LOCATION PRUE OK+KS
Established Series
Rev. JFH:CRC:JABG
09/2020
PRUE SERIES
The Prue series consist of very deep, somewhat poorly drained, slowly permeable upland soils that formed in colluvial sediments that weathered from interbedded sandstone and shale of Pennsylvanian age. These very gently sloping to sloping soils occur on foot slopes of uplands. Slopes range from 1 to 8 percent. Mean annual temperature is 16 degrees C (60 degrees F), and mean annual precipitation in 864 cm (34 in).
TAXONOMIC CLASS: Fine-loamy, siliceous, active, thermic Mollic Paleudalfs
TYPICAL PEDON: Prue loam, on a northeast-facing, convex linear, 4 percent slope in rangeland at an elevation of 282 m (926 ft). (Colors are for moist soil unless otherwise stated.)
A--0 to 31 cm (0 to 12 in); very dark brown (10YR 2/2) loam, dark grayish brown (10YR 4/2) dry; moderate fine granular structure; slightly hard, very friable; moderately acid (pH 5.6); gradual smooth boundary. (Thickness of the A horizon is 20 to 36 cm [8 to 14 in])
BA--31 to 46 cm (12 to 18 in); very dark grayish brown (10YR 3/2) loam, brown (10YR 5/3) dry; few fine faint yellowish brown mottles; weak fine subangular blocky structure parting to moderate medium granular structure; hard, friable; common worm casts; moderately acid (pH 5.6); gradual smooth boundary. (Thickness of the BA horizon is 13 to 20 cm [5 to 8 in])
Bt1--46 to 76 cm (18 to 30 in); yellowish brown (10YR 5/4) sandy clay loam, light yellowish brown (10YR 6/4) dry; common fine distinct strong brown and few fine distinct yellowish red redoximorphic concentrations; weak fine subangular blocky structure; hard, friable; nearly continuous clay films on faces of peds; few worm casts; about 2 percent by volume of sandstone fragments from 2 mm. to 75 mm. in diameter; strongly acid (pH 5.1); gradual smooth boundary.
Bt2--76 to 99 cm (30 to 39 in); yellowish brown (10YR 5/4) clay loam, light yellowish brown (10YR 6/4) dry; with moderate medium distinct strong brown (7.5YR 5/8) and moderate fine distinct yellowish red redoximorphic concentrations; weak medium subangular blocky structure; very hard, firm; nearly continuous clay films on faces of peds; few fine black (10YR 2/1) concretions; slightly acid pH 6.1); gradual smooth boundary. (Combined thickness of the Bt horizons is 18 to 79 cm [7 to 31 in])
2Bt3--99 to 127 cm (39 to 50 in); coarse redoximorphic features of strong brown (7.5YR 5/8), grayish brown (2.5Y 5/2), and yellowish red (5YR 5/6) silty clay loam; weak medium blocky structure; extremely hard, very firm; nearly continuous clay films on faces of peds; few fine black (7.5YR 2.5/1) concretions; slightly acid (pH 6.1); gradual smooth boundary. (0 to 16 inches thick)
2Bt4--127 to 183 cm (50 to 72 in); coarse redoximorphic features of strong brown (7.5YR 5/8), grayish brown (2.5Y 5/2), and very dark gray (10YR 3/1) silty clay; weak coarse blocky structure; extremely hard, very firm; nearly continuous clay films on faces of peds; few fine black (7.5YR 2.5/1) concretions; moderately alkaline (pH 7.9); gradual wavy boundary. (Combined thickness of the 2Bt horizons is 0 to 97 cm [0 to 38 in])
2C--183 to 243 cm (72 to 96 in); light olive gray (5Y 6/2) and pale olive (5Y 6/3) laminated shale; with brownish yellow streaks; calcareous in spots; few calcium carbonate concretions; moderately alkaline (pH 7.9).
TYPE LOCATION: Osage County, Oklahoma; about 4.5 miles south and 3.5 miles east of Wynona; 2,500 feet east and 90 feet south of center of sec. 18, T. 23 N., R. 10 E.
USGS topographic quadrangle: Hominy NE, Oklahoma
Latitude: 36.4695188
Longitude: -96.2649276
Decimal Degrees
Latitude: 36 degrees, 28 minutes, 10.27 seconds N
Longitude: 96 degrees, 15 minutes, 53.74 seconds W
Datum: WGS84
UTM Easting: 745063.64
UTM Northing: 4039505.25
UTM Zone: 14N
RANGE IN CHARACTERISTICS:
Solum thickness: more than 152 cm (60 in)
Depth to abrupt textrual change: 44 to 56 cm (17 to 22 in)
Depth to mollic properties: 33 to 56 cm (13 to 22 in)
Depth to argillic horizon:46 to 183 cm (18 to 72 in)
Depth to lithologic discontinuities: 127 to 243 cm (50 to 96 in)
Depth to secondary carbonates: 127 to 243 cm (50 to 96 in)
Depth to redoximorphic Features: 46 to 76 cm (18 to 30 in)
Particle size control section: 46 to 96 (18 to 38 in)
A horizon:
Hue: 10YR
Value: 2 or 3
Chroma: 1 or 2
Texture: Loam
Reaction: strongly acid to slightly acid (pH 5.1 to 6.1)
BA horizon:
Hue: 10YR
Value: 3 to 5
Chroma: of 2 or 3
Redoximorphic concentrations: shades of brown or red
Texture: loam, sandy clay loam, or clay loam
Reaction: strongly acid to slightly acid (pH 5.1 to 6.1).
Bt horizons:
Hue: 10YR
Value: 3 to 5
Chroma: 3 to 6
Mottles: shades of brown or red Redoximorphic features: when present are coarse and shades of brown or red
Texture: sandy clay loam or clay loam
Reaction:strongly acid to slightly alkaline (pH 5.1 to 7.4)
2Bt horizons when present:
Hue: of 10YR
Value: 6
Chroma: 4
Redoximorphic features: coarse and in shades of brown, red and gray
Texture: silty clay loam, clay loam, or silty clay
Reaction: moderately acid to moderately alkaline (pH 5.6 to 7.9)
Fragments: sandstone or shale from 2 mm to 75 mm in diameter and range from 0 to 10 percent by volume (2Bt3) 0 to 20 percent by volume (2Bt4)
2C horizon when present:
Hue: 5y to 10YR
Value: 6
Chroma: 2 to 6
Texture: interbedded lenses of sandstone or clay
Some pedons do not have a 2Bt or 2C horizon but are sandy clay loam or clay loam to a depth of more than 152 cm (60 in)
COMPETING SERIES: There are the
Bastsil,
Duffau and
Flynn series in the same family.
Bastsil: Hue of 2.5YR to 7.5YR and in MLRAs 85, 80B, 86A, 84B, 84C, and 87A
Duffau: Hue of 5YR to 10YR and in MLRAs 84B, 85, 80B, 80A, and 84A
Flynn: Hue of 2.5YR TO 7.5YR, has a semiactive activity class, and in MLRAs 87A and 113B
GEOGRAPHIC SETTING:
Parent Material: colluvial sediments weathered from interbedded sandstone and shale of Pennsylvanian age
Landscape: Hills
Landform: base slopes of uplands
Slope: 1 to 8
Mean annual soil temperature: 13.9 to 17.2 degrees C (57 to 63 degrees F)
Mean annual precipitation: 813 to 965 mm (32 to 38 in)
Frost-free period: 190 to 230 days
Elevation: 213 to 457 m (700 to 1500 ft)
Thornthwaite P-E Index: 54 to 64
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Darnell, Darsil and Stephenville series.
Darnell: are on very gently sloping to steep ridge crests and upper side slopes of hills on uplands and have sandstone bedrock within 102 cm (40 in)
Darsil: are on convex ridge crests and side slopes of hills and have sandstone bedrock within 102 cm (40 in)
Stephenville: are on uplands and have sandstone bedrock within 102 cm (40 in)
DRAINAGE AND PERMEABILITY: Moderately well drained; medium to high runoff; slow permeability.
USE AND VEGETATION:
Major uses: rangeland and cropland
Native vegetation: tall grass prairie
Used mainly for native range and tame pasture. Small grains are the main cultivated crops. The native vegetation is tall grass prairie.
DISTRIBUTION AND EXTENT:
General area: Northeastern Oklahoma and southeast Kansas
Land Resource Region: H- Central Great Plains Winter Wheat and Range
Major Land Resource Area: 84A, 112, 76, 80A, and 118B
Extent: moderate
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: TEMPLE, TEXAS
SERIES ESTABLISHED: Osage County, Oklahoma; 1975.
REMARKS:
The Prue soils were formerly included in the Bates series.
Diagnostic features and horizons recognized in this soil are:
Ochric epipedon: 0 to 31 cm (0 to 12 in)(A horizon)
Argillic horizon: 46 to 183 cm (18 to 72 in)(Bt horizons)
Lithologic Discontinuities: 127 to 243 cm (50 to 96 in) (2Bt and 2C horizons)
ADDITIONAL DATA: Oklahoma State University Laboratory Sample Number 73-OK-57-26 (1-7)
TAXONOMIC VERSION: Keys to Soil Taxonomy, Twelfth Edition, 2014
National Cooperative Soil Survey
U.S.A.