LOCATION JULES IL+IN OHEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, calcareous, mesic Typic Udifluvents
TYPICAL PEDON: Jules silt loam - with a slope of less than one percent in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; dark grayish brown (10YR 4/2) silt loam with some yellowish brown (10YR 5/4) peds, light brownish gray (10YR 6/2) dry; moderate medium granular structure; friable; few very fine roots; common faint very dark grayish brown (10YR 3/2) organic films on faces of peds; slight effervescence; mildly alkaline; clear smooth boundary. (0 to 10 inches thick)
C1--8 to 18 inches; stratified dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), and yellowish brown (10YR 5/4) silt loam with very thin strata of loam; thin bedding planes along strata; massive; friable; few very fine roots; slight effervescence; mildly alkaline; clear smooth boundary. (5 to 30 inches thick)
C2--18 to 32 inches; stratified dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), and yellowish brown (10YR 5/4) silt loam with thin strata of very fine sandy loam and loam; thin bedding planes along strata; massive; friable; few very fine roots; slight effervescence; mildly alkaline; clear smooth boundary. (0 to 20 inches thick)
C3--32 to 46 inches; stratified dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), and yellowish brown (10YR 5/4) silt loam with this strata of loamy sand and loam; thin bedding planes along strata; massive; friable; slight effervescence mildly alkaline; clear smooth boundary. (0 to 20 inches thick)
C4--46 to 60 inches; stratified brown (10YR 4/3), dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), and yellowish brown (10YR 5/4) silt loam with thin strata of loamy sand and loam; thin bedding planes along strata; massive; friable; common fine soft accumulations (iron and manganese oxides); slight effervescence; mildly alkaline.
TYPE LOCATION: Peoria County, Illinois; about 12 miles northwest of Peoria; 2,200 ft. east and 75 south of the northwest corner of section 36, T. 10 N., R. 6 E.
RANGE IN CHARACTERISTICS: The solum is 10 inches or less in thickness, and is the same thickness as the Ap or A horizon. Depth to free carbonates is less than 10 inches. These soils contain free carbonates throughout the particle-size control section.
The Ap or A horizon has value of 4 or 5, and chroma of 2 through 4. It is predominantly silt loam, but loam is included in the range.
The C horizon has value of 3 through 5, and chroma of 2 through 4. Some pedons are mottled below a depth of 10 inches, but no layer within a depth of 40 inches is saturated at any time during the year except during periods of flooding. The C horizon dominantly is silt loam or silt, but thin strata of loam, very fine sandy loam, fine sandy loam, loamy sand or sand, or the fine and very fine analogs of the latter two textures are in some pedons. The total sand content commonly is 5 to 20 percent. Some pedons contain dark colored buried soils that contain more clay below a depth of 40 inches.
COMPETING SERIES: There are no competing series. Some similar soils are are Arenzville, Bold, Chaseburg, Dorchester, Haymond, Haynie, and McPaul series. Arenzville, Chaseburg, and Haymond soils are noncalcareous. Bold soils are not stratified. Dorchester soils contain more clay in the control section. Haynie and McPaul soils have darker surface horizons.
GEOGRAPHIC SETTING: Jules soils are on flood plains and on alluvial fans where tributary streams enter river flood plains. Slope gradients are less than 2 percent. Jules soils formed in relatively unaltered stratified, calcareous alluvium washed from soils formed in loess on nearby uplands. Mean annual temperature ranges from 50 to 56 degrees F, and mean annual precipitation ranges from 33 to 44 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Arenzville, Dorchester, Haymond, Landes, Lawson, Sarpy, and Wakeland soils. Arenzville, Dorchester and Haymond soils are on similar parts of the flood plains nearby. Landes and Sarpy soils contain more sand in the control section and are on natural levees or low rises on the flood plains. Lawson soils have a mollic epipedon and contain more clay. They are on lower parts of the flood plain nearby. Wakeland soils are Aeric Fluvaquents and are on lower parts of the flood plain nearby.
DRAINAGE AND PERMEABILITY: Well drained and moderately well drained. Surface runoff is slow. Permeability is moderate.
USE AND VEGETATION: Most areas are cropped. Corn, soybeans, and small grain are the principal crops.
DISTRIBUTION AND EXTENT: Along major streams in southern and western Illinois, and in Indiana and Ohio. Extent is moderate.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Cass County, Illinois, 1939.
REMARKS: Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from the surface of the soil to a depth of 8 inches (Ap horizon); calcareous reaction class - effervescence in all parts at depths between 10 and 20 inches; a udic soil moisture regime.