LOCATION REINACH OK+KSEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, thermic Pachic Haplustolls
TYPICAL PEDON: Reinach silt loam--cultivated. (Colors are for dry soil unless otherwise stated.)
Ap--0 to 9 inches; brown (7.5YR 5/2) silt loam, dark brown (7.5YR 3/2) moist; weak fine and medium granular structure; slightly hard, very friable; many fine roots; neutral; clear smooth boundary. (0 to 12 inches thick)
A1--9 to 14 inches; reddish brown (5YR 5/3) silt loam, dark reddish brown (5YR 3/3) moist; weak fine and medium granular structure; slightly hard, very friable; many fine roots; many fine pores; many wormcasts; neutral; gradual smooth boundary. (5 to 18 inches thick)
A2--14 to 30 inches; reddish brown (2.5YR 5/3) silt loam, dark reddish brown (2.5YR 3/3) moist; weak fine and medium granular structure; slightly hard, very friable; many fine roots; many fine pores; many wormcasts; few dark colored krotovinas; slightly alkaline; gradual smooth boundary. (8 to 24 inches thick)
Bw--30 to 50 inches; red (2.5YR 5/6) silt loam, red (2.5YR 4/6) moist; weak fine and medium granular structure; slightly hard, very friable; many fine roots; many fine pores; many wormcasts, few dark colored krotovinas; few soft masses and threads of calcium carbonate beginning at 35 inches; calcareous; moderately alkaline; gradual smooth boundary. (6 to 40 inches thick)
C--50 to 84 inches; red (2.5YR 5/6) very fine sandy loam, red (2.5YR 4/6) moist; massive; slightly hard, very friable; many fine roots and pores; few wormcasts; few soft masses and films of calcium carbonate; few fine concretions of calcium carbonate; calcareous; moderately alkaline.
TYPE LOCATION: Grady County, Oklahoma; about 1 mile north and 1.6 miles east of Verden; 2,060 feet west and 50 feet north of the southeast corner of sec. 6, T. 7 N., R. 8 W.
RANGE IN CHARACTERISTICS: Some pedons have a buried A horizon below a depth of 40 inches. Depth to secondary lime ranges from 20 to 60 inches.
The A horizon has hue of 2.5YR to 10YR, value of 4 or 5, and chroma of 2 or 3. It is loam, very fine sandy loam, or silt loam and slightly acid to moderately alkaline.
The Bw horizon has hue of 2.5YR to 7.5YR, value of 4 or 5, and chroma of 2 to 6. This horizon is similar to the A horizon in texture. It is neutral to moderately alkaline.
The C horizon has hue of 2.5YR to 7.5YR, value of 4 to 6, and chroma of 3 to 6. It is similar to the A horizon in texture and some pedons are stratified with thin strata of coarser or finer textured material below a depth of 50 inches.
COMPETING SERIES: There are no other soils in the same family. Canadian, Crisfield, Dale, Keokuk, Minco, and Nash series are in similar families. Canadian, Crisfield, Keokuk, Minco, and Nash soils have a mollic epipedon less than 20 inches thick. In addition, Canadian and Crisfield soils contain more than 15 percent fine and coarser sand. Dale soils have more than 18 percent clay in the control section. Nash soils have sandstone or siltstone at a depth of about 40 inches.
GEOGRAPHIC SETTING: These soils are on flood plains. Slopes are nearly level and gradients range from about 0 to l percent. Reinach soils formed in loamy alluvium. They are rarely flooded for very brief periods of time from April through November. Mean Annual Precipitation: 26 to 38 inches. Mean Annual Temperature: 57 to 64 degrees F. Thornthwaite Annual P-E indices: 44 to 64. Frost free days 185 to 220.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Amber, Canadian, Crisfield, Dale, Hawley, McLain, Port, and Yahola series. Amber soils are on slightly lower areas and lack a mollic epipedon. Canadian, Crisfield, and Hawley soils are on the same landscape, but closer to the streams. Dale soils are on the same landscapes but further from the stream. Hawley soils have a coarse-loamy control section. McLain soils are also on high flood plains, but on lower landscapes farther from the stream and have an argillic horizon that has more than 35 percent clay in the control section. Port soils are on lower flood plains and have more than 18 percent clay in the control section. Yahola soils are on lower flood plains, lack a mollic epipedon, and have a coarse-loamy control section.
DRAINAGE AND PERMEABILITY: Well drained; runoff is negligible; permeability is moderate. These soils are subject to rare flooding.
USE AND VEGETATION: Used mainly for growing alfalfa, cotton, small grains, and sorghums. Native vegetation is tall and mid prairie grasses. Some areas have elm, hackberry, oak, walnut, and pecan trees.
DISTRIBUTION AND EXTENT: Mainly along major streams in the Central Rolling Red Prairies (MLRA-80A) of central Oklahoma, and south-central Kansas. The series is moderately extensive.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Muskogee County, Oklahoma; 1913.
REMARKS: Soil Interpretation Record: Series OK0089.
Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface of the soil to a depth of 30 inches (A horizons and sometimes the Bw horizon).
Cambic horizon - the zone from 30 inches to a depth of 50 inches (Bw Horizon).
Moisture regime- Udic-Ustic.