LOCATION RADLEY             KS+MO OK

RADLEY SERIES

TAXONOMIC CLASS: Fine-silty, mixed, active, thermic Fluventic Hapludolls

TYPICAL PEDON: Radley silt loam - cultivated. (Colors are for moist soil unless otherwise stated.)

A--0 to 30 centimeters (0 to 12 inches); very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; weak medium granular structure; hard, friable; moderately acid; clear smooth boundary. (25 to 61 centimeters (10 to 24 inches) thick)

Bw--30 to 58 centimeters (12 to 23 inches); dark grayish brown (10YR 4/2) silt loam, light brownish gray (10YR 6/2) dry; weak medium granular structure; hard, friable; moderately acid; gradual smooth boundary. (0 to 51 centimeters (0 to 20 inches) thick)

C--58 to 107 centimeters (23 to 42 inches); brown (10YR 4/3) silt loam with less clay than horizon above, pale brown (10YR 6/3) dry; massive; hard, friable; few fine strata of slightly lighter colored material containing more fine and very fine sand; moderately acid; gradual smooth boundary. (25 to 76 centimeters (10 to 30 inches) thick)

Ab--107 to 203 centimeters (42 to 80 inches); very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; massive; hard, friable; common fine strata as in horizon above; moderately acid. (25 to several meters (10 inches to several feet) thick)

TYPE LOCATION: Crawford County, Kansas; about .8 kilometers (.5 mile) north and 1.6 kilometers (1 mile) west of Monmouth; 244 meters (800 feet) west and 61 meters (200 feet) south of the northeast corner of sec. 11, T. 31 S., R. 22 E.

RANGE IN CHARACTERISTICS:
Thickness of solum: 25 to 76 centimeters (10 to 30 inches)
Thickness of the mollic epipedon: 25 to 61 centimeters (10 to 24 inches)
Reaction; moderately acid to neutral

A horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 2 or 3, 3 to 5 dry
Chroma: 1 to 3
Texture: silt loam or light silty clay loam

Bw horizon:
Hue: 10YR or 7.5YR
Value: 3 to 5, 5 to 7 dry
Chroma: 2 to 4
Mottled horizon: colors having chroma more than 2 but not within depths of 51 centimeters (20 inches) in some pedons
Texture: silt loam or light silty clay loam

C and Ab horizons:
Colors: like the B
Horizons contain thin strata with colors of higher and lower value and varying textures.

COMPETING SERIES: This is the Bardwell series. Bardwell series have 0 to 35 percent rock fragments in the BC and C horizons.

GEOGRAPHIC SETTING:
Landform: nearly level flood plains
Slope: dominantly less than 1 percent but range from 0 to 3 percent
Parent material: stratified silty alluvium
Climate: moist subhumid to humid
Thornthwaite Annual P-E Index: 64 to 82
Mean annual temperature: 14 to 18 degrees C. (57 to 64 degrees F.)
Mean annual precipitation: 97 to 119 centimeters (38 to 47 inches)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dennis, Parsons, Cherokee, Lula, McCune, Osage, Verdigris and Zaar.
Verdigris have a mollic epipedon greater than 50 cm thick. The more Osage soils are more clayey. The lighter colored McCune soils are in areas further from the stream channel. Dennis, Parsons, Cherokee, Lula, and Zaar soils are on uplands. With the exception of the more clayey Zaar soils, these have argillic horizons.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: moderately well drained
Runoff: negligible to very low
Saturated Hydraulic Conductivity: moderately high
Flooding: occasionally or frequently flood

USE AND VEGETATION: the area is cropped or used as woodland and pasture.
Principal crops are alfalfa, corn, and sorghum.
Native vegetation is lowland hardwood forest.

DISTRIBUTION AND EXTENT: Southeastern Kansas, southwestern Missouri, and eastern Oklahoma mostly in the Cherokee Prairies (MLRA 112). The series is moderately extensive.

MLRA OFFICE RESPONSIBLE: Salina, Kansas

SERIES ESTABLISHED: Crawford County, Kansas, 1969.

REMARKS: Diagnostic horizons and features recognized in this pedon:
Mollic epipedon: 0 to 30 centimeters (0 to 12 inches) (A horizon)
Cambic horizon: 30 to 58 centimeters (12 to 23 inches (Bw horizon)
Organic carbon content: decreases irregularly with increasing depth

Modified format by LRM in 3/2006 to include metric conversion and change permeability to saturated hydraulic conductivity.