LOCATION EBBERT IL

Established Series
Rev. EGH-ZWW-TJE
11/2015

EBBERT SERIES

The Ebbert series consists of very deep, poorly drained and very poorly drained soils in depressions on broad loess covered till plains. They formed in loess. Slope ranges from 0 to 2 percent. Mean annual air temperature is about 13 degrees C (55 degrees F), and mean annual precipitation is about 1016 mm (40 inches).

TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Argiaquic Argialbolls

TYPICAL PEDON: Ebbert silt loam, on a nearly level slope in a cultivated field at an elevation of about 182 meters (597 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 18 cm (0 to 7 inches); very dark gray (10YR 3/1) silt loam, gray (10YR 5/1) dry; moderate fine granular structure; friable; few medium prominent yellowish brown (10YR 5/6) masses of oxidized iron in the matrix; slightly acid; clear smooth boundary.

A--18 to 33 cm (7 to 13 inches); very dark gray (10YR 3/1) silt loam, gray (10YR 5/1) dry; moderate medium granular structure; friable; few medium distinct yellowish brown (10YR 5/4) masses of oxidized iron in the matrix; moderately acid; clear smooth boundary. [Combined thickness of the A horizon is 20 to 41 cm (8 to l6 inches).]

Eg--33 to 56 cm (13 to 22 inches); dark gray (10YR 4/1) silt loam, gray (10YR 6/1) dry; weak medium platy structure parting to weak very fine subangular blocky; friable; common medium prominent yellowish brown (10YR 5/6) masses of oxidized iron in the matrix; strongly acid; clear smooth boundary. [10 to 41 cm (4 to l6 inches) thick]

Btg1--56 to 76 cm (22 to 30 inches); dark gray (10YR 4/1) silty clay loam, gray (10YR 6/1) dry; moderate fine and medium angular blocky structure; firm; many distinct very dark gray (10YR 3/1) clay films on faces of peds; common fine distinct yellowish brown (10YR 5/4) masses of oxidized iron in the matrix; moderately acid; gradual smooth boundary.

Btg2--76 to 102 cm (30 to 40 inches); dark gray (10YR 4/1) silty clay loam; moderate medium prismatic structure parting to moderate fine angular blocky; firm; common distinct very dark grayish brown (10YR 3/2) clay films on faces of peds; many fine and medium prominent yellowish brown (10YR 5/6) masses of oxidized iron in the matrix; moderately acid; clear wavy boundary.

Btg3--102 to 122 cm (40 to 48 inches); grayish brown (2.5Y 5/2) silty clay loam; weak medium subangular blocky structure; friable; common distinct very dark gray (10YR 3/1) clay films on faces of peds; few fine prominent yellowish red (5YR 4/6) and many fine prominent yellowish brown (10YR 5/8) masses of oxidized iron in the matrix; moderately acid; clear wavy boundary. [Combined thickness of the Btg horizon is 41 to 102 cm (16 to 40 inches).]

2Cg--122 to 152 cm (48 to 60 inches); gray (10YR 5/1) silty clay loam; massive; very firm; common medium prominent yellowish brown (10YR 5/6) masses of oxidized iron in the matrix; about 10 percent sand; slightly acid.

TYPE LOCATION: Effingham County, Illinois; about 1 mile southeast of Montrose; 600 feet north and 50 feet west of southeast corner of sec. 1, T. 8 N., R. 7 E.; USGS Woodbury, Illinois topographic quadrangle; latitude 39 degrees 9 minutes 50.4 seconds N. and longitude 88 degrees 21 minutes 38.9 seconds W.; UTM Zone 16N 382435.7 easting and 4335857.9 northing; NAD 83.

RANGE IN CHARACTERISTICS:
Thickness of the solum: 102 to more than 152 cm (40 to more than 60 inches)
Thickness of the loess: greater than 102 cm (40 inches)
Thickness of the mollic epipedon: 25 to 46 cm (10 to 18 inches) and includes the upper part of the argillic horizon in some pedons
Depth to the top of the argillic horizon: 31 to 61 cm (12 to 24 inches)
Particle-size control section: averages between 27 and 35 percent clay
Depth to carbonates: greater than 152 cm (60 inches)
Other features: the material beneath the loess contains more sand than the loess

Ap or A horizon:
Hue: 10YR
Value: 2 or 3 (4 or 5 dry)
Chroma: 1 or 2
Texture: commonly silt loam, but is silty clay loam in some pedons
Reaction: commonly strongly acid to slightly acid, but is neutral in some pedons that have been limed

Eg horizon:
Hue: 10YR
Value: 4 or 5 (6 or 7 dry)
Chroma: 1 or 2
Redox features: typically present
Reaction: strongly acid or moderately acid

Some pedons have a BE or B/E horizon.

Btg horizon, upper part:
Hue: 10YR to 5Y, or is neutral
Value: 3 to 5; subhorizons with color value of 3 are less than 15 cm (6 inches) thick
Chroma: 1
Texture: silty clay loam, or less commonly silt loam
Sand content: less than 10 percent
Reaction: very strongly acid to slightly acid

Btg horizon, lower part:
Hue: 10YR to 5Y, or is neutral
Value: 4 to 6
Chroma: 0 to 2
Texture: silty clay loam, or less commonly silt loam
Sand content: less than 10 percent
Reaction: very strongly acid to neutral

Some pedons have a BC horizon.

2Cg or Cg horizon:
Hue: 10YR to 5Y, or is neutral
Value: 4 to 6
Chroma: 0 to 2
Texture: silty clay loam, silt loam, clay loam, or loam
Reaction: moderately acid to neutral

Some pedons have a paleosol beneath the solum or beneath a 2Cg or Cg horizon. The paleosol is typically silty clay loam and the color includes value of 3.

COMPETING SERIES: These are the Corley, Edgington, Knight, Marissa, Normal, Speed, Thorp, and Vesser series. Corley soils have subhorizons more than 15 cm (6 inches) thick with color value of 3 or less in the upper part of the argillic horizon. Edgington and Speed soils are more than 61 cm (24 inches) to the top of the argillic horizon. Knight soils typically have a mean annual soil temperature of less than 12.8 degrees C (55 degrees F) in the soil temperature control section. Marissa soils have carbonates within a depth of 152 cm (60 inches). Normal soils do not have matrix color of chroma 2 or less immediately below the Eg horizon. Thorp soils have more than 10 percent sand in the lower part of the argillic horizon. Vesser soils have more than 10 percent sand throughout the argillic horizon.

GEOGRAPHIC SETTING: Ebbert soils are in depressions on broad loess covered Illinoian till plains. Slopes typically are less than 1 percent, but range from 0 to 2 percent. These soils formed in loess. They are underlain at depths of 102 to about 165 cm (40 to about 65 inches) by silty or loamy sediments or drift or a buried Sangamon paleosol formed in loamy sediments or drift or in Illinoian aged till. Mean annual temperature ranges from 12 to 14 degrees C (53 to 57 degrees F). Mean annual precipitation ranges from 965 to 1143 mm (38 to 45 inches).

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cisne, Cowden, Hoyleton, Newberry, and Oconee soils. All these soils lack a mollic epipedon and are on higher parts of the till plain rather than in depressions. All except Newberry average more than 35 percent clay in the particle-size control section. Newberry soils commonly are adjacent to Ebbert soils.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Poorly drained or very poorly drained. The potential for surface runoff is negligible to medium. Saturated hydraulic conductivity is moderately low to moderately high (0.42 to 4.23 micrometers per second). Permeability is slow or moderately slow.

USE AND VEGETATION: Most areas are drained and used for cropland. Corn, soybeans, and small grain are the principal crops. Native vegetation is hydrophytic grasses and sedges.

DISTRIBUTION AND EXTENT: MLRA 113 and LRUs 108A, 108B, 114B, and 115A in Illinois. The type location is in MLRA 113. The series is of moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana.

SERIES ESTABLISHED: Effingham County, Illinois, 1926.

REMARKS: Ebbert soils formed in Wisconsinan age Peoria loess. The underlying silty or loamy sediments or drift may be Roxana silts or gritty loess. The Illinoian age till typically contains a Sangamon paleosol.

Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: from the surface to a depth of 33 cm (13 inches) Ap and A horizons).
Albic horizon: from a depth of 33 to 56 cm (13 to 22 inches) (Eg horizon).
Argillic horizon: from a depth of 56 to 122 cm (22 to 48 inches) (Btg horizon).
Argiaquic feature: lack an abrupt textural change between the Eg and Btg horizon.
Aquic conditions: redox features present in all horizons.

National Cooperative Soil Survey
U.S.A.