LOCATION DAYCREEK           OK

DAYCREEK SERIES

TAXONOMIC CLASS: Mixed, thermic Aquic Ustipsamments

TYPICAL PEDON: Daycreek loamy fine sand - in native grass. (Colors are for dry soil unless otherwise stated.)

A--0 to 8 inches; brown (7.5YR 5/2) loamy fine sand, brown (7.5YR 4/2) moist; common fine faint brown (7.5YR 5/4) redoximorphic concentration masses; weak fine granular structure; soft, very friable; many fine and medium roots; violently effervescent; moderately alkaline; clear wavy boundary. (6 to 12 inches thick)

AC--8 to 23 inches; light brown (7.5YR 6/4) fine sand, brown (7.5YR 5/4) moist; few fine distinct red (2.5YR 4/6) redoximorphic concentration masses; weak coarse subangular blocky structure; soft, very friable; common fine roots; violently effervescent; moderately alkaline; gradual smooth boundary. (10 to 25 inches thick)

C1--23 to 41 inches; light brown (7.5YR 6/4) fine sand, brown (7.5YR 5/4) moist; few medium prominent strong brown (7.5YR 5/8) redoximorphic concentration masses and few medium distinct light brownish gray (10YR 6/2) redoximorphic depletion masses; root channels are lined with grayish brown (10YR 5/2) redoximorphic depletions; single grain; loose, loose; few fine roots; few black stains; violently effervescent; moderately alkaline; gradual smooth boundary. (10 to 40 inches thick)

C2--41 to 80 inches; brown (7.5YR 5/4) fine sand, brown (7.5YR 4/4) moist; single grained; loose, loose; moderately alkaline. This horizon is stratified with common thin strata of loamy fine sand and sand.

TYPE LOCATION: Woods County, Oklahoma; approximately 17 miles east and 12 miles south of Waynoka; 1850 feet north and 1500 feet east of the southwest corner of sec. 2, T. 22 N., R. 13 W.

RANGE IN CHARACTERISTICS: Daycreek soils have free carbonates within depths of 40 inches.

The A horizon has hue of 7.5YR or 10YR, value of 3 to 5 and 2 to 4 moist, and chroma of 2 or 3. Horizons having value of less than 5.5 dry or 3.5 moist are less than 10 inches thick. Texture is loamy fine sand, loamy sand, fine sandy loam, or fine sand. Reaction is neutral to moderately alkaline.

The AC and C horizon has hue of 7.5YR or 10YR, value 5 to 8 and 4 to 6 moist, and chroma of 3 or 4. Redoximorphic concentration masses are common or many, medium or coarse, and distinct or prominent with higher chromas and redder hues than the matrix. Redoximorphic depletion masses and pore linings range from none to many distinct. This horizon is loamy fine sand, loamy sand, fine sand, or sand. Reaction ranges from slightly alkaline to moderately alkaline.

COMPETING SERIES: The Daycreek series is the only series in this family. Soils in similar families include Derby, Eda, Goodnight, Jester and Likes series. Derby and Eda soils have argillic horizons. Goodnight and Jester soils do not have a water table within 60 inches of the soil surface. Likes soils have visible calcium carbonate to the soil surface and occur in drier climates.

GEOGRAPHIC SETTING: Daycreek soils are on nearly level valley floors, flats, or depressions, surrounded by sandhills. They formed in eolian sands. Slope gradient ranges from 0 to 2 percent. The mean annual temperature ranges from 57 to 62 degrees F. The mean annual precipitation ranges from 27 to 32 inches. Thornthwaite Annual P-E Index ranges from 44 to 50. Frost Free Days: 190 to 220. Elevation: 1000 to 1500 feet.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aline, Goltry, and Tivoli soils. Aline, Goltry, and Tivoli soils are on higher positions which have undulating to dunelike topography. Aline and Goltry soils have argillic horizons. Tivoli soils do not have redoximorphic features within depths of 40 inches.

DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Runoff is very low. Permeability is rapid. Water table fluctuates from depths of 24 inches during wet seasons to 60 inches during dry periods.

USE AND VEGETATION: Used for native rangeland. Native vegetation is tall grasses dominated by sand bluestem, switchgrass, indiangrass, and eastern gramagrass.

DISTRIBUTION AND EXTENT: Central Rolling Red Prairies (MLRA-80A) of Oklahoma and Kansas. The series is moderately extensive.

MLRA OFFICE RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Woods County, Oklahoma, 1995.

REMARKS: Soil Interpretation Record: Series OK0430

Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon- the zone from the soil surface to a depth of 8 inches. (the A horizon)

Aquic- aquic conditions are within 100cm of the mineral soil surface with distinct or prominent redoximorphic concentrations.

These soils were formerly included in the Dillwyn series in earlier surveys in the Central Rolling Red Prairies (MLRA 80A).