LOCATION BUCYRUS KSEstablished Series
TAXONOMIC CLASS: Fine, smectitic, thermic Vertic Paleudolls
TYPICAL PEDON: Bucyrus silt loam, 1 to 4 percent slopes in pasture. (Colors are for moist soil unless otherwise stated)
Ap--0 to 20 centimeters (0 to 8 inches); very dark brown (10YR 2/2), silt loam, dark grayish brown (10YR 4/2) dry; weak fine subangular blocky structure parting to weak fine granular; many fine roots; slightly hard, friable, slightly sticky, slightly plastic; neutral; clear smooth boundary.
A1--20 to 41 centimeters (8 to 16 inches); very dark brown (10YR 2/2), silty clay loam, dark grayish brown (10YR 4/2) dry; moderate fine subangular blocky structure; many fine roots; slightly hard, friable, sticky, plastic; slightly acid; clear smooth boundary. (Combined thickness of the A horizons is 30 to 66 centimeters (12 to 26 inches.)
BA--41 to 56 centimeters (16 to 22 inches); very dark grayish brown (10YR 3/2) silty clay loam, grayish brown (10YR 5/2) dry; moderate fine and medium subangular blocky structure; many fine roots; slightly hard, firm, sticky and plastic; slightly acid; clear smooth boundary. (13 to 28 centimeters, (5 to 11 inches thick.)
Bt1--56 to 81 centimeters (22 to 32 inches); brown (7.5YR 4/2) silty clay loam, pinkish gray (7.5YR 6/2) dry; moderate medium subangular blocky structure; common fine roots; hard, firm, sticky and plastic; common fine distinct reddish brown (5YR 4/3) iron accumulations; few fine dark manganese concretions; common distinct clay films on faces of peds; slightly acid; clear smooth boundary.
2Bt2--81 to 132 centimeters (32 to 52 inches); reddish brown (5YR 4/3) silty clay, light reddish brown (5YR 6/3) dry; moderate medium subangular blocky structure; common fine roots; hard, firm, sticky and plastic; common distinct brown (7.5YR 4/2) clay films on faces of peds; few fine and medium manganese concretions; slightly acid; clear smooth boundary.
2Bt3--132 to 180 centimeters (52 to 71 inches); yellowish red (5YR 4/6) silty clay, reddish yellow (5YR 6/6) dry; moderate medium subangular blocky structure; few fine and medium roots; hard, firm, sticky and plastic; common distinct clay films on faces of peds; slightly acid; abrupt smooth boundary. (Combined thickness of the Bt horizons is 30 to 50 inches)
R--180 centimeters (71 inches); limestone bedrock.
TYPE LOCATION: Miami County, Kansas; about 9 miles west and 4 miles north of Hillsdale; 182 meters (600 feet) south and 91 meters (300 feet) west of the northeast corner, Sec. 30, T. 15 S., R. 22 E.
RANGE IN CHARACTERISTICS:
Depth to limestone: 150 to 201 centimeters (60 to 80 inches)
Thickness of the loess mantle: 50 to 76 centimeters (20 to 30 inches)
Mollic epipedon: 30 to 76 centimeters (12 to 30 inches)
Depth to redoximorphic concentrations: 43 to 94 centimeters (17 to 37 inches)
Particle-size control section (weighted average):
Clay content: 35 to 45
A horizon:
Hue: 10YR
Value: 2 or 3 moist, 4 or 5 dry
Chroma: 2 or 3
Texture: silty clay loam or silt loam
Reaction: moderately acid or slightly acid
BA horizon:
Hue: 10YR or 7.5YR
Value: 3 or 4
Chroma: 2 or 3
Texture: silty clay loam
Reaction: strongly acid to slightly acid.
Bt horizon:
Hue: 10YR or 7.5YR
Value: 3 to 5 moist, 5 to 7 dry
Chroma: 2 to 4
Texture: silty clay loam or silty clay
Clay content: 35 to 45 percent
Reaction: strongly acid or moderately acid
2Bt horizon:
Hue: 5YR or 7.5YR
Value: 3 to 5 moist, 5 to 7 dry
Chroma: 2 to 6
Texture: silty clay loam or silty clay
Clay content: 40 to 65 percent
Reaction: strongly acid to neutral
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING:
Parent material: formed in Peorian loess over Pennsylvanian age limestone residuum.
Landform: are commonly located on shoulder and backslope positions on hillsides and less commonly on summits on uplands.
Slopes: 1 to 8 percent.
Mean annual temperature ranges from 13 to 15 degrees C (55 to 59 degrees F)
Mean annual precipitation ranges from 89 to 104 centimeters (35 to 41 inches)
GEOGRAPHICALLY ASSOCIATED SOILS: These are
Clareson,
Eram,
Kenoma,
Lula,
Summit,
Wagstaff(T), and
Woodson soils.
The clayey-skeletal Clareson soils are above and below Bucyrus soils. Eram soils are moderately deep to shale and occur below Bucyrus soils. Kenoma soils formed in old alluvium material and are above Bucyrus soils on shoulders and summits.
Lula soils are deep to limestone and are on similar landforms.
Summit soils are deep and very deep to shale and occur on lower backslope and footslope positions.
Wagstaff soils are moderately deep to limestone and are on shoulder and nose positions.
Woodson soils have an abrupt textural change between the A and B horizons and are on broad interfluves, summits, and terraces.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: Moderately well drained
Runoff: slow to medium.
Saturated hydraulic conductivity: moderately low
Seasonal saturation: 76 to 122 centimeters (2.5 to 4 feet) during March to June in most years.
USE AND VEGETATION: Corn, soybeans, grain sorghum, and wheat are the principal crops
Some areas are used for hay and pasture.
Native vegetation is tall grass prairie and deciduous trees.
DISTRIBUTION AND EXTENT: East Central Kansas. The series is of moderate extent.
MLRA OFFICE RESPONSIBLE: Salina, Kansas
SERIES ESTABLISHED: Miami County, Kansas, 1994.
REMARKS: Formerly these soils were mapped as Newtonia series in northeast and east central Kansas.
Diagnostic horizons and features recognized in this pedon are: mollic epipedon - the zone from the surface to 22 inches; argillic horizon - the zone from 22 to 71 inches; lithic contact - at 71 inches; udic moisture regimes.