LOCATION KONNER WAEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Cumulic Endoaquolls
TYPICAL PEDON: Konner silt loam cropland; on a 1 percent slope at an elevation of 1,580 feet. (Colors are for dry soil unless otherwise noted.)
Ap--0 to 8 inches; brown (10YR 5/3) silt loam, very dark grayish brown (10YR 3/2) moist; moderate fine granular structure; hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; common fine irregular pores; neutral (pH 7.0); abrupt smooth boundary.
A--8 to 22 inches; brown (10YR 5/3) silt clay loam, very dark grayish brown (10YR 3/2) moist; moderate fine and medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; common fine tubular pores; organic coatings in pores; neutral (pH 7.2); abrupt smooth boundary.
BAt--22 to 31 inches; grayish brown (10YR 5/2) silty clay loam, very dark gray (10YR 3/1) moist; moderate medium and coarse platy structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; common fine and medium tubular pores; few faint clay films in pores; slightly alkaline (pH 7.4); abrupt smooth boundary.
Btg1--31 to 48 inches; dark gray (10YR 4/1) silty clay loam, black (10YR 2/1) moist; few prominent yellowish brown (10YR 5/6) redox concentrations; strong fine subangular blocky structure; very hard, friable, moderately sticky and moderately plastic; common very fine and fine roots; common fine and medium tubular pores; continuous distinct clay films on faces of peds and in pores; slightly alkaline (pH 7.6); clear smooth boundary.
Btg2--48 to 60 inches; dark gray (10YR 4/1) silty clay loam, black (10YR 2/1) moist; strong fine and medium subangular blocky structure; very hard, friable, moderately sticky and moderately plastic; few very fine roots; common fine and medium tubular pores; continuous distinct clay films on faces of peds and in pores; slightly alkaline (pH 7.6).
TYPE LOCATION: Klickitat County, Washington; about 50 feet south and 300 feet west of the northeast corner of section 14, T.3N., R.15E. (Latitude 45 degrees, 45 minutes, 05 seconds N and Longitude 121 degrees, 53 minutes, 12 seconds W)
RANGE IN CHARACTERISTICS: These soils are saturated during the winter and spring. Mean annual soil temperature at 20 inches is 48 to 50 degrees F. The mollic epipedon is 30 to more than 40 inches thick. The particle-size control section has less than 10 percent rock fragments and 27 to 35 percent clay. The soil has 10YR or 2.5Y hue. The mollic epipedon has distinct or prominent redox concentrations in the lower part.
The A horizon has value of 4 or 5 dry, 2 or 3 moist and chroma of 2 or 3 dry and moist. Reaction is neutral or slightly acid.
The BAt and Btg horizons have value of 4 or 5 dry, 2 or 3 moist and chroma commonly of 1 or 2 but ranges to 3. Texture is silty clay loam or clay loam. Reaction is slightly acid to slightly alkaline.
The 2C horizon, when present, has value of 5 or 6 dry and chroma of 2 or 3. Texture is sandy clay loam, clay loam or silty clay loam. Reaction is slightly acid to slightly alkaline.
COMPETING SERIES: These are the Coland, Comfrey, Delft, Excello, Gielow, Glencoe, Gus, James Canyon, Keddie, Kimmerling, Lundlake, McClave, Peoh, Romnell, Roundval, Shandep and Wenas series.
Coland soils - chroma of 0 or 1 throughout; aquic conditions at a depth of 0 to 12 inches
Comfrey soils - chroma of 1 or neutral in A horizon; secondary carbonates between a depth of 18 and 60 inches or more; do not have a Btg horizon
Delft soils - secondary carbonates between a depth of 18 and 60 inches or more; do not have a Btg horizon
Excello soils - chroma of 1 or less throughout; mean annual soil temperature of 54 to 59 degrees F.; do not have a Btg horizon
Gielow soils - mean annual soil temperature of 55 to 59 degrees F.
Glencoe soils - chroma of 1 or neutral in A horizon; secondary carbonates between a depth of 30 and 60 inches or more; do not have a Btg horizon
Gus soils - depth to redox features is 0 to 18 inches; solum depth is less than 38 inches; secondary carbonates between a depth of 0 to 24 inches; do not have a Btg horizon
James Canyon soils - particle-size control section with18 to 27 percent clay and 15 to 35 percent rock fragments; do not have a Btg horizon
Keddie soils - particle-size control section with 18 to 27 percent clay; redox features at a depth of 0 to 15 inches; do not have a Btg horizon
Kimmerling soils - slightly to moderately micaceous; do not have a Btg horizon
Lundlake soils - particle-size control section with 20 to 27 percent clay; depth to secondary carbonates is 30 to 74 inches; do not have a Btg horizon
McClave soils - solum depth less than 50 inches; do not have a Btg horizon; 90 to 100 percent base saturation
Peoh soils - solum depth of 24 to 40 inches; do not have a Btg horizon
Romnell soils - secondary carbonates at a depth of 30 to 55 inches; 24 to 40 inches to firm basal glacial till
Roundval soils - have a mean annual soil temperature of 55 to 59 degrees F.
Shandep soils - 40 to 60 inches to loamy sand substratum; chroma of 1 or less throughout; do not have a Btg horizon
Wenas soils - depth to loamy sand substratum is 40 to over 60 inches; do not have a Btg horizon
GEOGRAPHIC SETTING: Konner soils are in drainageways, basins and flood plains, and on the perimeters of lakes at elevations of 1,500 to 2,500 feet. Slopes are 0 to 3 percent. They formed in mixed alluvium. These soils are in a continental climate having dry summers and cool, most winters. The mean annual precipitation is 15 to 22 inches. The average January temperature is 26 degrees F. and the average July temperature is 68 degrees F. The mean annual temperature is 46 to 48 degrees F. The frost-free season is 90 to 120 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Munset, Narcisse and Peone soils. Munset soils are 20 to 40 inches to a lithic contact and are in depressional areas on plateaus. Narcisse soils are coarse-loamy and are on flood plains. Peone soils are fine-silty and are in depressions adjacent to lakes.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow runoff; slow permeability. These soils are subject to occasional flooding for long duration.
USE AND VEGETATION: These soils are used for livestock grazing, small grain, alfalfa and grass. Native vegetation is tufted hairgrass, reed canarygrass, red top, sedges, reeds, rushes, willows, aspen and hawthorne.
DISTRIBUTION AND EXTENT: Central and Northeastern Washington; MLRA 8 and 43A. Series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Spokane County, Washington, 1964.
REMARKS: Diagnostic horizon and features recognized in this pedon are:
Mollic epipedon - from the surface to 60 inches with an assumed irregular decrease in organic carbon with depth
Aquic moisture regime
Too little clay increase in the Btg horizon to qualify as an argillic horizon
Particle-size control section the zone from 10 to 40 inches
This revision 3/03 reflects a change in the type location; moving from Spokane County to Klickitat County, WA. The revision is based on extensive evaluation within the Spokane County update survey area and supporting lab data from the associated Clarkia series. The revision has resulted in the newly proposed Kronquist series reflecting isotic mineralogy, frigid soil temperature and an Aquandic subgroup. In addition, based on further MLRA project leader field evaluation, the updated Spokane concept will also apply to Stevens County. As a result of this change, the modal concept of the Konner series has been moved to Klickitat County, WA. The Klickitat County pedon appears to have aquic conditions at a greater depth than that required for the Aquolls classification resulting in consideration of a relocation of the type location to Stevens County.