chroma - 1 or 2 moist and dry
Clay content - 2 to 10 percent
Rock Fragments - 0 to 5 percent gravel

A2 horizon
Hue 10YR or 7.5YR
Value - 2 or 3 moist, 3 or 4 dry
Chroma - 1 or 2 moist and dry
Texture - SL, FSL, L
Clay content - 2 to 17 percent
Rock Fragments - 0 to 5 percent gravel

A3 horizon
Hue 10YR or 7.5YR
Value - 2 or 3 moist, 3 or 4 dry
Chroma - 1 or 2 moist and dry
Texture - SL or FSL
Clay content - 2 to 17 percent
Rock Fragments - 0 to 5 percent gravel

E horizon
Hue - 2.5Y or 10YR
Value - 4 or 5 moist, 6 or 7 dry
Chroma - 2 or 3 moist and dry
Texture - FSL or SL
Clay content - 2 to 17 percent
Rock fragments - 0 to 15 percent gravel

Bg horizon
Hue - 10YR or 2.5Y
Value - 3 to 4 moist, 5 to 7 dry
Chroma - 2 or 3 moist and dry
Texture - SL or FSL
Clay content - 2 to 17 percent
Rock fragments - 0 to 15 percent gravel

Cd horizon
Hue 2.5Y or 5Y
Value - 4 to 5 moist, 5 to 7 dry
Chroma - 2 or 3 moist and dry
Texture - SL, L, or SIL
Clay content - 5 to 17 percent
Rock fragments - 0 to 20 percent gravel

COMPETING SERIES: This is the Quafeno series. Quafeno soils lack a densic contact and are 51 to 76 cm to redoximorphic features.

GEOGRAPHIC SETTING: Bozarth soils are on remnant dunes on glacial outwash plains along the west coast of Whidbey Island. Slope ranges from 2 to 8 percent. These soils formed in eolian sands underlain by dense glaciomarine deposits. Elevations are 0 to 70 meters. The climate is characterized by warm dry summers and mild moist winters. The average annual precipitation is about 457 to 635 mm. The average annual temperature is about 10 to 11 degrees C. The frost-free period is about 200 to 240 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are Ebeys, Zylstra, and Whidbey soils. Ebeys soils are sandy and do not have densic materials or redoximorphic features within 150 cm. . Zylstra soils do not have a mollic epipedon. Whidbey soils are on hillslopes and outwash plains. Whidbey soils do not have mollic epipedon or redoximorphic features above 100 cm.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Somewhat poorly drained. Saturated hydraulic conductivity is very high in the upper part (A, E, and Bg horizons) and moderately low in the lower part (Cd horizon). Bozarth soils may have a perched water table as high as 25 cm in December through February. At lower slope ranges, Bozarth soils are subject to occasional ponding for very brief durations from December to March.

USE AND VEGETATION: These soils are used for home sites, crop production, forage crop production, and livestock grazing. . Potential natural vegetation consists of, , and Oregon white oak, baldhip rose, Roemers fescue, western brackenfern, trailing blackberry, common snowberry, Oregongrape, and oceanspray.

DISTRIBUTION AND EXTENT: Island County, Washington; MLRA A2, Northern Part. Series is of small extent.

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

SERIES ESTABLISHED: Island County, Washington, 2006.

REMARKS: Diagnostic horizons and features recognized in this pedon include:
Mollic epipedon - the zone from 0 to 48 cm (A horizons)
Albic horizon - the zone from 48 to 58 cm (E horizon)
Densic contact - 89 cm (upper boundary of Cd horizon)
Particle-size control section - the zone from 25 to 89 cm
Depth to redoximorphic features - 25 cm

The Bozarth series was mapped in the 1950 Island County, Washington Soil Survey but an official series description was never written. This series had an inactive status in the Soil Series Classification database before 4/2006. 7/2017--This official series description was updated according to SSR1 Technical Note 11--Content and Format of Official Series Descriptions (revised 12/2015). Most of the changes were in formatting; no major technical changes were made.

National Cooperative Soil Survey
U.S.A.