LOCATION KENTWOOD LAEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, semiactive, thermic Typic Hapludults
TYPICAL PEDON: Kentwood silt loam on a 1 percent slope in a wooded area (Colors are for moist soil unless otherwise stated.)
A--0 to 8 centimeters (0 to 3 inches); dark brown (7.5YR 3/4), silt loam; weak fine granular structure; very friable; many fine and very fine roots throughout; many fine and very fine pores; common fine tubular worm casts; moderately acid; gradual wavy boundary. [5 to 20 centimeters (2 to 8 inches) thick]
AB--8 to 18 centimeters (3 to 7 inches); 60 percent brown (7.5YR 4/3) and 40 percent brown (7.5YR 4/4), silt loam; weak medium subangular blocky structure parting to weak fine subangular blocky; friable; common fine and very fine roots throughout; many fine and very fine pores; many fine tubular worm casts; strongly acid; gradual wavy boundary. [10 to 18 centimeters (4 to 7 inches) thick]
Bt1--18 to 58 centimeters (7 to 23 inches); yellowish red (5YR 4/6), clay loam; moderate medium subangular blocky structure; firm; common fine and very fine roots; common fine and very fine pores; few fine tubular worm casts; moderately acid; gradual wavy boundary
Bt2--58 to 76 centimeters (23 to 30 inches); strong brown (7.5YR 4/6), loam; moderate medium subangular blocky structure; firm; common fine roots; common fine pores; strongly acid; gradual wavy boundary.
Bt3--76 to 109 centimeters (30 to 43 inches); strong brown (7.5YR 4/6), loam; moderate coarse subangular blocky structure parting to moderate medium subangular blocky; firm; few fine roots; common fine pores; 2 percent prominent light yellowish brown (2.5Y 6/3) skeletans on surfaces along root channels; very strongly acid; gradual wavy boundary. [Combined thickness of the Bt horizons is 46 to 107 centimeters (18 to 42 inches)]
2Bt4--109 to 142 centimeters (43 to 56 inches); strong brown (7.5YR 4/6), sandy loam; moderate coarse subangular blocky structure parting to moderate medium subangular blocky; very friable; very few fine roots; 2 percent prominent light yellowish brown (2.5Y 6/3) skeletans on surfaces along root channels; 1 percent fine prominent irregular black (7.5YR 2.5/1) manganese masses with diffuse boundaries; very strongly acid; gradual wavy boundary. [18 to 41 centimeters (7 to 16 inches) thick]
2BC--142 to 175 centimeters (56 to 69 inches); yellowish red (5YR 4/6), loamy sand; weak coarse subangular blocky structure parting to weak medium subangular blocky; very friable; 5 percent very pale brown (10YR 7/3) skeletans on surfaces along root channels; 2 percent gravel by volume, 6 millimeters to 51 millimeters (1/4 to 2 inches) in diameter; strongly acid; clear wavy boundary. [18 to 43 centimeters (7 to 17 inches) thick]
2C--175 to 206 centimeters (69 to 81 inches); very pale brown (10YR 7/3), sand; single grained, loose; yellowish red (5YR 4/6) very friable, loamy fine sand lamellae that are wavy, discontinuous, 1/8 inch to 1/4 inch thick and 1 to 3 inches apart; 3 percent gravel by volume, 6 millimeters to 51 millimeters (1/4 to 2 inches) range from 0 to 5 percent moderately acid.
TYPE LOCATION: East Feliciana Parish, Louisiana; located from Clinton, 1.9 kilometers (1.2 miles) south on LA-67 (Plank Road), to intersection with LA-63; about 19 kilometers (11.8 miles) southeast on LA-63 to sand pit;. about 30 meters (100 feet) southwest between highway and sand pit; 225 meters (750 ft.) south and 337.5 meters (1125 ft.) west of NE corner Sec. 56, T. 3 S., R. 3 E., Latitude: 30 degrees, 44 minutes, 44.50 seconds N. Longitude: 90 degrees, 51 minutes, 30.10 seconds W.
RANGE IN CHARACTERISTICS: Solum thickness is more than 203 centimeters (80 inches). Weighted average clay content ranges from 20 to 34 percent in the particle-size control section, and decreases by 20 percent or more from the maximum within 60 inches of the soil surface. Base saturation is 29 percent at 127 centimeters (50 inches) below the top of the argillic horizon. CEC to clay ratio ranges from 0.31 to 0.33 in the particle-size control section.
A horizon:
Hue: 7.5YR or 10YR
Value: 3 or 4
Chroma: 2 to 4
Thickness of the A is less than 7 inches where the value and chroma are less than 4.
Texture: very fine sandy loam, loam, or silt loam
Reaction: very strongly acid to slightly acid unless limed
E or EB horizon, where present:
Hue: 7.5YR or 10YR
Value: 4 or5
Chroma: 3 to 6
Texture: very fine sandy loam, loam, or silt loam
Reaction: very strongly acid to slightly acid
AB horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6
Chroma: 6 or 8
Texture: fine sandy loam, very fine sandy loam, loam, or silt loam
Reaction: very strongly acid to slightly acid
Bt horizon:
Hue: 5YR or 7.5YR
Value: 4 or 5
Chroma: 4 to 8
Texture: silt loam, fine sandy loam, sandy clay loam, loam, or clay loam
Reaction: very strongly acid to slightly acid
2Bt horizon:
Hue: 5YR or 7.5YR
Value: 4 to 6
Chroma: 6 or 8
Texture: loamy fine sand, sandy loam, loam, or sandy clay loam
Interfingering of clean sand ranges from none to 2 percent
Reaction: very strongly acid to moderately acid
2BC horizon:
Hue: 5YR to 10YR
Value: 4 to 6
Chroma: 4 to 8
Texture: loamy fine sand, sandy loam, or sand
Rock fragments: rounded gravel 6 millimeters to 51 millimeters (1/4 to 2 inches) range from 0 to 5 percent
Interfingering of clean sand ranges from none to 5 percent
Reaction: very strongly acid or strongly acid
2C horizon where present:
Hue: 7.5YR or 10YR
Value: 5 to 8
Chroma: 2 to 8
Texture: sandy loam, loamy fine sand, fine sand, or sand
Rock fragments: rounded gravel 6 millimeters to 51 millimeters (1/4 to 2 inches) range from 0 to 5 percent
Lamellae, where present: few to common,3 millimeters to 6 millimeters (1/8 to 1/4 inch) thick and 2.5 to 8 centimeters (1 to 3 inches) apart.
Reaction: extremely acid to strongly acid
COMPETING SERIES: These are the
Cheaha,
Chesapeake,
Fruithurst,
Montonia,
Rion,
Rome,
Sherless,
Sherwood,
State,
Sugargrove,
Tidings, and
Wickham series.
Cheaha soils have hard sandstone bedrock at a depth of 51 to 102 centimeters (20 to 40 inches).
Chesapeake soils have Bt horizons that have yellowish brown hues of 10YR and have a seasonal high water table between 107 to 183 centimeters (42 to 72 inches).
Fruithurst and Montonia soils have lower silt content, paralithic contact, weathered from metamorphic rock, at a depth of 51 to 102 centimeters (20 to 40 inches) and lithic contact at 102 to 152 centimeters (40 to 60 inches).
Rion soils are
Piedmont soils with lower silt content, and have sola that are 51 to 102 centimeters (20 to 40 inches) deep.
Rome soils are Piedmont soils with lower silt content, and have mica flakes throughout the solum.
Sherless soils have paralithic contact at a depth of 51 to 102 centimeters (20 to 40 inches) and have sandstone fragments throughout.
Sherwood soils have lithic contact at a depth of 76 to 152 centimeters (30 to 60 inches).
State soils have lower silt content, up to 20 percent mica throughout, seasonal high water table from 107 to 183 centimeters (42 to 72 inches), and solum thickness is less than 152 centimeters (60 inches).
Sugargrove soils have lithic contact at a depth of 102 centimeters (40 inches) or more.
Tidings soils have paralithic contact at a depth of 102 to 152 centimeters (40 to 60 inches).
Wickham soils have lower silt content, solum thickness less than 152 centimeters (60 inches) and mica flakes throughout.
GEOGRAPHIC SETTING:
Parent material: derived from silty mantle, less than 1.2 meters (4 feet) thick, and the underlying loamy alluvial sediments of late Pleistocene age
Landform: stream terraces
Flooding: none to rare
Slope: 0 to 5 percent
Elevation: 15 to 52.5 meters (50 to 175 feet)
Mean annual Temperature: 17 to 21 degrees C. (63 to 70 degrees F)
Mean annual precipitation: 1397 to 1651 millimeters (55 to 65 inches)
Frost Free Days: 240 to 260 days
Thornthwaite annual P-E indices: 68 to 80.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Dexter,
Fluker,
Gilbert,
Guyton,
Oprairie, and
Satsuma soils.
Dexter soils are on similar positions, are fine-silty, and have higher base saturation in the control section.
Fluker soils are somewhat poorly drained, have a fragipan, and are on lower landscape positions.
Guyton and Gilbert soils are fine-silty, poorly drained, gray throughout, and are on lower landscape positions.
Oprairie soils are somewhat poorly drained and have a fine-silty control section.
Satsuma soils are somewhat poorly drained and in slightly lower positions on the landscape.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: well drained.
Saturated hydraulic conductivity: moderate
Runoff: negligible on 0 to 1 percent slopes, very low on 1 to 3 percent slopes, and low on 3 to 5 percent slopes
USE AND VEGETATION: Used mainly for woodland and improved pasture. A few areas are cropped to soybeans. Native vegetation is mixed pine and hardwoods forest consisting of loblolly and shortleaf pine, sweetgum, and various oak species. Mulberry, white bay, American holly, and sassafras are also common. The understory vegetation consists of yaupon, greenbriar, American beautyberry and various perennial grasses and forbs.
DISTRIBUTION AND EXTENT: In the Eastern Gulf Coast Flatwoods (MLRA 152A) of southeast Louisiana. The series is of limited extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: East Baton Rouge Parish, Louisiana, 2006. Kentwood soils were formerly included in the Kenefick series.
REMARKS: Diagnostic horizons and features recognized in the typical pedon include:
Ochric Epipedon........... 0 to 18 centimeters (0 to 7 inches) (A and AB horizons).
Argillic Horizon.......... 18 to 142 centimeters (7 to 56 inches) (Bt horizons).
Lithologic Discontinuity.. 109 centimeters (43 inches) (top of the 2Bt horizon)
Lamellae.................. 175+ centimeters (69 inches) (2C horizon)
ADDITIONAL DATA: Lab analyses were run on samples from the typical pedon by NSSL, Lincoln, Nebraska (S06LA-037-001).