LOCATION MOODY SD+IA ID MN NEEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Udic Haplustolls
TYPICAL PEDON: Moody silty clay loam, on a northwest-facing facing, convex, 2 percent slope in a cultivated field (When described the soil was moist to 35 inches and dry below. Colors are for dry soil unless otherwise noted.)
Ap--0 to 10 inches; dark grayish brown (10YR 4/2) silty clay loam, very dark brown (10YR 2/2) moist; weak fine granular structure; hard, friable, slightly sticky and slightly plastic; slightly acid; abrupt smooth boundary. (5 to 12 inches thick)
Bw1--10 to 17 inches; grayish brown (10YR 5/2) silty clay loam, very dark grayish brown (10YR 3/2) moist; weak medium prismatic structure parting to moderate medium subangular blocky; hard, friable, slightly sticky and slightly plastic; common fine pores; neutral; clear wavy boundary.
Bw2--17 to 29 inches; brown (10YR 5/3) silty clay loam, weak medium and coarse prismatic structure parting to weak medium and coarse subangular blocky; hard, friable, common 10YR 3/3 coatings on faces of peds; slightly sticky and slightly plastic; few fine pores; neutral; gradual wavy boundary.
Bw3--29 to 35 inches; brown (10YR 5/3) silty clay loam, brown (10YR 4/3) moist; weak coarse prismatic structure parting to weak medium and coarse subangular blocky; hard, friable, slightly sticky and slightly plastic; few fine pores; neutral; clear wavy boundary. (Combined Bw horizons is 15 to 35 inches thick.)
Bk--35 to 48 inches; light yellowish brown (2.5Y 6/4) silt loam, light olive brown (2.5Y 5/4) moist; few fine prominent yellowish brown (10YR 5/6) redox concentrations and gray (5Y 6/1) redox depletions; weak coarse subangular blocky structure; slightly hard, friable; common fine and medium accumulations of calcium carbonate; strong effervescence; moderately alkaline; gradual wavy boundary. (8 to 20 inches thick)
C--48 to 60 inches; very pale brown (10YR 7/4) silt loam, light olive brown (2.5Y 5/4) moist; few fine prominent gray (5Y 6/1) redox depletions, yellowish brown (10YR 5/6) and very dark brown (10YR 2/2) redox concentrations; massive; slightly hard, friable; few fine accumulations of calcium carbonate; strong effervescence; moderately alkaline.
TYPE LOCATION: Moody County, South Dakota; about 3 miles west and 2 miles south of Trent; located about 1440 feet north and 118 feet west of the southeast corner of sec. 20, T. 105 N., R. 49 W.
RANGE IN CHARACTERISTICS:
Soil moisture: Ustic moisture regime.
Mean annual soil temperature: 50 to 57 degrees F
Depth to secondary calcium carbonate: from 30 inches.
Thickness of the mollic epipedon: 10 to 20 inches (includes the Ahorizon and extends into the B horizon of most pedons.)
Particle-size control section (weighted average): silty clay loam
Clay content: 24 to 35 percent
Sand content: less than 3 percent fine or coarser sand
A horizon:
Hue: 10YR
Value: 3 or 4 and 2 or 3 moist
Chroma: 1 or 2
Texture: silty clay loam, silt loam or loam some pedons
Reaction: moderately acid to neutral
Thickness: 5 to 12 inches
Bw horizon:
Hue: 10YR or 2.5Y
Value: 3 to 5 and 2 to 4 moist (lower part 5 or 6 and 3 to 5 moist)
Chroma: 2 or 3 (lower part 2 to 4)
Texture: silty clay loam in the upper part and silty clay loam or silt loam in the lower part
Clay content: 24 to 35 percent
Reaction: moderately acid to neutral
Thickness: 15 to 35 inches
Bk horizon:
Hue: 10YR or 2.5Y
Value: 5 to 7 and 4 to 6 moist
Chroma: 2 to 4
Texture: silt loam or silty clay loam
Clay content: 24 to 35 percent
Calcium carbonate equivalent: greater than 15 percent and more than 5 % than the underlying horizon
Reaction: slightly or moderately alkaline
Thickness: 8 to 20 inches
C horizon:
Hue: 10YR or 2.5Y
Value: 5 to 7 and 4 to 6 moist
Chroma: 2 to 4
Texture: silt loam or silty clay loam
Calcium carbonate equivalent: 3 to 15 percent
Reaction: slightly or moderately alkaline
Note: It has few to common relict mottles.
COMPETING SERIES: These are the Egan and Splitrock soils have glacial till at depths between 20 and 40 inches. Ihlen soils have a lithic contact between depths of 20 and 40 inches. Nora soils have free calcium carbonates between depths of 13 and 30 inches. Splitrock soils do have loam or clay loam substrata within depths of 40 inches. Wentworth soils typically have more than 3 percent fine or coarser sand in the series control section and have stratified substrata.
GEOGRAPHIC SETTING:
Parent material: loess
Landform: uplands
Slopes: 0 to 17 percent
Mean annual air temperature: 45 to 53 degrees F
Mean annual precipitation: 20 to 28 inches
Growing season: 130 to 170 days
Average growing season precipitation: 17 to 19 inches
Growing degree days are about 2600 to 3500
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Alcester and
Trent soils have a deeper darker mollic epipedon and are on footslopes below the Moody soils.
Belfore soils have a fine textured control section and are on similar landscapes.
Crofton soils do not have a mollic epipedon and are on steeper convex slopes.
Ihlen soils have a lithic contact at depths of 20 and 40 inches and are on similar landscapes.
Splitrock have glacial till at depths of 20 to 40 inches and are on similar landscapes.
Nora soils typically are on the more convex ot more strongly sloping landscape positions.
Whitewood soils have a mollic epipedon more than 24 inches thick and are poorly drained.
DRAINAGE AND PERMEABILITY:
Drainage: Well drained
Permeability: Moderate or moderately slow
Surface Runoff: Low to high
Seasonal High Water Table: greater than 6 feet
USE AND VEGETATION: Largely used to grow corn, soybeans, small grains and alfalfa. Native grasses are big bluestem, little bluestem, green needlegrass, sideoats grama, blue grama, and sedges.
DISTRIBUTION AND EXTENT: Southeastern South Dakota, southwestern Minnesota, northwestern Iowa and northeastern Nebraska; LRR M Central Feed Grains and Livestock Region, MLRA 102B Loess Uplands and Till Plains; large extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Grant County, South Dakota, 1922.
REMARKS: Diagnostic horizons and features recognized in this pedon are: Particle-size control section: The zone from 10 to 40 inches. (Ap, Bw, and Bk horizons); mollic epipedon: The zone from 0 to 17 inches. (Ap and Bw1 horizons); cambic horizon: the zone from 17 to 48 inches. Taxonomic Version: Eighth edition, 1998
ADDITIONAL DATA: For typical pedon - NSSL pedon S83 SD-101-027.
Series T Value: 5
Surface K value: .32
Surface Wind Erodibility Group: 6 or 7
Surface Wind Erodibility Index: 48 or 38