LOCATION DEEDALE WATentative Series
TAXONOMIC CLASS: Fine, smectitic, mesic Xeric Endoaquerts
TYPICAL PEDON: Deedale clay loam- irrigated cropland, on a 1 percent slope at an elevation of 1,460 feet. (Colors are for dry soil unless otherwise stated.)
Ap--0 to 6 inches; dark gray (10YR 4/1) clay loam, black (10YR 2/1) moist; moderate medium granular structure parting to moderate fine granular; very hard, firm, slightly sticky and slightly plastic; common very fine, fine and few medium roots; few very fine tubular and common fine irregular pores; 1/2 to 1-inch vertical cracks forming a polyhedron; slight effervescence, moderately alkaline (pH 7.9); abrupt smooth boundary. (4 to 10 inches thick)
A--6 to 12 inches; dark gray (10YR 4/1) clay loam, black (10YR 2/1) moist; moderate fine angular blocky structure parting to moderate fine granular; very hard, firm, slightly sticky and slightly plastic; few very fine, fine and few medium roots; few very fine tubular and common fine irregular pores; slightly effervescence, 3/4-inch vertical cracks; moderately alkaline (pH 7.9); abrupt wavy boundary. (6 to 10 inches thick)
Bssg1--12 to 19 inches; dark gray (10YR 4/1) clay, black (10YR 2/1) moist; moderate medium angular blocky structure parting to moderate fine angular blocky; very hard, firm, very sticky and very plastic; few very fine roots; few very fine tubular and common fine irregular pores; few fine prominent brownish yellow (10YR 6/8) iron accumulations; common white (10YR 8/1) fine seams of lime; many distinct intersecting slickensides; 1/2-inch vertical cracks; slight effervescence, moderately alkaline (pH 7.9); clear wavy boundary.
Bssg2--19 to 25 inches; dark gray (10YR 4/1) clay, black (10YR 2/1) moist; moderate coarse angular blocky structure parting to moderate medium subangular blocky; very hard, firm, very sticky and very plastic; few very fine roots; few very fine tubular and many fine irregular pores; few fine prominent brownish yellow (10YR 6/8) iron accumulations; many distinct intersecting slickensides; 1/4-inch cracks; slightly alkaline (pH 7.8); clear wavy boundary.
Bg1--25 to 31 inches; gray (10YR 5/1) clay, very dark gray (10YR 3/1) moist; moderate coarse angular blocky structure parting to moderate medium subangular blocky; extremely hard, extremely firm, very sticky and very plastic; few very fine roots; common very fine and fine vesicular and irregular pores; common fine prominent dark yellowish brown (10YR 3/6) iron accumulations; slightly alkaline (pH 7.8); clear wavy boundary.
Bg2--31 to 36 inches; grayish brown (2.5Y 5/2) clay, very dark grayish brown (2.5Y 3/2) moist; moderate coarse angular blocky structure parting to moderate medium angular blocky; extremely hard, extremely firm, very sticky and very plastic; common very fine and fine vesicular and irregular pores; common fine prominent yellowish brown (10YR 5/8) iron accumulations; 5 percent gravel; slightly alkaline (pH 7.6); clear wavy boundary.
Bg3--36 to 54 inches; grayish brown (2.5Y 5/2) clay, very dark grayish brown (2.5Y 3/2) moist; moderate coarse angular blocky structure parting to moderate medium angular blocky; extremely hard, extremely firm, very sticky and very plastic; common very fine and fine vesicular and irregular pores; common fine and medium prominent yellowish brown (10YR 5/8) iron accumulations; 5 percent gravel; slightly alkaline (pH 7.6); clear wavy boundary. (Combined Bg horizon is 32 to 46 inches thick)
2Bg4--54 to 60 inches; grayish brown (2.5Y 5/2) extremely gravelly sandy clay loam, very dark grayish brown (2.5Y 3/2) moist; weak fine subangular blocky structure; slightly hard, friable, moderately sticky and moderately plastic; few very fine roots; common prominent yellowish brown (10YR 5/8) iron accumulations; 60 percent gravel and 15 percent cobbles; slightly alkaline (pH 7.6).
TYPE LOCATION: Kittitas County, Washington; about 5 miles southwest of Kittitas, WA., about 400 feet south and 1,200 feet east of the northwest corner of section 19, T. 17 N., R. 18 E.; latitude 46 degrees 57 minutes 16 seconds W. and longitude 120 degrees 30 minutes 42 seconds N.
RANGE IN CHARACTERISTICS: Average annual soil temperature at a depth of 20 inches ranges from 47 to 54 degrees F. There are cracks 1/2 to 1-inch in width and 20 to 30 inches in depth that open and close once each year in the fall after irrigation season. Depth to the uppermost limit of the irrigation-induced water table is 12 to 20 inches. Organic matter is estimated to range from 1 to 5 percent. The particle-size control section has 45 to 60 percent clay. The depth to a very or extremely gravelly 2Bg horizon is between 40 and 60 inches. Base saturation is more than 75 percent. Thickness of the mollic epipedon is more than 40 inches. Reaction is slightly or moderately alkaline.
The Ap and A horizons have value of 3 or 4 dry, 2 or 3 moist, and chroma of 1 or 2, dry or moist.
The Bssg and Bg horizons have hue of 10YR or 2.5Y, value of 4 or 5 dry, 2 or 3 moist, and chroma of 1 or 2 dry or moist. It has distinct or prominent redox concentrations.
The 2Bg4 horizon has hue 2.5Y, value of 4 or 5 dry, 2 or 3 moist, and chroma of 2 or 3 dry or moist. Texture is very gravelly sandy clay loam or extremely gravelly sandy clay loam.
COMPETING SERIES: These are the
Pit and
Rail series.
Pit soils depth to calcium carbonate is 20 to 26 inches; mollic epipedon 20 to 26 inches thick
Rail soils depth to calcium carbonate is 12 to 20 inches; mollic epipedon 12 to 20 inches thick
GEOGRAPHIC SETTING: Deedale soils are on bottomlands and have slopes of 0 to 2 percent. These soils formed in alluvium over flood deposits. Elevation is 1,500 to 2,000 feet. Climate is semiarid with warm, dry summers and cool, moist winters. The mean annual precipitation is 9 to 12 inches. The average January temperature is about 25 degrees F. and the average July temperature is about 69 degrees F. The mean annual temperature is about 48 to 50 degrees F. The frost-free season is 130 to 150 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Brickmill, Mitta, Nanum and Opnish soils. Brickmill soils are on alluvial fans and have more than 45 percent coarse fragments by volume. Mitta soils (on bottomlands and terraces) and Nanum soils (on alluvial fans and terraces) range less than 45 percent clay in the fine earth fraction. Opnish soils are on alluvial fans and are calcareous in all horizons above the 2Btg horizon.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow runoff; slow permeability. This soil has an irrigation-induced water table with its uppermost limit occurring some time between the mid-May to mid-October growing season.
USE AND VEGETATION: This soil is used for irrigated crop production and livestock grazing. Native vegetation is bluebunch wheatgrass, Idaho fescue, Wyoming sagebrush and bitterbrush. When drained and irrigated, hay, oats, wheat, corn, potatoes, and peas are among the crops grown.
DISTRIBUTION AND EXTENT: Central Washington; MLRA 8. The soil is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Kittitas County, Washington, l990. Name is coined.
REMARKS: Diagnostic horizons and features recognized in this pedon include:
Mollic epipedon (pachic) - 0 to 54 inches (Ap, A and Bg horizons).
Redoximorphic features - 12 to 60 inches (Bg horizons)
PSCS - the zone from 10 to 40 inches (part of the A, Bg1, Bg2, Bg3, Bg4 and part of the Bg5 horizon)