LOCATION LORENA WA
Established Series
Rev. PNP/KDPL/RWL/SBC
09/2019
LORENA SERIES
Landscape--plateaus, hills, canyonlands
Landform--structural benches, hillslopes, canyons
Slope--0 to 65 percent
Parent material--colluvium derived from basalt mixed with loess and a minor amount of volcanic ash
Mean annual precipitation--about 430 mm
Mean annual air temperature--about 9 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Ultic Argixerolls
TYPICAL PEDON: Lorena silt loam, cultivated, on a 2-percent, west-facing slope at an elevation of 625 m
Ap--0 to 20 cm; silt loam, brown (10YR 5/3) dry, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, friable, slightly sticky and slightly plastic; many fine roots; many fine irregular pores; slightly acid (pH 6.4); clear wavy boundary
A--20 to 41 cm; silt loam, brown (10YR 5/3) dry, very dark grayish brown (10YR 3/2) moist; weak fine and medium subangular blocky structure; soft, friable, slightly sticky and slightly plastic; many very fine and common fine roots; many fine irregular pores; slightly acid (pH 6.4); clear smooth boundary
BA--41 to 51 cm; silt loam, yellowish brown (10YR 5/4) dry, dark brown (10YR 3/3) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; many fine irregular pores and common fine tubular pores; neutral (pH 6.6); clear smooth boundary
Bt1--51 to 79 cm; silt loam, yellowish brown (10YR 5/4) dry, dark brown (10YR 3/3) moist; moderate medium subangular blocky structure; slightly hard, friable, moderately sticky and slightly plastic; common fine roots; common fine irregular and tubular pores; few faint clay films in pores; neutral (pH 6.8); clear smooth boundary
Bt2--79 to 91 cm; silt loam, yellowish brown (10YR 5/4) dry, brown (10YR 4/3) moist; weak fine and medium subangular blocky structure; slightly hard, friable, moderately sticky and moderately plastic; few fine roots; common fine irregular and tubular pores; few faint clay films in pores; neutral (pH 7.0); abrupt wavy boundary
2R--91 cm; basalt
TYPE LOCATION: Klickitat County, Washington, about 10 km west of Centerville; about 6 m north and 15 m east of the southwest corner of section 2, T. 3 N., R. 14 E.; latitude 45 degrees, 46 minutes, 3 seconds north and longitude 121 degrees, 1 minute, 46 seconds west
RANGE IN CHARACTERISTICS:
Moisture control section--usually moist, but dry 75 to 90 consecutive days following summer solstice
Mean annual soil temperature--9 to 11 degrees C
Depth to bedrock--50 to 100 cm
Particle-size control section--18 to 30 percent clay; 0 to 5 percent rock fragments
Thickness of mollic epipedon--28 to 51 cm
Ap horizon
Thickness--10 to 23 cm
A and BA horizons
Hue--7.5YR, 10YR
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Reaction--5.6 to 7.3
Thickness of A horizon--13 to 25 cm
Thickness of BA horizon--0 to 15 cm
Bt1 horizon
Hue--7.5YR, 10YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--3 or 4 dry or moist
Texture--silt loam, silty clay loam
Rock fragment content--0 to 5 percent
Reaction--6.1 to 7.3
Thickness--20 to 30 cm
Bt2 horizon
Hue--7.5YR, 10YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--3 or 4 dry or moist
Texture--silt loam, loam, clay loam
Rock fragment content--0 to 15 percent
Thickness--8 to 20 cm
COMPETING SERIES:
Annum--100 to 150 cm (deep) to a paralithic contact (granodiorite); dry 90 to 105 consecutive days following summer solstice
Brownlee--100 to 150 cm or more (deep, very deep) to a paralithic contact (granodiorite)
Chirpchatter--no lithic contact within a depth of more than 150 cm; dry more than 90 consecutive days following summer solstice
Ebadlow,
Fisherhill--no lithic contact within a depth of more than 150 cm; dry 90 to 105 consecutive days following summer solstice
Felton--100 to 150 cm (deep) to a paralithic contact (shale); dry more than 90 consecutive days following summer solstice
Goldendale--no lithic contact within a depth of 100 cm
Hellake--no lithic contact within a depth of more than 150 cm
Lompico--50 to 100 cm (moderately deep) to a paralithic contact (sandstone); dry more than 90 consecutive days following summer solstice
Meland--dry 45 to 70 consecutive days following summer solstice
Mendian--no lithic contact within a depth of more than 150 cm; dry 90 to 100 consecutive days following summer solstice
Meystre,
Quiden--no lithic contact within a depth of more than 150 cm; dry 60 to 75 consecutive days following summer solstice
Rehfield,
Updegraff--no lithic contact within a depth of 100 cm; dry more than 90 consecutive days following summer solstice
Robbscreek--50 to 100 cm (moderately deep) to a lithic contact (granodiorite); 15 to 35 percent rock fragments in particle-size control section
Schumacher--no lithic contact within a depth of 100 cm; dry 45 to 60 consecutive days following summer solstice
Stacker--dry 90 to 105 consecutive days following summer solstice
Stardust--no lithic contact within a depth of more than 150 cm
Van Horn--dry more than 60 consecutive days following summer solstice; mica throughout solum
GEOGRAPHIC SETTING:
Elevation--90 to 1275 m
Climate--warm, dry summers; cool, moist winters
Mean annual precipitation--380 to 460 mm
Mean January air temperature--about -2 degrees C
Mean July air temperature--about 19 degrees C
Mean annual air temperature--about 8 to 10 degrees C
Frost-free season--105 to 150 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Blockhouse--no lithic contact within a depth of more than 150 cm; seasonal high water table; on footslopes of alluvial plains
Goldendale--argillic horizon; no lithic contact within a depth of 100 cm; on plateaus and side slopes
Gunn--no lithic contact within a depth of 100 cm; no mollic epipedon; on plateaus and side slopes
Gwin--25 to 50 cm (shallow) to a lithic contact (basalt); loamy-skeletal particle-size class
Rockly--loamy-skeletal particle-size class; 10 to 30 cm (very shallow, shallow) to a lithic contact (basalt); on plateaus, ridges, and canyon walls
Swalecreek--fine particle-size class; poorly drained; on terraces
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--mainly crop production
Common crops--small grain, hay and pasture
Native vegetation--Oregon white oak, antelope bitterbrush, bluebunch wheatgrass, Sandberg bluegrass, bottlebrush squirreltail, eriogonum
DISTRIBUTION AND EXTENT: Klickitat and Yakima Counties, Washington; MLRA 8; moderate extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Douglas County, Washington; 1998
REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Mollic epipedon--zone from the surface to a depth of 51 cm
*Argillic horizon--zone from 51 to 91 cm
*Depth to lithic contact--91 cm
*Particle-size control section--zone from 51 to 91 cm
National Cooperative Soil Survey
U.S.A.