LOCATION DISAGE WA
Established Series
Rev. BJG/HRG/KWH
10/2011
DISAGE SERIES
The Disage series consists of shallow, well drained soils formed in residuum and colluvium from basalt, with additions of loess, on ridgetops and hill slopes. Slopes are 3 to 60 percent. Average annual precipitation is about 8 inches and average annual temperature is about 50 degrees F.
TAXONOMIC CLASS: Clayey-skeletal, smectitic, mesic Lithic Xeric Haplargids
TYPICAL PEDON: Disage very cobbly loam- rangeland, on a 25 percent south-facing slope at an elevation of 1,750 feet. (Colors are for dry soil unless otherwise stated. All textures are apparent field textures.)
A--0 to 4 inches; brown (10YR 5/3) very cobbly loam, dark brown (10YR 3/3); weak fine and medium granular structure; slightly hard, friable, nonsticky and slightly plastic; many very fine roots; common very fine irregular pores; 20 percent pebbles and 20 percent cobbles; neutral (pH 7.2); abrupt smooth boundary. (2 to 4 inches thick)
BAt--4 to 9 inches; brown (7.5YR 5/4) very gravelly clay loam, brown (7.5YR 4/4) moist; moderate fine and medium subangular blocky structure; hard, firm, sticky and plastic; common very fine and few medium roots; common very fine and few fine tubular pores; few faint dark brown (7.5YR 3/2) clay films on faces of peds; 40 percent pebbles, 5 percent cobbles; neutral (pH 7.2); clear wavy boundary. (3 to 6 inches thick)
Bt1--9 to 14 inches; yellowish brown (10YR 5/4) very gravelly clay loam, dark yellowish brown (10YR 3/4) moist; moderate fine and medium subangular blocky structure; hard, firm, sticky and plastic; common very fine and few medium roots; common fine and few medium tubular pores; few distinct dark yellowish brown (10YR 3/4) clay films on faces of peds; 30 percent pebbles, 20 percent cobbles; neutral (pH 7.2); clear wavy boundary.
Bt2--14 to 18 inches; yellowish brown (10YR 5/6) extremely cobbly clay loam, dark yellowish brown (10YR 3/6) moist; moderate fine and medium subangular blocky structure; hard, firm, sticky and plastic; few medium roots; few fine and few medium tubular pores; few distinct dark yellowish brown (10YR 3/4) clay films on faces of peds; 35 percent pebbles, 40 percent cobbles; neutral (pH 7.2); abrupt irregular boundary. (Combined thickness of Bt horizon is 6 to 10 inches)
R--18 inches; basalt bedrock.
TYPE LOCATION: Kittitas County, Washington, about 350 feet west and 1,900 feet south of the northeast corner of section 28, T. 15 N., R. 22 E.; USGS Doris topographic quadrangle; Lat. 46 degrees 45' 41" N. and Long. 120 degrees 03' 55" W.
RANGE IN CHARACTERISTICS: The average annual soil temperature at the lithic contact ranges from 50 to 56 degrees F. These soils are dry in all parts of the moisture control section more than half of the time. The particle-size control section averages 35 to 50 percent clay in the fine earth fraction and 35 to 55 percent coarse fragments by volume. Organic matter is estimated to range from 0.5 to 1 percent. Solum thickness and depth of bedrock ranges from 14 to 20 inches.
The A horizon has a value of 4 or 5 dry, and a chroma of 2 or 3 moist.
The BAt horizon is a very gravelly clay loam or very cobbly clay loam.
The Bt horizons have hue of 10YR or 7.5YR, chroma of 3 through 5 dry or moist. They are very gravelly clay loam, extremely cobbly clay loam, or very cobbly clay. Structure is moderate to strong subangular blocky or prismatic.
COMPETING SERIES: These are the
Burrita,
Grumblen,
Jung,
Loomis, and
Rocconda (T) series. Burrita soils are moderately or strongly alkaline throughout. Grumblen soils have carbonates in the lower argillic horizon and are moderately alkaline throughout. Jung soils have moderately alkaline argillic horizons with free carbonates in the lower portion. Loomis soils are 8 to 14 inches to bedrock. Rocconda soils are mildly or moderately alkaline and have mainly channers in the control section.
GEOGRAPHIC SETTING: Disage soils are on ridgetops and hill slopes and have slopes of 3 to 60 percent. These soils formed in residuum and colluvium from basalt and some loess. Elevations are 500 to 2,000 feet. These soils are in an arid climate with hot dry summers and cool moist winters. The mean annual precipitation ranges from 6 to 9 inches. The mean January temperature is about 29 degrees F.; the mean July temperature is about 50 degrees F.; and the mean annual temperature is about 50 degrees F. The frost-free season is 135 to 195 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Fortyday,
Drino,
Kiona,
Nevo, and
Sohappy series. Drino soils are on hillslopes and are loamy-skeletal and 20 to 40 inches to bedrock. Fortyday soils are on ridges and plateau sideslopes and are loamy-skeletal and 12 to 20 inches to a lithic contact. Kiona soils are on hillslopes and colluvial sideslopes and are loamy-skeletal and more than 40 inches deep. Nevo soils are on hillslopes, ridgetops and benches and are loamy-skeletal and 5 to 12 inches to a lithic contact. Sohappy soils are on benches and toeslopes and are coarse-loamy and more than 40 inches deep.
DRAINAGE AND PERMEABILITY: Well drained, medium to very rapid runoff; slow permeability.
USE AND VEGETATION: Rangeland and wildlife habitat. Native vegetation is bluebunch wheatgrass, rock eriogonum and stiff sagebrush.
DISTRIBUTION AND EXTENT: Yakima and Kittitas Counties, Washington. Series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Kittitas County, Washington, Yakima Training Center, 1994.
REMARKS: Diagnostic horizons and features recognized in this pedon are an ochric epipedon from the surface to 9 inches, an argillic horizon from 4 to 18 inches and a lithic contact at 18 inches. The particle-size control section is the zone from 4 to 18 inches (argillic horizon).
National Cooperative Soil Survey
U.S.A.