LOCATION DOGER SD+NEEstablished Series
TAXONOMIC CLASS: Sandy, mixed, mesic Entic Haplustolls
TYPICAL PEDON: Doger loamy fine sand - with a plane slope of 1 percent in native grass. When described the soil was dry to a depth of 26 inches. (Colors are for dry soil unless otherwise stated.)
A1--0 to 12 inches; very dark grayish brown (10YR 3/2) loamy fine sand, very dark brown (10YR 2/2) moist; weak medium and fine subangular blocky structure parting to weak fine granular; soft, loose; slightly acid; clear smooth boundary.
A2--12 to 19 inches; dark grayish brown (10YR 4/2) loamy fine sand, very dark grayish brown (10YR 3/2) moist; weak coarse prismatic structure parting to weak medium and fine subangular blocky; soft, loose; slightly acid; gradual smooth boundary. (Combined A horizons is 14 to 30 inches thick.)
AC--19 to 26 inches; dark grayish brown (10YR 4/2) loamy fine sand, very dark grayish brown (10YR 3/2) moist; weak medium and coarse subangular blocky structure breaking to single grain; soft; neutral; gradual wavy boundary. (6 to 20 inches thick)
C1--26 to 32 inches; brown (10YR 5/3) loamy fine sand, dark grayish brown (10YR 4/2) moist; single grain; loose; neutral; gradual wavy boundary. (4 to 10 inches thick)
C2--32 to 60 inches; pale brown (10YR 6/3) fine sand, grayish brown (10YR 5/2) moist; single grain; loose; neutral.
TYPE LOCATION: Todd County, South Dakota; 500 feet south and 75 feet east of the northwest corner of sec. 13, T. 37 N., R. 25 W.
RANGE IN CHARACTERISTICS: Thickness of the mollic epipedon ranges from 10 to 20 inches. Horizons with color value less than 5.5 dry and 3.5 moist extend to depths of 20 to 50 inches, but the organic carbon content at depths greater than 20 inches is less than .60 percent. These soils typically lack free carbonates throughout but some pedons have carbonates between depths of 40 and 60 inches.
The A horizon has hue of 10YR, value of 3 to 5 and 2 or 3 moist, and chroma of 1 to 3. It is a loamy fine sand or loamy sand but locally is fine sand where winnowing has occurred. It ranges from moderately acid to neutral.
The AC horizon has hue of 10YR, value of 3 to 5 and 2 or 3 moist, and chroma of 1 to 3. It is loamy fine sand, loamy sand, or fine sand. It ranges from slightly acid to slightly alkaline.
The C horizon has hue of 10YR, value of 5 to 7 and 4 to 6 moist, and chroma of 2 or 3. It is loamy fine sand, loamy sand, or fine sand. It ranges from slightly acid to slightly alkaline.
COMPETING SERIES: These are the Dorrance, Dunday, Heber, Meadin, and Pivot soils in the same family. Dorrance and Heber soils have carbonates above a depth of 40 inches. Dunday soils have moist color value of less than 3.5 at depth of 20 inches or less. Meadin soils contain more gravel throughout the control section. Pivot soils have gravelly coarse sand at depths of 20 to 40 inches.
GEOGRAPHIC SETTING: Doger soils are nearly level to gently sloping on concave surfaces mostly in undulating and rolling landscapes on uplands. Slope gradients are mostly less than 3 percent but range from 0 to 9 percent. The soil formed mostly in windworked materials of fine sand and loamy fine sand texture. Mean annual air temperature ranges from 45 to 52 degrees F, and mean annual precipitation from 17 to 23 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Dunday soils and the Duda, Elsmere, Forestburg, Gannett, Loup, Shue, Tassel, Valentine, and Vetal soils. Dunday, Forestburg, and Vetal soils are on landscapes similar to those of the Doger soils. Forestburg soils have loamy sediments between depths of 20 and 40 inches. Vetal soils are coarse-loamy and have a mollic epipedon thicker than 20 inches. Duda and Valentine soils do not have a mollic epipedon and are on higher portions of the landscape. In addition, Duda soils have sandstone bedrock between depths of 20 and 40 inches. Elsmere soils have mottles in the control section, have a water table, and are on lower parts of the landscape. Gannett and Loup soils are in drainageways and have a high water table. Shue soils have glacial till between depths of 20 to 40 inches, are wetter, and are in swales. Tassel soils have sandstone bedrock above depths of 20 inches and are on steeper and higher parts of the landscape.
DRAINAGE AND PERMEABILITY: Well drained or somewhat excessively drained. Surface runoff is low or very low. Permeability is rapid.
USE AND VEGETATION: Native range and cropland. Alfalfa, spring small grains, corn, and soybeans are the major crops. Little bluestem, prairie sandreed, needleandthread, blue grama, and sideoats grama are the dominant native species.
DISTRIBUTION AND EXTENT: South Dakota and adjoining portions of Nebraska. It is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Denver, Colorado
SERIES ESTABLISHED: Todd County, South Dakota, 1971.
REMARKS: The Doger soils are placed in the Entic rather than Udorthentic Haplustolls because of lower PE Index and annual precipitation.
Diagnostic horizons and features recognized in this soil are: A mollic epipedon in the zone from 0 to 19 inches (A1 and A2 horizons).