LOCATION HUBERLY OR
Established Series
Rev. GLG/JGM/EED
12/2017
HUBERLY SERIES
Landscape--Willamette Valley
Landform--concave swales of terraces
Slope--0 to 3 percent
Parent material--stratified glaciolacustrine deposits from the Missoula Floods
Mean annual precipitation--about 1150 mm
Mean annual air temperature--about 11 degrees C
Depth class--very deep
Drainage class--poorly drained
Soil moisture regime--aquic
Soil temperature regime--mesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Typic Fragiaqualfs
TYPICAL PEDON: Huberly silt loam in an area of pasture
A--0 to 20 cm; silt loam, gray (10YR 6/1) dry, very dark gray (10YR 3/1) moist; strong fine subangular blocky structure; slightly hard, friable, nonsticky and slightly plastic; many fine and very fine roots; many very fine irregular pores; 2 percent faint irregular dark gray (10YR 4/1) clay depletions lining pores; moderately acid (pH 6.0); abrupt smooth boundary
BAg--20 to 38 cm; silt loam, light gray (10YR 7/2) dry, grayish brown (10YR 5/2) moist; moderate medium and fine subangular blocky structure; slightly hard, friable, nonsticky and slightly plastic; common fine roots; many medium to very fine tubular pores; 25 percent fine prominent cylindrical reddish brown (5YR 4/4) iron-manganese masses on surfaces along root channels and 25 percent fine faint irregular dark gray (10YR 4/1) iron depletions lining pores; moderately acid (pH 5.8); clear smooth boundary
Btg--38 to 64 cm; silt loam, light gray (10YR 7/2) dry, grayish brown (10YR 5/2) moist; moderate coarse subangular blocky structure and moderate medium subangular blocky; hard, friable, slightly sticky and slightly plastic; common fine roots; many fine and very fine tubular pores; 5 percent continuous faint clay films on surfaces along root channels; 25 percent fine prominent cylindrical yellowish red (5YR 4/6) iron-manganese masses on surfaces along root channels and 25 percent fine faint irregular brown (7.5YR 4/2) iron depletions lining pores; moderately acid (pH 5.7); clear smooth boundary
2Btxg1--64 to 97 cm; silt loam, light brownish gray (10YR 6/2) dry, dark grayish brown (10YR 4/2) moist; weak coarse subangular blocky structure; hard, firm, nonsticky and slightly plastic; brittle; few very fine roots in cracks; many fine and very fine tubular pores; 10 percent faint clay films on surfaces along pores and root channels and 10 percent faint grayish brown (10YR 5/2) silt and sand coatings on top faces of peds; 15 percent fine distinct cylindrical weak red (7.5R 4/4) iron-manganese masses lining pores; moderately acid (pH 5.6); clear smooth boundary
2Btxg2--97 to 150 cm; silt loam, brown (10YR 5/3 and 10YR 4/3) moist; massive with bleached fracture planes that form polygons; hard, firm, slightly sticky and moderately plastic; brittle; few very fine roots in cracks; many medium and fine tubular pores; 5 percent faint clay films on surfaces along root channels; 20 percent medium distinct gray (10YR 5/1) and dark grayish brown (10YR 4/2) iron depletions lining pores; moderately acid (pH 5.6)
TYPE LOCATION: Washington County, Oregon, about 8 m north from the end of Swank Road; in the NW1/4SW1/4 of section 15, T. 2 S., R. 2 W.; latitude 45.3951733, longitude -122.9149393, datum WGS 84 (coordinates estimated from PLSS details)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--12 to 13 degrees C
Moisture control section--seasonal high water table at the surface to a depth of 20 cm below the surface in January through March
Depth to aquic conditions--at the surface to a depth of 20 cm
Depth to the argillic horizon--30 to 45 cm
Depth to the fragipan--50 to 75 cm
Particle-size control section
*Clay content--22 to 35 percent
*Sand content--less than 15 percent fine sand or coarser
*Total fragment content--0 percent
A horizon
Hue--10YR, 2.5Y
Value--3 or 4 moist, 5 or 6 dry
Chroma--1 or 2 moist or dry
Clay content--15 to 20 percent
Sand content--5 to 20 percent; less than 15 percent fine sand or coarser
Reaction--5.6 to 6.0
Thickness--18 to 23 cm
BAg horizon
Hue--10YR, 2.5Y
Value--4 or 5 moist, 6 or 7 dry
Chroma--1 or 2 moist or dry
Clay content--15 to 20 percent
Sand content--5 to 20 percent; less than 15 percent fine sand or coarser
Reaction--5.6 to 6.0
Thickness--13 to 25 cm
Btg horizon
Hue--10YR, 2.5Y, 5Y
Value--3 to 5 moist, 5 to 7 dry
Chroma--2 to 4 moist or dry
Fine-earth texture--silt loam, silty clay loam
Clay content--22 to 35 percent
Sand content--5 to 20 percent; less than 15 percent fine sand or coarser
Reaction--5.6 to 6.0
Thickness--15 to 40 cm
2Btxg1 horizon
Hue--10YR, 2.5Y, 5Y
Value--3 to 5 moist, 5 to 7 dry
Chroma--2 to 4 moist or dry
Clay content--10 to 25 percent
Sand content--5 to 20 percent; less than 15 percent fine sand or coarser
Reaction--5.6 to 6.0
Thickness--10 to 38 cm
2Btxg2 horizon
Hue--10YR, 2.5Y
Value--3 to 5 moist, 4 to 6 dry
Chroma--1 to 4 moist or dry
Clay content--10 to 25 percent
Sand content--5 to 20 percent; less than 15 percent fine sand or coarser
Reaction--5.6 to 6.0
COMPETING SERIES:
Brinkerton--10 to 80 percent coarse fragments below argillic horizon; prismatic structure in series control section; no lithologic discontinuity
GEOGRAPHIC SETTING:
Elevation--45 to 80 m
Climate--warm, dry summers; cool, moist winters
Mean annual precipitation--1000 to 1300 mm
Mean annual air temperature--11 to 12 degrees C
Mean January air temperature--3 degrees C
Mean July air temperature--19 degrees C
Frost-free period--165 to 210 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Aloha--no fragipan; 30 to 60 cm to aquic conditions; in linear positions
Quatama--no fragipan; 40 to 75 cm to aquic conditions; in linear positions and on short terrace risers
Woodburn--no fragipan; 50 to 75 cm to aquic conditions; in linear positions
Verboort--no fragipan; 35 to 55 percent clay in particle-size control section; in similar positions on lower landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--poorly drained
Saturation in normal years--apparent high water table at the surface to a depth of 20 cm below the surface in January through March; perched water table on top of fragipan
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--low
USE AND VEGETATION:
Use--production of pasture, grass and legume seed, and small grain
Potential natural vegetation--Oregon ash, willow, California hazel, sedges, grasses
DISTRIBUTION AND EXTENT: Tualatin Valley and northern Willamette Valley, Oregon; MLRA 2; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Washington County, Oregon; 1975
REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 38 to 64 cm
*Ochric epipedon
*Aquic conditions--zone from 20 to 150 cm
*Argillic horizon--zone from 38 to 64 cm
*Fragipan--zone from 97 to 150 cm
*Depth to lithologic discontinuity--64 cm
This soil is on the Senecal surface as recognized in the Willamette Valley.
8/2017--This official series description was updated according to SSR01 Technical Note 11--Content and Format of Official Series Descriptions (revised 12/2015). The classification was changed from Typic Fragiaquepts to Typic Fragiaqualfs based on recognition of the Bt horizon as argillic.
National Cooperative Soil Survey
U.S.A.