LOCATION HUTSON OREstablished Series
TAXONOMIC CLASS: Ashy, amorphic Typic Vitricryands
TYPICAL PEDON: Hutson ashy fine sandy loam, woodland. (Colors are for moist soil unless otherwise noted.)
Oi--0 to 2 inches; slightly decomposed fir needles, twigs, moss.
E--2 to 6 inches; dark brown (7.5YR 4/2) ashy fine sandy loam, pinkish gray (7.5YR 6/2) dry; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; many roots; many very fine irregular pores; slightly acid (pH 6.4); clear smooth boundary. (0 to 6 inches thick)
Bs1--6 to 20 inches; dark brown (7.5YR 4/4) ashy fine sandy loam, light brown (7.5YR 6/4) dry; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; many roots; many very fine tubular pores; 5 percent gravel 2 to 5 mm in diameter; slightly acid (pH 6.4); gradual smooth boundary.
Bs2--20 to 31 inches; yellowish red (5YR 4/6) ashy fine sandy loam, reddish brown (5YR 5/4) dry; weak fine subangular blocky structure; slightly hard, friable, nonsticky and nonplastic; many roots; many very fine tubular pores; 5 percent gravel, 2 to 5 mm in diameter; slightly acid (pH 6.2); gradual smooth boundary.
Bs3--31 to 47 inches; dark brown (7.5YR 4/4) ashy fine sandy loam, light brown (7.5YR 6/4) dry; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common roots; common very fine tubular pores; 5 percent gravel; moderately acid (pH 6.0); gradual smooth boundary. (Combined thickness of the Bs horizon is 38 to 55 inches)
2C--47 to 64 inches; reddish brown (5YR 4/4) loam, brown (7.5YR 5/4) dry; massive; slightly hard, friable, slightly sticky and slightly plastic; common roots; common very fine tubular pores; 10 percent gravel and 5 percent cobbles; moderately acid (pH 5.8).
TYPE LOCATION: Hood River County, Oregon; near Lumsford gate in the SE1/4 SE1/4 SW1/4 sec. 31, T.1S., R.10E.
RANGE IN CHARACTERISTICS: The soils are usually moist between depths of 8 to 24 inches. The mean annual soil temperature ranges from 40 to 45 degrees F. Depth to bedrock is more than 60 inches. The thickness of the ash over the 2C horizon ranges from 40 to 60 inches. The particle-size control section has greater than 85 percent phosphate retention, acid oxalate extractable aluminum plus one-half iron of 2.0 to 3.0 percent, and 9 to 12 percent 15-bar moisture based on an air-dried sample. The soils are slightly or moderately acid.
The A or E horizon has hue of 7.5YR or 10YR, value of 3 or 4 moist, 5 or 6 dry and chroma of 2 or 3 moist and dry.
The Bs horizon has hue of 10YR to 5YR, value of 5 or 6 dry and chroma of 3 through 6 moist and dry. It is ashy fine sandy loam, ashy loam, or gravelly ashy loam with 5 to 10 percent clay. It has 3 to 15 percent gravel and 0 to 10 percent cobbles. It ranges up to 35 percent rock fragments in the lower part below 40 inches in some pedons.
The 2C horizon has hue of 10YR to 5YR, value of 5 or 6 dry and chroma of 3 or 4 moist and 4 or 6 dry. It is loam or fine sandy loam with 3 to 20 percent gravel, 0 to 15 percent cobbles and 0 to 15 percent stones.
COMPETING SERIES: These are the Belrick, Linksterly, Millerpoint and Winegar series. Belrick and Linksterly soils have an umbric epipedon. Belrick soils are 20 to 40 inches deep to glacial till. Winegar soils are 20 to 40 inches deep to densic material. Millerpoint soils have hue of 10YR only in the subsoil.
GEOGRAPHIC SETTING: Hutson soils are on mountains. The soils formed in volcanic ash and mixed colluvium high in pyroclastic materials. Slopes are 0 to 65 percent. Elevations between 2,400 and 5,500 feet. The climate is characterized by cold wet winters and cool moist summers. The mean annual precipitation is 50 to 100 inches. The mean annual temperature is 38 to 42 degrees F. The frost-free period is 30 to 60 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Divers and Yallani soils. Divers soils are medial-skeletal and are on similar positions. Yallani soils are ashy-skeletal, on south-facing slopes and are frigid.
DRAINAGE AND PERMEABILITY: Well-drained; moderately rapid permeability.
USE AND VEGETATION: These soils are used for timber production and recreation. Vegetation is mainly Douglas fir, grand fir, noble fir, white pine, western hemlock with vine maple, hazel and golden chinkapin.
DISTRIBUTION AND EXTENT: Hood River County, Oregon; MLRA 3.. The series is extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Hood River County, Oregon, 1975.
REMARKS: Diagnostic horizons and features recognized in this pedon:
Albic epipedon - from 0 to 4 inches (E horizon); this horizon is not always present.
Bs horizons - from 4 to 45 inches (Bs1, Bs2, and Bs3 horizons) meet the color requirement for spodic material but the pH is too high for spodic materials.
Particle-size control section - from 0 to 40 inches (E, Bs1, Bs2 horizons and upper 11 inches of Bs3 horizon)
Andic properties - from 2 to 47 inches with volcanic glass and glass aggregate estimated to range from 50 to 70 percent.
Field investigation is needed to substantiate a range of characteristics. Currently the color ranges and pH ranges as described are quite broad and some pedons will qualify as Spodosols. Separation from the tentative Millerpoint series needs more review. It is suggested that Hutson soils be defined as having subsoil hue of 7.5YR and 5YR and that the series be considered for a proposed spodic subgroup. The Millerpoint series be defined as having subsoil hue of 10YR only and not be considered as meeting "spodic" subgroup criteria.