LOCATION TRUMBULL OH+PAEstablished Series
TAXONOMIC CLASS: Fine, illitic, mesic Typic Epiaqualfs
TYPICAL PEDON: Trumbull silty clay loam, 0 to 2 percent slopes in a nearly level cultivated field in a drainageway on the till plain. (Colors are for moist soil.)
Ap--0 to 8 inches; dark grayish brown (2.5Y 4/2) silty clay loam; moderate medium granular structure; friable; medium acid; abrupt smooth boundary. (6 to 10 inches thick)
Bg--8 to 14 inches; grayish brown (2.5Y 5/2) silty clay loam; few fine faint brown (10YR 4/3) mottles; strong medium subangular blocky structure; very firm; medium acid; clear wavy boundary. (0 to 10 inches thick)
Btg1--14 to 34 inches; gray (N 5/0) clay; few fine prominent yellowish red (5YR 4/6) and common fine distinct yellowish brown (10YR 5/6) mottles; moderate medium prismatic structure parting to moderate medium angular blocky; very firm; patchy thin gray (10YR 5/1) clay films on faces of peds; 2 percent coarse fragments; slightly acid; gradual wavy boundary. (5 to 20 inches thick)
Btg2--34 to 44 inches; gray (N 5/0) clay; many medium distinct yellowish brown (10YR 5/6) mottles; moderate coarse prismatic structure parting to moderate coarse angular blocky; firm; patchy thin gray (10YR 5/1) clay films on faces of peds; 2 percent coarse fragments; neutral; gradual wavy boundary. (7 to 20 inches thick)
Cg--44 to 60 inches; gray (N 5/0) silty clay loam; many medium distinct yellowish brown (10YR 5/6) mottles; massive; firm; 3 percent coarse fragments; moderately alkaline; strong effervescence.
TYPE LOCATION: Lorain County, Ohio; Camden Township; 500 feet south of Bronson Road, 200 feet east of S. R. 511.
RANGE IN CHARACTERISTICS: Thickness of solum ranges from 40 to 60 inches. Coarse fragments are dominantly gravel size but cobblestones and boulders are in some pedons. Content of coarse fragments ranges from 2 to 10 percent. Reaction is neutral to extremely acid in the upper part of the B horizon, and medium acid to neutral or mildly alkaline in the lower part of the B horizon. The C horizon ranges from neutral to moderately alkaline and is calcareous in some or all parts.
The Ap horizon ranges from gray (10YR 5/1) through dark grayish brown (2.5Y 4/2). In wooded areas a 1 to 4 inch thick A1 horizon is present and ranges from very dark gray (10YR 3/1) through very dark brown (10YR 2/2). An E horizon 2 to 9 inches thick, underlies A1 horizons and some Ap horizons. The A2 horizon ranges from light brownish gray (10YR or 2.5Y 6/2) through dark gray (10YR 4/1 or N 4/0). The A and E horizons are silty clay loam or silt loam.
The B horizons, to a depth of 30 inches, are neutral or have 10YR through 5Y hues, values of 4 through 6, and chromas or 0, 1, or 2 with common to many mottles of 10YR through 5Y hues, values of 4 or 5, and chromas of 4 through 8. Below 30 inches the range also includes chromas of 3 and 4. Surfaces of peds have the same range of hues as the matrix, values of 3 through 5, and chroma of 2 or less. It is dominantly silty clay or clay and the average clay content of the control section is between 40 and 60 percent. Some subhorizons are silty clay loam, clay loam or clay.
The C horizon has hues of 10YR, 2.5Y, or 5Y; values of 4 through 6; and chromas of 1 through 4. It is clay loam, silty clay loam, or clay.
COMPETING SERIES: These are the Canadice, Condit, and Wetzel series in the same family and the Hoytville, Latty, Lorain, Mahoning, Miner, and Toledo series in related families. Canadice soils essentially lack coarse fragments. Condit soils have less than 40 percent clay in the control section. Wetzel soils are neutral or mildly alkaline in the upper part of the B horizon. Hoytville, Lorain, and Miner soils have Ap horizons with moist values of 3 or less. Latty and Toledo soils lack argillic horizons. Mahoning soils have a subhorizon within 30 inches that has matrix colors with chroma of more than 2.
GEOGRAPHIC SETTING: Trumbull soils are on level to gently sloping and depressional portions of till plains. Slopes are dominantly less than 4 percent but range to 6 percent. The soils developed in low-lime glacial till. Mean annual precipitation ranges from 33 to 38 inches. The mean annual temperature is about 51 degrees F.; the mean summer temperature is about 72 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: Trumbull soils are in drainage sequences with the moderately well drained Ellsworth, somewhat poorly drained Mahoning, and very poorly drained Miner sois, and with the moderately well drained Geeburg and somewhat poorly drained Remsen soils. Other associated soils are the poorly drained Sebring soils on silty lacustrine deposits and poorly drained Canadice soils on clayey lacustrine deposits.
DRAINAGE AND PERMEABILITY: Poorly drained with low or ponded runoff and slow or very slow permeability.
USE AND VEGETATION: Much of the Trumbull soils have been cleared and cultivated. Many areas of Trumbull soils are used for pasture or woodland and are no longer cultivated. Many areas near the cities are in non-agricultural uses. The dominant tree species are elm, soft maple, pin oak, and ash. Cultivated areas are used for corn, meadow, and hay.
DISTRIBUTION AND EXTENT: Northeastern Ohio. The series is of moderate extent with an estimated area of about 65,000 acres.
MLRA OFFICE RESPONSIBLE: Amherst, Massachusetts
SERIES ESTABLISHED: Geauga County, Ohio, 1914.
REMARKS: The Trumbull series was classified as Low-Humic Gley soils in the 1938 classification system.
ADDITIONAL DATA: Characterization data for the Trumbull series include profiles LR-S4, MH-20, and MH-42.
Classification only was changed in 11/94, competing series and other changes will be made later.