LOCATION SLAUGHTERVILLE OKEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, thermic Udic Haplustolls
TYPICAL PEDON: Slaughterville fine sandy loam, on a 3 percent convex slope in improved bermuda pasture. (Colors are for dry soils unless otherwise stated.)
Ap--0 to 9 inches; brown (10YR 5/3) fine sandy loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; slightly hard, very friable; many very fine and few medium roots; slightly acid; clear smooth boundary. (7 to 11 inches thick)
A--9 to 18 inches; brown (10YR 4/3) fine sandy loam, dark brown (10YR 3/3) moist; moderate medium granular structure; slightly hard, very friable; many very fine roots; slightly acid; gradual smooth boundary. (3 to 10 inches thick)
Bw--18 to 30 inches; brown (7.5YR 5/4) fine sandy loam, brown (7.5YR 4/4) moist; weak fine subangular blocky structure; slightly hard, very friable; many very fine roots; neutral; gradual smooth boundary. (10 to 56 inches thick)
C1--30 to 58 inches; yellowish red (5YR 5/6) fine sandy loam, yellowish red (5YR 4/6) moist; massive; soft, very friable; common very fine roots; slightly alkaline; gradual smooth boundary. (8 to 48 inches thick)
C2--58 to 76 inches; yellowish red (5YR 5/6) loamy fine sand, yellowish red (5YR 5/6) moist; massive; soft, very friable; few very fine roots; moderately alkaline.
TYPE LOCATION: Cleveland County, Oklahoma; about 6 miles west and 6 miles north of Norman; about 2,040 feet east and 580 feet north from the southwest corner of sec. 29, T. 10 N., R. 3 W.
RANGE IN CHARACTERISTICS: Solum thickness is 20 to more than 50 inches.
The Ap or A horizon has hue of 7.5YR or 10YR, value of 4 or 5, and chroma of 2 or 3. Combined thickness of the A horizon is less than 20 inches. Reaction ranges from moderately acid to neutral.
The Bw horizon has hue of 5YR or 7.5YR, value of 4 or 5, and chroma of 2 to 6. Texture is fine sandy loam and the clay content ranges from 10 to 18 percent. Reaction ranges from slightly acid to moderately alkaline.
The C horizon has hue of 5YR or 7.5YR, value of 5 to 7, and chroma of 4 to 6. Texture is fine sandy loam, but some pedons are loamy fine sand or fine sand below 45 inches. Stratification is evident in some pedons below 33 inches. Reaction ranges from neutral to moderately alkaline. A few pedons have a Btb horizon of sandy clay loam below 50 inches.
COMPETING SERIES: These are the Canadian and Crisfield series in the same family. Soils in similar families are the Attica, Cyril, Devol, Dill, Gerlane, Minco, Nash, Noble, Paluxy, Pocasset, Reinach, and Shrewder series. Attica and Devol soils have argillic horizons. Canadian soils typically have hue or 10YR in the Bw and C horizons and occur on flood plains. Crisfield soils occur on flood plains and typically are more acid in the control section. Cyril soils have a mollic epipedon more than 20 inches thick and are calcareous throughout the B and C horizons. Dill, Noble, Paluxy, and Shrewder soils lack a mollic epipedon. In addition, Dill soils have bedrock within 20 to 40 inches and Paluxy soils have siliceous mineralogy. Gerlane soils are on flood plains and have secondary carbonates within 30 inches of the surface. Minco, Nash, and Reinach soils have a coarse-silty control section. In addition, Nash soils have bedrock within 20 to 40 inches. Pocasset soils have an irregular decrease in organic matter content.
GEOGRAPHIC SETTING: Slaughterville soils are on very gently sloping to steep mantled upland ridge crests and side slopes paralleling major streams in the Central Rolling Red Prairies. Slopes are mainly 1 to 8 percent, but range up to 45 percent. These soils formed in material weathered from loamy and sandy eolian sediments of Pleistocene Age.
Mean Annual Precipitation: 26 to 40 inches.
Mean Annual Temperature: 58 to 64 degrees F.
Thornthwaite Annual P-E indices: 44 to 64.
Frost free days: 200 to 230.
Elevation: 800 to 1200 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Canadian and Minco soils and the Derby, Dougherty, Konawa, Norge, Teller, and Vanoss soils. Canadian soils are on nearly level to very gently sloping flood plains that are subject to rare flooding. Derby soils are similar landscapes and have a sandy control section with lamellae. Dougherty and Konawa soils occur on higher landscapes that are farther from the stream and they have lighter colored A horizons and have a fine-loamy control section. In addition, Dougherty soils have A horizons more than 20 inches thick. Minco soils usually occur on slightly higher and flatter adjacent areas. Norge, Teller, and Vanoss soils are on similar landscapes that are farther from the stream and they have argillic horizons.
DRAINAGE AND PERMEABILITY: Well drained; runoff is very low on 1 to 5 percent slopes, low on 5 to 20 percent slopes, and medium on slopes greater than 20 percent; moderately rapid permeability.
USE AND VEGETATION: Used mainly for tame pasture or rangeland. Some areas are cultivated to wheat, cotton, grain sorghum, or peanuts. Tame pastures are mostly improved bermudagrass and weeping lovegrass. Native vegetation is mid and tall grasses with a few post oak trees.
DISTRIBUTION AND EXTENT: Central Rolling Red Prairies of Oklahoma. The soil is of small extent.
MLRA OFFICE RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Payne County, Oklahoma; 1983.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface of the soil to a depth of 18 inches (A horizons).
Cambic horizon - the zone from 18 inches to a depth of 30 inches (Bw horizon).