LOCATION POND CREEK OK+KSEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, thermic Pachic Argiustolls
TYPICAL PEDON: Pond Creek silt loam--cultivated. (Colors are for dry soil unless otherwise stated.)
Ap--0 to 6 inches; dark brown (7.5YR 4/2) silt loam, dark brown (7.5YR 3/2) moist; weak fine granular structure; slightly hard, friable; slightly acid; abrupt smooth boundary. (0 to 10 inches thick)
A--6 to 12 inches; dark brown (7.5YR 4/2) silt loam, dark brown (7.5YR 3/2) moist; moderate medium granular structure; slightly hard, friable; neutral; gradual smooth boundary. (4 to 20 inches thick)
BA--12 to 22 inches; reddish brown (5YR 4/3) silty clay loam, dark reddish brown (5YR 3/3) moist; weak medium subangular blocky structure parting to moderate medium granular; hard, friable; neutral; gradual smooth boundary. (5 to 15 inches thick)
Bt1--22 to 30 inches; reddish brown (5YR 4/3) silty clay loam, dark reddish brown (5YR 3/3) moist; moderate fine subangular blocky structure; hard, firm; many distinct continuous clay films on faces of peds; neutral; gradual smooth boundary. (5 to 15 inches thick)
Bt2--30 to 46 inches; reddish brown (5YR 4/3) silty clay loam, dark reddish brown (5YR 3/3) moist; strong medium subangular blocky structure; hard, firm; many distinct continuous clay films on faces of peds; neutral; gradual smooth boundary. (10 to 20 inches thick)
BC--46 to 60 inches; reddish brown (5YR 4/4) silty clay loam, dark reddish brown (5YR 3/4) moist; weak medium subangular blocky structure; hard, firm; neutral; gradual smooth boundary. (10 to 20 inches thick)
C--60 to 68 inches; reddish brown (5YR 4/4) silty clay loam, dark reddish brown (5YR 3/4) moist; massive; hard, firm; slightly alkaline; few fine calcium carbonate concretions.
TYPE LOCATION: Garfield County, Oklahoma; about 1/2 mile north of Carrier; 300 feet south of the northeast corner of SE1/4 sec. 11, T. 23 N., R. 8 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 40 to more than 60 inches. Depth to soft powdery secondary calcium carbonate ranges from 40 to more than 60 inches.
The A horizon has hue of 5YR to 10YR, value of 4 or 5 dry and 2 or 3 moist, and chroma of 2 or 3. It is typically silt loam but includes loam and fine sandy loam. Reaction ranges from moderately acid to slightly alkaline.
The BA horizon is similar in color to the A horizon. It is loam, silt loam, clay loam, or silty clay loam. Clay content is 20 to 32 percent. This horizon is slightly acid to moderately alkaline.
The Bt horizon has hue of 5YR to 10YR, value of 4 or 5 dry and 3 or 4 moist, and chroma of 2 to 4. It is loam, silt loam, clay loam, or silty clay loam; clay content is 24 to 35 percent in the upper part and as much as 40 percent in the lower part. This horizon ranges from slightly acid to moderately alkaline.
The BC horizon has hue of 2.5YR to 10YR, value of 4 or 6, and chroma of 3 to 6. It is loam, silt loam, clay loam, or silty clay loam; clay content is 20 to 40 percent. Reaction ranges from neutral to moderately alkaline.
The C horizon has hue of 2.5YR to 7.5YR, value of 4 or 5, and chroma of 3 to 8. It is loam, silt loam, clay loam, or silty clay loam and is neutral to moderately alkaline in the upper part and slightly to moderately alkaline in the lower part.
COMPETING SERIES: These are the Braman (OK), Corbin (KS), Irene (OK), Lawrie (OK), St. Paul (OK) and Westview (OK) series in the same family and the Bethany (OK), Brewer (OK), Chickasha (OK), Grant (OK), Lovedale (OK), Norge (OK), Teller (OK), and Vanoss (OK) series of similar families. Braman soils formed in Pleistocene deposits. Corbin soils have a dense clayey lower argillic horizon with chroma of 2 or 3 and hue of 10YR. Irene, St. Paul and Westview soils have soft powdery secondary calcium carbonate within 45 inches of the surface and PE indices of 44 or less. Bethany, and Brewer soils have more than 35 percent clay in the upper 20 inches of the argillic horizon. Chickasha, Grant, Lovedale, Norge, Teller, and Vanoss soils have a mollic epipedon less than 20 inches thick.
GEOGRAPHIC SETTING: Pond Creek soils are on uplands or high stream terraces. The soils formed in reddish or brownish alkaline and usually calcareous loamy material, high in silt, or silt and very fine sand which was derived from loess, alluvium, residuum from red beds, or a combination of these. Slopes are mainly between 0 and 6 percent. The climate is subhumid. Mean annual precipitation is 26 to 38 inches; Thornthwaite annual P-E indices are 44 to 64 and the mean annual air temperature is 57 to 64 degrees F. Frost free days range from 185 to 210.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bethany (OK), Grant (OK), Kirkland (OK), Milan (KS), Nash (OK), Tabler (OK), and Wetbeth (OK) series. Bethany, Kirkland and Tabler soils are on higher landscapes and have a fine particle-size control section. Grant, Milan, and Nash soils have mollic epipedons less than 20 inches thick and are on higher landscapes of uplands. Wetbeth soils have redoximorphic features in the argillic horizon and have a fine textured control section.
DRAINAGE AND PERMEABILITY: Well drained; negligible to low runoff; moderately slow permeability.
USE AND VEGETATION: Largely cultivated to wheat and other small grains; lesser amounts are in sorghums, cotton, and peanuts. Native vegetation is tall and midgrasses.
DISTRIBUTION AND EXTENT: Central Rolling Red Prairies of Oklahoma and south-central Kansas. The series is extensive.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Grant County, Oklahoma; 1931.
REMARKS:
Soil Interpretation Record: Series OK0049
Diagnostic horizons and features recognized in this soil are:
Mollic epipedon- The zone from the surface of the soil to a depth of 46 inches (A, BA, and Bt horizons).
Argillic horizon- The zone from 22 inches to a depth of 46 inches (Bt horizon).
Pachic- Mollic epipedon more than 20 inches thick.
Moisture regime- Udic-Ustic.