LOCATION ARBELA MO
Established Series
Rev. FCW-KDV
10/2012
ARBELA SERIES
The Arbela series consists of very deep, poorly drained, moderately slowly permeable soils formed in alluvium. These soils are on flood plains and alluvial fans and have slopes of 0 to 2 percent. Mean annual temperature is 53 degrees F., and mean annual precipitation is 35 inches.
TAXONOMIC CLASS: Fine, smectitic, mesic Argiaquic Argialbolls
TYPICAL PEDON: Arbela silt loam - on a 1 percent slope in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 11 inches; very dark gray (10YR 3/1) silt loam, gray (10YR 5/1) dry; moderate fine granular structure; friable; many fine roots; neutral; abrupt smooth boundary. (Combined thickness of Ap and A horizons is 10 to 16 inches.)
E1--11 to 17 inches; dark gray (10YR 4/1) silt loam; moderate medium platy structure parting to moderate fine granular; friable; few fine roots; slightly acid; clear smooth boundary.
E2--17 to 22 inches; dark grayish brown (10YR 4/2) silt loam; weak medium platy structure parting to moderate fine granular; friable; few fine roots; strongly acid; gradual smooth boundary. (Combined thickness of the E horizon is 6 to 16 inches.)
Btg--22 to 54 inches; dark gray (10YR 4/1) silty clay loam; moderate fine subangular blocky structure; firm; few fine roots; few faint clay films on faces of peds; common fine prominent yellowish brown (10YR 5/6) Fe masses in ped interiors; few dark streaks and fine dark concretions (Fe and Mn oxides); strongly acid; gradual smooth boundary. (15 to 35 inches thick)
BCg--54 to 60 inches; variegated dark gray (10YR 4/1), dark grayish brown (10YR 4/2), gray (10YR 5/1) and dark yellowish brown (10YR 4/4) silty clay loam; weak fine subangular blocky structure; firm; few dark streaks and fine dark concretions (Fe and Mn oxides); slightly acid.
TYPE LOCATION: Scotland County, Missouri; about one mile northwest of Arbela; 830 feet west and 330 feet north of the center of sec. 5, T. 65 N., R. 10 W.
RANGE IN CHARACTERISTICS: Thickness of the solum ranges from 48 to more than 60 inches. These soils have more than 5 percent sand in all parts of the series control section.
The Ap or A horizon has color value of 2 or 3, 4 or 5 dry and chroma of 1 or 2. It typically is silt loam, but includes silty clay loam. Reaction is moderately acid to neutral.
The E horizon has color value of 4 or 5 and chroma of 1 or 2. It is silt loam or silty clay loam. Reaction is strongly acid to slightly acid.
The Btg horizon has hue of 10YR or 2.5Y, value of 4 or 5, and chroma of 1 or 2. There are few to common strong brown to yellowish brown Fe masses. It is silty clay loam or silty clay with a range of 35 to 45 percent clay. It is very strongly acid to moderately acid in the upper part but ranges to neutral in the lower part.
The BCg horizon has hue of 10YR or 2.5Y, value of 4 to 6, and chroma of 1 or 2. It is moderately acid to neutral.
COMPETING SERIES: These are the
Humeston,
Leslie, and
Tetonka series. Humeston soils have value of 3 in the upper part of the Bt horizon. Leslie soils have less than 5 percent sand in the series control section. Tetonka soils have temperature of less than 54 degrees F. in the soil temperature control section, they also are drier in their and moisture control sections.
GEOGRAPHIC SETTING: Arbela soils are on flood plains and alluvial fans. The soils formed in silty alluvium and have slopes of 0 to 2 percent. Mean annual temperature ranges from 52 to 57 degrees F, and mean annual precipitation ranges from 33 to 38 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Chequest,
Colo,
Fatima,
Nodaway,
Wabash, and
Westerville soils. All these soils generally are in lower positions and closer to the stream. Chequest and Wabash soils do not have an E horizon. Colo, Fatima, Nodaway and Westerville soils are fine-silty.
DRAINAGE AND PERMEABILITY: Poorly drained. Runoff is low or medium. Permeability is moderately slow. Where not disturbed, an apparent water table has an upper limit of 0 to 1.5 feet during November to May in most years. It is subject to occasional flooding.
USE AND VEGETATION: Most areas are used for cultivated crops. Some areas are used for meadow. Native vegetation is tall prairie grasses.
DISTRIBUTION AND EXTENT: Northern and West-central Missouri. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Scotland County, Missouri, 1969.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon - the zone from the surface of the soil to a depth of 11 inches (Ap horizon); albic horizon - the zone from approximately 11 inches to 22 inches (E1 and E2 horizons); argillic horizon - the zone from approximately 22 inches to 54 inches (Btg horizon).
National Cooperative Soil Survey
U.S.A.