LOCATION JUDA WIEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Mollic Oxyaquic Hapludalfs
TYPICAL PEDON: Juda silt loam - on a 4 percent convex slope in a cultivated field at an elevation of about 930 feet above mean sea level. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; weak fine granular structure; friable; neutral; abrupt smooth boundary. (6 to 9 inches thick)
E--7 to 9 inches; brown (10YR 5/3) silt loam; weak thin platy structure; friable; clean silt grains on faces of most peds; slightly acid; clear wavy boundary. (0 to 6 inches thick)
BE--9 to 13 inches; brown (10YR 4/3) silt loam; moderate fine subangular blocky structure; friable; clean silt grains on faces of most peds; slightly acid; clear wavy boundary. (2 to 7 inches thick)
Bt1--13 to 22 inches; brown (10YR 4/3) silty clay loam; moderate medium subangular blocky structure; firm; few faint dark brown (10YR 3/3) clay films on most faces of peds; moderately acid; clear wavy boundary. (5 to 18 inches thick)
2Bt2--22 to 33 inches; brown (10YR 4/3) silty clay loam; moderate medium angular and subangular blocky structure; firm; common faint dark brown (10YR 3/3) clay films on faces of most peds; 5 to 10 percent fine gravel; moderately acid; clear wavy boundary.
2Bt3--33 to 36 inches; dark yellowish brown (10YR 4/4) and yellowish brown (10YR 5/4) silty clay loam; moderate medium angular and subangular blocky structure; firm; common faint dark brown (10YR 3/3) clay films on vertical faces of peds; few fine faint yellowish brown (10YR 5/4) masses of iron accumulation in the matrix; 10 to 15 percent fine gravel; slightly acid; clear wavy boundary. (Combined thickness of the 2Bt horizons is 10 to 16 inches.)
2C--36 to 60 inches; yellowish brown (10YR 5/4) silty clay loam; weak fine angular blocky structure; firm; few fine distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; 10 to 15 percent fine gravel; strongly effervescent; moderately alkaline.
TYPE LOCATION: Green County, Wisconsin; about 4 miles southeast of Browntown; 2,340 feet south and 400 feet west of the northeast corner of sec. 13, T. 1 N., R. 6 E. USGS Monroe, Wisconsin Topographic quadrangle; lat. 42 degrees 33 minutes 24 seconds N., and long. 89 degrees 43 minutes 16 seconds W., NAD 27.
RANGE IN CHARACTERISTICS: Depth to the base of the argillic horizon and depth to carbonates both range from 24 to 40 inches. Thickness of the loess mantle ranges from 20 to 40 inches. The particle-size control section averages from 28 to 35 percent clay and less than 15 percent fine or coarser sand. Smectite is the dominant clay mineral in the loess. The till averages 27 to 40 percent clay and 5 to 25 percent fine sand or coarser. Illite is the dominant clay mineral in the till. Coarse fragments are absent in the loess. Volume of coarse fragments ranges from 5 to 20 percent in the till. Reaction is naturally moderately acid or slightly acid in the surface layer and upper subsoil but ranges to neutral, where the soil is limed. Reaction ranges from slightly acid to moderately alkaline in the lower subsoil and is slightly alkaline or moderately alkaline in the substratum. Redox accumulations and saturation occur within a depth of 40 inches for 1 month or more per year in 6 or more out of 10 years.
The Ap horizon has hue of 10YR, and value and chroma of 2 or 3. Uncultivated pedons have A horizons with similar colors. Texture of the Ap or A horizon is silt loam.
The E horizon has hue of 10YR, value of 4 or 5, and chroma of 2 or 3. Texture is silt loam.
The BE horizon has hue of 7.5YR or 10YR, and value and chroma of 3 or 4. Texture is silt loam or silty clay loam.
The Bt horizon has hue of 7.5YR or 10YR and value and chroma of 3 or 4. Texture is silt loam or silty clay loam.
The 2Bt horizon has hue of 7.5YR, 10YR, or 2.5Y and value and chroma of 3 or 4. Texture is silty clay, silty clay loam, or clay loam. Some pedons have a 2BC horizon with hue of 7.5YR, 10YR, or 2.5Y; value of 3 to 5; and chroma of 3 to 6. Value and chroma of 3 do not occur together. Texture is silty clay loam or clay loam or the gravelly analogs.
The 2C horizon has color and texture like the 2BC horizon described above.
COMPETING SERIES: These are the Barony, Downsouth, Grays, Kaneville, Newvienna, Richview, Throckmorton, Windere, and Wingate series. A similar soil is the Cadiz series. Barony soils are more than 40 inches deep to carbonates and are stratified in the lower part of the series control section and have less than 25 percent clay there. Downsouth and Richview soils do not have carbonates within the series control section. Grays soils are stratified in the lower part of the series control section and have less than 20 percent clay there. Kanesville soils have a loess mantle 40 to 60 inches thick and are more than 40 inches deep to carbonates. Newvienna soils do not have carbonates or a lithologic discontinuity or rock fragments within the series control section. Throckmorton soils are 40 to 60 inches deep to carbonates and to a densic contact. Windere soils have less than 20 percent clay in the lower part of the series control section. Wingate soils have less than 27 percent clay in the lower part of the series control section. Cadiz soils have moist color value greater than 3 or dry color value greater than 5.5 in the surface layer after mixing to 7 inches.
GEOGRAPHIC SETTING: Juda soils are loess-mantled ground moraines of Wisconsinan Age. Slope ranges from 2 to 12 percent. The soil formed in loess and in the underlying moderately fine-texturedtill. Mean annual precipitation ranges from 28 to 34 inches. Mean annual temperature ranges from 47 to 53 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are mainly the competing Downs soils and Cadiz, Durand, Griswold, and Morley soils. All of these soils are in similare landscape positions. Downs soils have a similar surface layer color, but are in nearby areas where the loess mantle is thicker. Cadiz soils have a similar loess mantle thickness, but have a light colored surface layer. Durand soils are also nearby, but have a thicker dark colored surface layer.
DRAINAGE AND PERMEABILITY: Moderately well drained. The potential for surface runoff is medium or high. Permeability is moderate in the loess and moderately slow in the till. These soil have a perched seasonal high water table at a depth of 2.5 to 3.5 feet for 1 month or more per year in 6 or more out of 10 years.
USE AND VEGETATION: Most areas are used for cropland. Common crops are corn, soybeans, small grain and hay. Native vegetation is mixed grasses and hardwoods.
DISTRIBUTION AND EXTENT: This soil occurs only in Green County, Wisconsin. It is of small extent.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Green County, Wisconsin, 1969.
REMARKS:
7/04 To date 3352 acres have been correlated in Green County Wisconsin where the typical pedon has redox features within 40 inches. Therefore, this revision redefines this series to moderately well drained only (Mollic Oxyaquic Hapludalfs).
Diagnostic horizons and features recognized in this pedon are: ochric epipedon - 0 to 13 inches (Ap,E, BE); argillic horizon - 13 to 36 inches (Bt1, 2Bt2, 2Bt3 horizons); mollic subgroup - have an Ap horizon with moist color value of less than 4 and dry color value of less than 6; oxyaquic feature redox accumulations and saturation within a depth of 40 inches.