LOCATION LAKI OR+CA
Established Series
Rev. JSC/AON/TDT/BTH/CEG
02/2024
LAKI SERIES
Landscape--Intermontane basins
Landform--terraces
Slope--0 to 2 percent
Parent material--alluvium and lacustrine deposits derived from basalt, tuff, diatomite, and ash
Mean annual precipitation--about 305 mm
Mean annual air temperature--about 9 degrees C
Depth class--deep and very deep
Drainage class--moderately well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Vitrandic Haploxerolls
TYPICAL PEDON: Laki loam, cultivated
Ap--0 to 20 cm; loam, grayish brown (10YR 5/2) dry, very dark brown (10YR 2/2) moist; weak thin platy parting to weak fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine roots; many very fine pores; few reddish brown and brown fine concretions; slightly effervescent; moderately alkaline (pH 7.9); clear smooth boundary
A--20 to 38 cm; loam, grayish brown (10YR 5/2) dry, very dark brown (10YR 2/2) moist; weak medium prismatic structure parting to weak fine granular; slightly hard, friable, slightly sticky and slightly plastic; common very fine roots; many very fine pores; slightly effervescent; moderately alkaline (pH 8.4); clear smooth boundary
AB--38 to 48 cm; loam, grayish brown (10YR 5/2) dry, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine roots; many very fine tubular pores; few fine flecks and streaks of lime; slightly effervescent; moderately alkaline (pH 8.4); clear wavy boundary
Bw--48 to 81 cm; loam, light brownish gray (10YR 6/2) dry, dark grayish brown (10YR 4/2) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine roots; many very fine tubular pores; few grayish brown (10YR 5/2) coatings in pores; few firm aggregates; strongly effervescent; strongly alkaline (pH 8.8); gradual wavy boundary
C1--81 to 122 cm; loam, light gray (10YR 7/2) dry, brown (10YR 4/3) moist; massive; soft, very friable, nonsticky and nonplastic; few fine roots; many very fine tubular pores; few firm aggregates; strongly effervescent; strongly alkaline (pH 8.9); clear wavy boundary
C2--122 to 152 cm; loam, light gray (10YR 7/1) dry, dark grayish brown (10YR 4/2) moist; weak thick platy structure; hard, friable and firm, slightly sticky, and nonplastic; 1 percent dark yellowish brown (10YR 4/6) moist iron-manganese masses with diffuse boundaries throughout the matrix; many very fine and fine, and few medium tubular pores; strongly effervescent; strongly alkaline (pH 8.6)
TYPE LOCATION: Klamath County, Oregon; 390 m east and 560 m south of the northwest corner of section 31, T. 39 S., R. 11 E., Willamette Meridian; Bonanza, Oregon USGS 7.5 Minute Topographic Quadrangle; latitude 42.14639 degrees north, longitude 121.4617 degrees west, datum WGS 84 (coordinates derived from topographic map legal description)
RANGE IN CHARACTERISTICS:
*Soil temperature regime--mesic
*Mean annual soil temperature-- 8 to 12 degrees C
*Moisture control section--10 to 30 cm; usually moist, dry for 45 to 70 days in the summer
*Mollic epipedon--25 to 50 cm thick
*Depth to bedrock--greater than 150 cm
*Depth to redoximorphic features and aquic conditions--100 to 150 cm
*SAR--irregular changes with depth; commonly 10 to 25
*EC--0 to 16 mmhos/cm
*Carbonates--commonly present throughout the soil; range from trace to 10 percent; the soils lack soft, powdery secondary lime within 1 m of the surface.
Particle-size control section
*Fine-earth texture--loam, fine sandy loam
*Clay content--10 to 25 percent, field estimated
Estimated properties, all horizons
*Volcanic glass content--5 to 25 percent
*P retention--less than 30 percent
*Ammonium oxalate extractable Al plus 1/2 Fe--0.4 to 1.0
*1500 kPa water (air-dried samples)--10 to 15 percent
*1/3-bar bulk density--1.0 to 1.35 g/cm3
*Reaction--moderately to strongly alkaline
A horizons (and Ap or AB horizons, where present)
*Value--4 or 5 dry, 2 or 3 moist
*Chroma--1 or 2 dry or moist
*Fine-earth texture--loam, fine sandy loam, sandy loam
*Clay content--10 to 25 percent
*Thickness--10 to 30 cm
Bw horizon
*Hue--10YR or 2.5Y dry or moist
*Value--6 or 7 dry, 3 or 4 moist
*Chroma--1 or 2 dry, 2 or 3 moist
*Fine-earth texture--loam, fine sandy loam, clay loam
*Clay content--10 to 30 percent
*Thickness--20 to 50 cm
C horizon(s)
*Hue--neutral, 10YR, 2.5Y dry or moist
*Value--6 to 8 dry, 3 to 6 moist
*Chroma--0 to 3 dry, 1 to 3 moist
*Fine-earth texture--loam, fine sandy loam, silt loam
*Clay content--10 to 27 percent
COMPETING SERIES:
Nanum--aquic conditions at depths below 53 cm; frost free season is 130 to 150 days
Nitcha--dry 90 to 100 days following the summer solstice; do not have aquic conditions at depths between 100 and 150 cm; frost free season is 130 to 150 days
GEOGRAPHIC SETTING:
Elevation--1230 to 1463 m
Climate--semiarid with warm dry summers and cold moist winters
Mean annual air temperature-- 7 to 11 degrees C
Mean annual precipitation--254 to 570 mm
Mean January temperature-- -3 to -2 degrees C
Mean July temperature-- 18 to 21 degrees C
Frost-free period--50 to 110 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Calimus--on terraces and fans; noncalcareous to depths of more than 100 cm; mollic epipedon greater than 50 cm
Fordney--on lake terraces, stream terraces, and fan remnants; noncalcareous to depths of more than 100 cm; sandy particle-size control section
Henley--on terraces; 50 to 100 cm to duripan
Hosley--on low terraces; 50 to 100 cm to duripan; natric horizon
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--moderately well drained
Saturated hydraulic conductivity (Ksat)--moderately high or high
USE AND VEGETATION:
Use--homesites; wildlife habitat; irrigated agriculture including potatoes, alfalfa hay, barley, wheat, oats, pasture and annual hay crops
Vegetation--rabbitbrush, greasewood, saltgrass
DISTRIBUTION AND EXTENT: Klamath and Shasta Valleys and Basins, OR; MLRA 21; moderately extensive
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED:
Klamath County, Oregon, 1967
REMARKS:
Diagnostic horizons and features in this pedon
*Mollic epipedon--Ap, A, AB horizons
*Cambic horizon--Bw horizon
*Particle-size control section--zone from 25 to 100 cm
*Aquic conditions--C2 horizon
*Redoximorphic features--C2 horizon
*Volcanic glass--all horizons
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data. The superactive cation exchange activity class was confirmed by lab sample S2015OR035011.
05/2022: The classification was changed from fine-loamy, mixed, superactive, mesic Typic Haploxerolls to fine-loamy, mixed, superactive, mesic Vitrandic Haploxerolls based on characterization data of S2015OR035011.
ADDITIONAL DATA:
NASIS SITE ID--S1967OR035003; NASIS PEDON ID--S1967OR035003
Characterization data on 2 profiles (S67 Oreg. 18-3 and 18-6) reported in Riverside Soil Survey Laboratory report for Laki soils sampled in Klamath county, Oregon, 1967. Profile 18-3 is the type location.
Characterization data from Kellogg Soil Survey Laboratory on 1 profile (lab sample no. 16N295; NASIS site and pedon ID S2015OR035033) sampled in 2015 includes andic soil properties.
National Cooperative Soil Survey
U.S.A.