LOCATION DAPUE MOEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Fluventic Hapludolls
TYPICAL PEDON: Dapue silt loam - on a 1 percent slope in a fescue pasture at an elevation of 1,090 feet. (Colors are for moist soil unless otherwise stated)
Ap--0 to 9 inches; very dark grayish brown (10YR 3/2) silt loam; brown (10YR 5/3) dry; weak fine granular structure; friable; common fine roots; common very fine irregular and tubular pores; common fine rounded worm casts; strongly acid (pH 5.5); clear smooth boundary.
A--9 to 15 inches; dark brown (10YR 3/3) silt loam; brown (10YR 5/3) dry; weak fine subangular blocky structure; friable; common fine roots; common very fine tubular pores; common fine rounded worm casts; medium acid (pH 5.9); clear smooth boundary. (combined thickness of the Ap and A horizons is 10 to 24 inches)
Bw1--15 to 22 inches; dark yellowish brown (10YR 4/4) silt loam; weak fine subangular blocky structure; friable; common fine roots; common very fine tubular pores; many faint continuous dark brown (10YR 3/3) organic coats on faces of peds and in pores; common fine rounded worm casts; moderately acid (pH 6.0); clear smooth boundary.
Bw2--22 to 35 inches; dark yellowish brown (10YR 4/4) silt loam; weak fine subangular blocky structure; friable; common fine roots; common very fine tubular pores; few faint continuous dark brown (10YR 3/3) organic coats on faces of peds and in pores; few fine rounded worm casts; moderately acid (pH 6.0); clear smooth boundary.
Bw3--35 to 49 inches; brown to dark brown (7.5YR 4/4) silt loam; weak fine subangular blocky structure; friable; few fine roots; common very fine tubular pores; few faint continuous dark brown (10YR 3/3) organic coats on faces of peds and in pores; moderately acid (pH 6.0); clear smooth boundary.
Bw4--49 to 80 inches; 50 percent brown to dark brown (7.5YR 4/4) and 50 percent dark brown (7.5YR 3/4) silt loam; weak fine subangular blocky structure; firm; common very fine tubular pores; slightly acid (pH 6.1). (combined thickness of the Bw horizons is more than 50 inches)
TYPE LOCATION: Laclede County, Missouri; about 12 miles southeast of Lebanon; 200 feet north and 2190 feet west of the SE corner of section 27, T. 34 N., R. 15 W. Russ USGS quadrangle: latitude 37 degress, 37 minutes, 22 seconds N. and longitude 92 degrees, 34 minutes, 1 second W.
RANGE IN CHARACTERISTICS:
Solum Thickness: more than 60 inches
Depth to Bedrock: more than 80 inches
Mollic Epipedon thickness: 10 to 24 inches
Ap horizon
Hue: 10YR
Value: 2 or 3
Chroma: 1 to 3
Fine Earth: silt loam
Rock Fragments: 0 to 5 percent gravel
Reaction: neutral to strongly acid
Thickness: 6 to 10 inches
A horizon
Hue: 10YR
Value: 3
Chroma: 2 or 3
Fine Earth: silt loam
Rock Fragments: 0 to 5 percent gravel
Reaction: neutral to moderately acid
Thickness: 6 to 16 inches
Upper Bw horizon
Hue: 10YR or 7.5YR
Value: 4 or 5
Chroma: 2 to 4
Fine Earth: silt loam, silty clay loam
Rock Fragments: 0 to 5 percent gravel
Reaction: neutral to moderately acid
Thickness: 30 to 50 inches
Lower Bw horizon
Hue: 10YR or 7.5YR
Value: 4 or 5
Chroma: 2 to 4
Fine Earth: silt loam, silty clay loam, loam
Rock Fragments: 0 to 15 percent gravel
Reaction: neutral to moderately acid
Thickness: 0 to 20 inches
COMPETING SERIES: These are no other series in this family.
GEOGRAPHIC SETTING: Dapue soils are on flood plains and low stream terraces. Slopes range from 0 to 3 percent. These soils formed in silty alluvium. Elevations are commonly 700 to 1250 feet. Mean annual temperature ranges from 55 to 58 degrees F., and mean annual precipitation ranges from 40 to 45 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bearthicket, Britwater, Cedargap, Pomme, Racket, Razort and Winnipeg soils. The Bearthicket soils lack dark colored surface horizons and are on similar positions. Britwater, Pomme and Winnipeg soils have argillic horizons and lack dark colored surface horizons. Britwater soils are on stream terraces. Pomme and Winnipeg soils are on foot slopes and strath terraces. Cedargap soils have more than 35 percent rock fragments in the control section and are on flood plains. Racket soils are on flood plains, have dark colored surfaces more than 24 inches thick and have more than 15 percent fine sand and coarser in the control section. Razort soils are on stream terraces and have dark colored surfaces less than 10 inches thick and more than 15 percent fine sand and coarser in the control section.
DRAINAGE AND PERMEABILITY: Well drained. Runoff is very low or low. Permeability is moderate.
USE AND VEGETATION: Most areas are in hay or pasture. A few areas are used for cultivated crops. Original vegetation was mixed grasses and hardwoods.
DISTRIBUTION AND EXTENT: The Ozarks area (MLRAs 116A and 116B) of southern Missouri and possibly Northern Arkansas. Extent is moderate.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Laclede County, Missouri, 1997.
REMARKS: These soils were formerly mapped in the Huntington series in Missouri.
Diagnostic horizons recognized in this profile are:
1) Mollic epipedon: 0 to 15 inches (Ap and A horizons).
2) Cambic horizon: 15 to 80 inches (Bw horizons).
3) Fluventic feature: organic carbon content of 0.3 percent or higher at a depth of 50 inches from the soil surface.
ADDITIONAL DATA: University of Missouri soil characterization laboratory sample number M93-105-19