LOCATION TALOKA             OK+AR KS

TALOKA SERIES

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

TYPICAL PEDON: Taloka silt loam--pasture. (Colors are for moist soil unless otherwise stated.)

A--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. (6 to 14 inches thick)

E1--8 to 20 inches; dark grayish brown (10YR 4/2) silt loam, light brownish gray (10YR 6/2) dry; few fine faint yellowish brown (10YR 5/6) redoximorphicimorphic iron concentration masses; weak fine granular structure; slightly hard, friable; strongly acid; gradual smooth boundary. (5 to 30 inches thick)

E2--20 to 28 inches; grayish brown (10YR 5/2) silt loam, light gray (10YR 7/2) dry; few fine faint yellowish brown (10YR 5/6) redoximorphicimorphic iron concentration masses; weak fine granular structure; slightly hard, friable; many fine black concretions; common medium bodies of dark yellowish brown (10YR 4/4) clay in lower 1 inch; strongly acid; abrupt smooth boundary. (5 to 30 inches thick)

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

Bt2--34 to 44 inches; brown (10YR 4/3) silty clay loam, brown (10YR 5/3) dry; common medium faint yellowish brown (10YR 5/6) and strong brown (7.5YR 4/6) and few fine prominent red (2.5YR 5/6) redoximorphicimorphic iron concentration masses; 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; many fine black concretions; neutral; gradual smooth boundary. (6 to 20 inches thick)

Bt3--44 to 60 inches; brown (10YR 4/3) silty clay loam, brown (10YR 5/3) dry; few medium distinct yellowish brown (10YR 5/6) and strong brown (7.5YR 5/6) redoximorphicimorphic iron concentration masses; 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; few fine black concretions; few fine crystals of gypsum; neutral; gradual smooth boundary. (10 to 30 inches thick)

BC--60 to 78 inches; silty clay loam with coarsely mixed light gray (10YR 7/1), yellowish brown (10YR 5/6), and strong brown (7.5YR 5/6) redoximorphicimorphic iron depletion masses and concentration masses; weak medium blocky structure; very hard, firm; few fine black concretions; many fine crystals of gypsum; neutral.

TYPE LOCATION: Wagoner County, Oklahoma; about 4 miles southeast of Wagoner; NE1/4 sec. 2, T. 16 N., R. 18 E.; 275 feet south-southeast where Oklahoma State Highway 2 crosses north section line.

RANGE IN CHARACTERISTICS:
Depth to argillic horizon: 11 to 44 inches
Depth to redoximorphic concentrations: 6 to 14 inches
Particle-size control section (weighted average): 28 to 48 inches
Clay content: 35 to 50 percent

A horizon:
Hue: 10YR
Value: 3 moist; 4 or 5 dry
Chroma: 1 or 2
Texture: silt loam
Clay content: 15 to 25 percent
Reaction: 5.6 to 7.3

E horizon:
Hue: 10YR
Value: 4 or 5 moist; 6 or 7 dry
Chroma: 2
redoximorphic concentrations: few yellowish brown
Texture: silt loam
Clay content: 15 to 25 percent
Reaction: 5.1 to 6.0

Bt horizon:
Hue: 10YR or 2.5Y
Value: 3 to 5 moist; 4 to 6 dry
Chroma: 1 to 4
redoximorphic concentrations: red, strong brown, yellowish brown
redoximorphic depletions: gray, light gray
Texture: silty clay loam clay loam, silty clay, or clay
Clay content: 35 to 60 percent
Reaction: 5.1 to 7.3

BC horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 3 to 5 moist; 4 to 6 dry
Chroma: 1 to 4
redoximorphic concentrations: strong brown, yellowish brown
redoximorphic depletions: gray, light gray
Texture: clay loam, silty clay loam, silty clay, or clay
Clay content: 35 to 60 percent
Reaction: 6.1 to 7.8

COMPETING SERIES: This is the Parsons series.
Parsons soils have soils have a combined A horizon and E horizon less than 16 inches thick.

GEOGRAPHIC SETTING:
Parent material: old alluvial sediments with small amounts of loess and in part from shale
Landform: nearly level to very gently sloping uplands or terraces
Slopes: 0 to 3 percent
Elevation: 500 to 1200 feet
Mean annual temperature: 57 to 62 degrees F
Mean annual precipitation: 37 to 45 inches
Frost-free period: 190 to 220 days.
Thornthwaite annual P-E index is 64 to 80

GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Parsons soils.
Parsons soils are on the same landscape.

DRAINAGE AND PERMEABILITY:
Drainage: Somewhat poorly drained
Runoff: moderate
Permeability: very slow
Taloka soils have a perched water table at a depth of 1 to 2 feet from March to June.

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

DISTRIBUTION AND EXTENT: Northeastern Oklahoma, northwestern Arkansas and possibly in southeastern Kansas and southwestern Missouri. Moderately extensive.

MLRA OFFICE RESPONSIBLE: Salina, Kansas

SERIES ESTABLISHED: Okfuskee County, Oklahoma; 1940.

REMARKS: Soil Intrepretation Record: Series OK0016 Diagnostic horizons and features recognized in this series: Ochric epipedon - the zone from the surface of the soil to a depth of 28 inches (A and E horizons); Argillic horizon - the zone from approximately 28 to 60 inches (Bt horizons); Aquic moisure regime

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.
Format modified to semi-tab and activity class added 4/12/01. JCR

ADDITIONAL DATA: Soil Survey Investigations Report 11, May 1967.