LOCATION TALOKA OK+AR KS

Established Series
Rev. CS-RGC
12/2015

TALOKA SERIES

The Taloka series consists of very deep, somewhat poorly drained soils that formed in loamy and clayey colluvium and/or alluvium weathered from interbedded shales and sandstone of Pennsylvanian age. These soils are on interfluves and paleoterraces. Slope ranges from 0 to 3 percent. Mean annual precipitation is about 1041 mm (41 inches), and mean annual temperature is about 15 degrees C (60 degrees F).

TAXONOMIC CLASS: Fine, mixed, active, thermic Mollic Albaqualfs

TYPICAL PEDON: Taloka silt loam, in a pasture on a summit of an interfluve, at an elevation of 174 meters (570 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

A--0 to 20 cm (0 to 8 inches); very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; weak medium granular structure; slightly hard, friable; moderately acid; gradual smooth boundary. [15 to 36 cm (6 to 14 inches) thick]

E1--20 to 51 cm (8 to 20 inches); dark grayish brown (10YR 4/2) silt loam, light brownish gray (10YR 6/2) dry; weak fine granular structure; slightly hard, friable; few fine prominent yellowish brown (10YR 5/6) masses of oxidized iron in the matrix; strongly acid; gradual smooth boundary. [13 to 76 cm (5 to 30 inches) thick]

E2--51 to 71 cm (20 to 28 inches); grayish brown (10YR 5/2) silt loam, light gray (10YR 7/2) dry; weak fine granular structure; slightly hard, friable; few fine prominent yellowish brown (10YR 5/6) masses of oxidized iron in the matrix; many fine black (10YR 2/1) manganese concretions in the matrix; common medium bodies of dark yellowish brown (10YR 4/4) clay in lower 2.5 cm (1 inch); strongly acid; abrupt smooth boundary. [13 to 76 cm (5 to 30 inches) thick]

Bt1--71 to 86 cm (28 to 34 inches); dark grayish brown (10YR 4/2) silty clay, grayish brown (10YR 5/2) dry; weak coarse prismatic structure parting to moderate medium blocky; very hard, very firm; thin nearly continuous clay films on faces of peds; many medium prominent yellowish brown (10YR 5/6) and common fine and medium prominent red (2.5YR 4/6) masses of oxidized iron in the matrix; moderately acid; gradual smooth boundary. [10 to 51 cm (4 to 20 inches) thick]

Bt2--86 to 112 cm (34 to 44 inches); brown (10YR 4/3) silty clay loam, brown (10YR 5/3) dry; moderate medium blocky structure; very hard, very firm; dark grayish brown (10YR 4/2) clay films on faces of peds, shiny clay films on tops and bottoms of peds; common medium distinct yellowish brown (10YR 5/6) and prominent strong brown (7.5YR 4/6), and few fine prominent red (2.5YR 5/6) masses of oxidized iron in the matrix; many fine black (10YR 2/1) manganese concretions in the matrix; neutral; gradual smooth boundary. [15 to 51 cm (6 to 20 inches) thick]

Bt3--112 to 152 cm (44 to 60 inches); brown (10YR 4/3) silty clay loam, brown (10YR 5/3) dry; weak medium blocky structure; very hard, firm; dark grayish brown (10YR 4/2) clay films on faces of peds, shiny clay films on tops and bottoms of peds; few fine crystals of gypsum in the matrix; few medium distinct yellowish brown (10YR 5/6) and few medium prominent strong brown (7.5YR 5/6) masses of oxidized iron in the matrix; few fine black (10YR 2/1) manganese concretions in the matrix; neutral; gradual smooth boundary. [25 to 76 cm (10 to 30 inches) thick]

BC--152 to 198 cm (60 to 78 inches); intermingled light gray (10YR 7/1), yellowish brown (10YR 5/6), and strong brown (7.5YR 5/6) silty clay loam; weak medium blocky structure; very hard, firm; many fine crystals of gypsum in the matrix; few fine black (10YR 2/1) manganese concretions in the matrix; neutral.

TYPE LOCATION: Wagoner County, Oklahoma; about 4 miles southeast of Wagoner; NE 1/4 of sec. 2, T. 16 N., R. 18 E.; 275 feet south-southeast where Oklahoma State Highway 2 crosses north section line; USGS Wagoner East, Oklahoma topographic quadrangle; lat. 35 degrees 54 minutes 2.27 seconds N. and long. 101 degrees 22 minutes 22.97 seconds W.; UTM Zone 15, 285836 easting and 3975532 northing; NAD 83.

RANGE IN CHARACTERISTICS:
Combined thickness of the A and E horizon: 41 to 112 cm (16 to 44 inches)
Particle-size control section: averages 35 to 50 percent clay
Other features: Where the A horizon has moist value of less than 3.5, the thickness is less than 10 inches or has less than 1 percent organic matter, or the Bt horizon has less than 50 percent base saturation in some part.

A horizon:
Hue: 10YR
Value: 3, 4 or 5 dry
Chroma: 1 or 2
Texture: silt loam
Clay content: 8 to 25 percent
Sand content: 5 to 30 percent
Reaction: moderately acid to neutral

E horizon:
Hue: 10YR
Value: 4 or 5, 6 or 7 dry
Chroma: 2
Texture: silt loam
Clay content: 8 to 25 percent
Sand content: 3 to 30 percent
Reaction: strongly acid or moderately acid

Bt horizon:
Hue: 10YR or 2.5Y
Value: 3 to 5, 4 to 6 dry
Chroma: 1 to 4
Texture: silty clay loam, clay loam, silty clay, or clay
Clay content: 35 to 60 percent
Sand content: 1 to 25 percent
Reaction: strongly acid to neutral

BC horizon:
Hue: 7.5YR to 2.5Y
Value: 3 to 5, 4 to 6 dry
Chroma: 1 to 4
Texture: clay loam, silty clay loam, silty clay, or clay
Clay content: 35 to 60 percent
Sand content: 5 to 25 percent
Reaction: slightly acid to slightly alkaline

COMPETING SERIES: This is the Parsons series. Parsons soils have a combined thickness of the A horizon and E horizon that is less than 41 cm (16 inches).

GEOGRAPHIC SETTING: Taloka soils are on interfluves and paleoterraces on plains. Slope ranges from 0 to 3 percent. The soils formed in loamy and clayey colluvium and/or alluvium weathered from interbedded shales and sandstone of Pennsylvanian age, and possibly have a thin loess mantle in some pedons. Mean annual precipitation ranges from 940 to 1143 mm (37 to 45 inches). Mean annual temperature ranges from 14 to 17 degrees C (57 to 62 degrees F). Frost-free period is 190 to 220 days. Elevation is 152 to 366 meters (498 to 1200 feet). Thornthwaite Annual P-E Index ranges from 64 to 80.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bates, Choteau, and Dennis soils, and the competing Parsons soils. The fine-loamy Bates soils are well drained and are on steeper slopes. Choteau and Dennis soils have mollic epipedons and are on similar landforms. Parsons soils are on similar landforms.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Somewhat poorly drained. Depth to the top of a perched seasonal high water table ranges from 30 to 61 cm (12 to 24 inches) between November and May in normal years. Potential for surface runoff is moderate or high. Saturated hydraulic conductivity is low. Permeability is very slow.

USE AND VEGETATION: Mainly cultivated to small grains, sorghums, and soybeans. A small amount is used for tame pasture and a minor part is used as native range or hayland. Native vegetation is tall grass prairie.

DISTRIBUTION AND EXTENT: MLRAs 112, 116, and 118 in northeastern Oklahoma, northwestern Arkansas, and southeastern Kansas. The type location is in MLRA 112. The series is of moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana.

SERIES ESTABLISHED: Okfuskee County, Oklahoma; 1940.

REMARKS: Diagnostic horizons and features recognized in this series: Ochric epipedon (mollic intergrade): from the surface to a depth of 20 cm (8 inches) (A horizon).
Albic horizon: from a depth of 20 to 71 cm (8 to 28 inches) (E horizon).
Argillic horizon: from a depth of 71 to 152 cm (28 to 60 inches) (Bt horizon).
Aquic conditions: redox features in all horizons below a depth of 20 cm (8 inches).

12/2015 revision: updated parent material and landforms based on review of NASIS data; added metric units; added combined thickness of the A and E horizons to RIC in order to differentiate competing series; removed depth to argillic and depth to redox features from RIC since they are not series differentiae; added MLRAs 116 and 118 to extent.

ADDITIONAL DATA: Lab data is available for User Pedon IDs S1953OK145019 and S1953OK145022 from the Kellogg Soil Survey Laboratory, Lincoln, NE. Soil Survey Investigations Report 11, May 1967. Soil Interpretation Record: Series OK0016.

National Cooperative Soil Survey
U.S.A.