LOCATION SCOTLANDVILLE LAEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, active, thermic Oxyaquic Glossudalfs
TYPICAL PEDON: Scotlandville silt in an area of Scotlandville silt, 1 to 3 percent slopes, in hayland (colors are for moist soil).
Ap--0 to 20 centimeters (0 to 8 inches); dark yellowish brown (10YR 4/4), silt; weak fine granular structure; very friable; many fine and medium roots throughout; common very fine low continuity vesicular pores; 25 percent brown (10YR 5/3) silt coats throughout and 2 percent very dark grayish brown (10YR 3/2) manganese or iron-manganese stains throughout; very strongly acid; clear smooth boundary. (0 to 25 centimeters (0 to 10 inches) thick)
E--20 to 30 centimeters (8 to 12 inches); brown (10YR 5/3), silt loam; weak medium granular structure; very friable; many very fine and fine roots throughout; common very fine low continuity discontinuous tubular pores; 2 percent faint pale brown (10YR 6/3) silt coats throughout; 1 percent fine distinct irregular very dark gray (10YR 3/1) iron-manganese masses throughout; 1 percent fine worm casts throughout; strongly acid; clear smooth boundary. 0 to 36 centimeters (0 to 14 inches) thick)
Bt1--30 to 53 centimeters (12 to 21 inches); dark yellowish brown (10YR 4/4), silty clay loam; moderate medium subangular blocky structure; friable; many very fine and fine roots between peds; 15 percent prominent dark yellowish brown (10YR 3/4) clay films on faces of peds and in pores; 3 percent fine and medium prominent irregular very dark gray (10YR 3/1) iron-manganese masses between peds; 1 percent fine prominent irregular yellowish red (5YR 4/6) masses of oxidized iron between peds; strongly acid; gradual wavy boundary.
Bt2--53 to 84 centimeters (21 to 33 inches); brown (7.5YR 4/4), silt loam; moderate medium subangular blocky structure; friable; common fine roots throughout; common fine moderate continuity discontinuous tubular pores; 10 percent continuous prominent dark brown (7.5YR 3/3) clay films on faces of peds and in pores and 3 percent continuous distinct yellowish brown (10YR 5/4) silt coats on vertical faces of peds; 1 percent fine prominent irregular yellowish red (5YR 5/8) masses of oxidized iron on faces of peds; strongly acid; gradual wavy boundary. (Combined thickness of the Bt horizon is 36 to 124 centimeters (14 to 49 inches))
Bt/E1--84 to 119 centimeters (33 to 47 inches); 85 percent brown (7.5YR 4/4) and 15 percent yellowish brown (10YR 5/4), silt loam; moderate medium subangular blocky structure; friable; common very fine and fine roots throughout and common medium roots between peds; common very fine moderate continuity discontinuous tubular pores; 25 percent discontinuous distinct dark brown (7.5YR 3/3) clay films on faces of peds and in pores; 1 percent fine prominent irregular very dark gray (10YR 3/1) iron-manganese masses between peds; moderately acid; gradual irregular boundary.
Bt/E2--119 to 140 centimeters (47 to 55 inches); 70 percent brown (7.5YR 4/4) and 30 percent pale brown (10YR 6/3), silt loam; weak coarse prismatic parting to moderate medium subangular blocky structure; friable; common very fine and fine roots throughout and common medium roots between peds; common very fine and fine moderate continuity discontinuous tubular pores; 30 percent distinct brown (7.5YR 4/3) clay films on faces of peds and in pores and 2 percent distinct pale brown (10YR 6/3) silt coats on faces of peds; 1 percent fine faint prominent irregular very dark gray (10YR 3/1) iron-manganese masses throughout; 1 percent fine faint distinct irregular strong brown (7.5YR 5/6) masses of oxidized iron on faces of peds; strongly acid; gradual irregular boundary.
Bt/E3--140 to 183 centimeters (55 to 72 inches); 80 percent yellowish brown (10YR 5/6) and 20 percent light brownish gray (10YR 6/2), silt loam; weak coarse prismatic parting to weak fine subangular blocky structure; friable; common very fine and fine roots between peds; many fine and medium moderate continuity discontinuous tubular pores; 25 percent discontinuous distinct brown (7.5YR 4/4) clay films on faces of peds and in pores and 20 percent continuous distinct light gray (10YR 7/1) silt coats on faces of peds; 5 percent medium faint irregular yellowish brown (10YR 5/4) iron depletions throughout; 3 percent medium and coarse distinct irregular strong brown (7.5YR 5/8) masses of oxidized iron on faces of peds; 1 percent fine distinct spherical very dark gray (10YR 3/1) iron-manganese masses throughout; strongly acid; abrupt smooth boundary. (Combined thickness of the Bt/E horizon is 23 to 145 centimeters (9 to 57 inches))
2BC--183 to 211 centimeters (72 to 83 inches); 80 percent yellowish brown (10YR 5/6) and 20 percent light brownish gray (10YR 6/2), silt loam; weak medium subangular blocky structure; friable; many fine and medium moderate continuity discontinuous tubular pores; 1 percent continuous distinct light gray (10YR 7/1) silt coats on all faces of peds; 5 percent fine and medium distinct irregular strong brown (7.5YR 5/8) masses of oxidized iron throughout; 5 percent medium distinct irregular yellowish brown (10YR 5/4) iron depletions throughout; 2 percent fine and medium prominent spherical weakly cemented black (10YR 2/1) iron-manganese nodules throughout; moderately acid.
TYPE LOCATION: East Baton Rouge Parish, Louisiana; located Intersection of Groom Road and LA Hwy. 964, 0.32 kilometers (0.2 miles) east and 30 meters (100 feet) south into pasture on Jetson Correctional Facility; 30 degrees, 35 minutes, 29.41 seconds N. Latitude; 91 degrees, 12 minutes, 3.69 seconds W. Longitude; Scotlandville, Louisiana USGS 7.5 Minute Quadrangles
RANGE IN CHARACTERISTICS: The thickness of the solum ranges from 76 to more than 254 centimeters (30 to more than 100 inches). In the upper 76 centimeters (30 inches), at least 50 percent of the effective cation-exchange capacity is occupied by exchangeable aluminum.
Ap horizon:
Hue: 10YR or 7.5YR,
Value: 3 to 5
Chroma: 2 to 4.
Where the value is 3, this horizon is less than 6 inches thick.
Texture: silt or silt loam
Reaction: very strongly acid to neutral
E horizon, where present:
Hue: 10YR or 7.5YR
Value: 4 to 6
Chroma: 2 to 6
Redoximorphic concentrations: in shades of brown
Texture: silt or silt loam
Reaction: very strongly acid to moderately acid
EB or BE horizon, where present:
Hue: 10YR
Value: 5 or 6
Chroma: 3 to 6
Texture: silt loam
Reaction: very strongly acid to moderately acid.
Bt part of the B/E horizon, and the Bt horizon:
Hue: 10YR or 7.5YR
Value: 4 to 6
Chroma: 4 to 8
Redoximorphic concentrations: shades of brown, yellow and red
Redoximorphic depletions: few to many in shades of gray with chroma of 3 or less
Texture: silty clay loam or silt loam
Reaction: very strongly acid to moderately acid.
BC horizons and 2Bt where present:
Hue: 10YR or 7.5YR
Value: 4 to 6
Chroma: 4 to 8
Texture: silty clay loam, silt loam, or silt
Reaction ranges from very strongly acid to neutral
COMPETING SERIES: These are the
Immanuel and
Texla series.
Immanuel soils have slopes ranging up to 25 percent.
Texla soils have slopes less than 1 percent and are silicieous.
GEOGRAPHIC SETTING:
Landform: nearly level to sloping terraces of Pleistocene age.
Parent material: formed in loess deposits.
Mean annual precipitation: 76 centimeters (60.9 inches)
Mean annual temperature: is 19.8 degrees C. (67.7 degrees F.)
Frost free days: 231 to 247.
GEOGRAPHICALLY ASSOCIATED SOILS:
Calhoun,
Feliciana,
Frost,
Gilbert,
Oprairie, and
Deerford soils.
Calhoun, Frost, and Gilbert soils are poorly drained, gray throughout, and are on lower landscape positions and the Gilbert soils have more than 15 percent exchangeable sodium in the lower B horizon.
Feliciana soils are in higher positions on the landscape and well drained.
Oprairie soils are on lower position on the landscape and have grayish ion depletions within the upper 25 centimeters (10 inches) of the top of the argillic horizon.
Deerford soils have a natric horizon.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: Somewhat poorly
Runoff: low to medium
Saturated Hydraulic Conductivity: moderately high to high
USE AND VEGETATION: Most acreage is used for pasture or urban development.
DISTRIBUTION AND EXTENT: Southeast Louisiana in the Southern Mississippi Valley Silty Uplands (MLRA 134).
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: East Baton Rouge Parish, Louisiana, 2004. Scotlandville soils were formerly included in the Olivier and Loring series.
REMARKS: Diagnostic horizons and features recognized in the typical pedon include:
Ochric Epipedon........... O to 30 centimeters (0 to 12 inches) (Ap and E horizons).
Argillic Horizon.......... 30+ to 183 centimeters (12 to 72 inches) (Bt and Bt/E horizons).
Glossic horizon........... 119 to 183 centimeters (47 to 72 inches), and 203 to 249 centimeters (80 to 98 inches) (Bt/E1 and Bt/E2 horizons)
Lithologic Discontinuity.. 183 centimeters (72 inches) (top of the 2BC horizon).
ADDITIONAL DATA: Lab analyses were run on samples from the typical pedon by NSSL, Lincoln, Nebraska (S04LA-033-001).