LOCATION FARRENBURG MO
Established Series
Rev. RLT-LJG
02/2013
FARRENBURG SERIES
The Farrenburg series consists of very deep, moderately well drained soils formed in loamy alluvium on nearly level areas of natural levees or terraces in the Mississippi River Valley. These soils have moderate permeability in the solum and rapid permeability below. Slopes range from 0 to 3 percent. Mean annual temperature is 61 degrees F, and mean annual precipitation is 50 inches.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, thermic Aquic Hapludalfs
TYPICAL PEDON: Farrenburg fine sandy loam - on a 1 percent slope in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; brown (10YR 4/3) fine sandy loam, pale brown (10YR 6/3); weak fine granular structure; very friable; common fine roots; neutral; clear smooth boundary. (6 to 10 inches thick)
E1--8 to 20 inches; yellowish brown (10YR 5/4) fine sandy loam; common fine faint dark yellowish brown (10YR 3/4) and few fine distinct light brownish gray (10YR 6/2) mottles; weak fine granular structure; very friable; few fine roots; neutral; clear smooth boundary.
E2--20 to 32 inches; yellowish brown (10YR 5/4) fine sandy loam; common fine distinct light brownish gray (10YR 6/2) mottles; weak fine subangular blocky structure; very friable; slightly acid; clear smooth boundary. (Combined thickness of the E horizons is 4 to 26 inches.)
Bt1--32 to 40 inches; dark yellowish brown (10YR 4/4) sandy clay loam; common fine distinct light brownish gray (10YR 6/2) mottles; weak fine subangular blocky structure; friable; few faint clay films on faces of peds; strongly acid; clear smooth boundary.
Bt2--40 to 52 inches; yellowish brown (10YR 5/4) sandy clay loam; common medium distinct light brownish gray (10YR 6/2) mottles; moderate fine subangular blocky structure; friable; few faint clay films on faces of peds; very strongly acid; clear smooth boundary. (Combined thickness of the Bt horizons is 8 to 24 inches.)
BC--52 to 60 inches; mottled brown (7.5YR 5/4) and light brownish gray (10YR 6/2) sandy loam; weak fine subangular blocky structure; friable; very strongly acid. (5 to 15 inches thick)
2C--60 to 73 inches; weakly stratified brown (10YR 5/3) and yellowish brown (10YR 5/8) sand, common fine faint pale brown and few coarse distinct brown (7.5YR 4/4) mottles; single grain; loose; moderately acid.
TYPE LOCATION: Scott County, Missouri; just west of Crowder; 1100 feet west and 400 feet south of the northeast corner, sec. 30, T. 27 N., R. 13 E. Latitude 36 degrees, 57 minutes, 37.4 seconds N., longitude 89 degrees, 41 minutes, 17.0 seconds W., NAD83.
RANGE IN CHARACTERISTICS: The Ap horizon has hue of 10YR, value of 3 or 4, 6 or more dry, and chroma of 3 or 4. It is fine sandy loam, loamy fine sand or loam.
The E horizon has hue of 10YR or 7.5YR, value of 4 or 5 and chroma of 4 through 6. It is fine sandy loam, sandy loam, or loam. Reaction is very strongly acid to neutral.
The Bt horizon and BC horizons have hue of 10YR or 7.5YR, value of 4 to 6, and chroma of 3 to 6 and mottles with hue of 10YR, value of 4 to 6, and chroma of 2 to 4. The Bt horizon is clay loam, sandy clay loam, or loam.
The BC horizon is sandy loam or loamy sand. Reaction is very strongly acid to medium acid. Some pedons have B/E horizons, but the silt coatings (E) are thin and discontinuous on the faces of the peds.
The 2C horizon has hue of 10YR, value of 4 to 6, and chroma of 2 to 4. It commonly is stratified sand and loamy sand with thin strata of fine sandy loam, sandy loam, loam, or sandy clay loam. It is moderately acid to neutral.
COMPETING SERIES: These are the
Bathel and
Bolling series. Similar series in other families are the
Askew,
Broseley,
Center,
Coteau,
Fred,
Frizzell,
Longview,
Tutwiler, and
Vidrine. Bathel soils are somewhat poorly drained. Bolling soils have an active CEC/clay ratio. Askew, Center, Coteau, Fred, and Longview soils are fine-silty. Broseley soils lack mottles with chroma of 2 or less in the upper 30 inches. Frizzell, Tutwiler, and Vidrine soils are coarse-silty.
GEOGRAPHIC SETTING: Farrenburg soils occupy nearly level areas of natural levees or terraces in the Mississippi River Valley. Slope gradients range from 0 to about 3 percent. These soils formed in loamy alluvium. The mean annual temperature varies from 58 to 64 degrees F, and the mean annual precipitation varies from 45 to 54 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the competing
Broseley series, and the
Bosket,
Canalou,
Dundee,
Gideon,
Lilbourn,
Sikeston, and
Wardell series. Broseley soils are on similar landscapes. Bosket soils are better drained and are higher in the landscape than Farrenburg soils. Canalou soils are on similar landscapes but do not have argillic horizons. Dundee, Gideon, Lilbourn, Sikeston, and Wardell soils have dominant chroma of 2 or less and are on nearly level or level areas below the Farrenburg soils.
DRAINAGE AND PERMEABILITY: Moderately well drained. Runoff is low. Permeability is moderate.
USE AND VEGETATION: Nearly all Farrenburg soils are cleared and cropped to soybeans, cotton, corn, grain sorghum, and small grains. Native vegetation is mixed hardwoods.
DISTRIBUTION AND EXTENT: The Mississippi River Valley (MLRA 131) of southeastern Missouri. The series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: AUBURN, ALABAMA
SERIES ESTABLISHED: New Madrid County, Missouri, 1974.
REMARKS: Diagnostic horizons and features recognized in this series are: ochric epipedon - the zone from the surface of the soil to a depth of 32 inches (Ap, E1, and E2 horizons); argillic horizon - the zone from approximately 32 to 52 inches (Bt1 and Bt2 horizons).
National Cooperative Soil Survey
U.S.A.