LOCATION HOYTVILLE OH IN MIEstablished Series
TAXONOMIC CLASS: Fine, illitic, mesic Mollic Epiaqualfs
TYPICAL PEDON: Hoytville clay loam on planar surface in a cultivated field at an elevation of 700 feet above m.s.l. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 9 inches; very dark grayish brown (10YR 3/2) clay loam, grayish brown (10YR 5/2) dry; weak fine and medium granular structure; firm; common fine roots throughout; common fine distinct brown (7.5YR 4/4) masses of iron accumulation in the matrix; 2 percent rock fragments (subangular limestone and shale); slightly acid; clear smooth boundary. (6 to 9 inches thick)
Btg1--9 to 18 inches; dark gray (2.5Y 4/1) clay; moderate fine and medium subangular blocky structure; very firm; few fine roots between peds; few distinct gray (10YR 5/1) clay films on faces of peds; few distinct very dark grayish brown (10YR 3/2) organic stains on faces of peds; common medium prominent strong brown (7.5YR 5/6) masses of iron accumulation in the matrix; common fine distinct black (10YR 2/1) manganese threads in the matrix; 2 percent rock fragments (subrounded igneous, and subangular limestone and shale); neutral; clear wavy boundary.
Btg2--18 to 27 inches; grayish brown (10YR 5/2) clay; weak medium prismatic structure parting to moderate medium and coarse subangular blocky; firm; few fine roots between peds; common faint gray (10YR 5/1) clay films on faces of peds; many medium prominent strong brown (7.5YR 5/6) masses of iron accumulation in the matrix; common fine distinct black (10YR 2/1) manganese threads in the matrix; 2 percent rock fragments (subangular limestone and shale); neutral; clear wavy boundary.
Btg3--27 to 42 inches; grayish brown (10YR 5/2) clay; weak medium prismatic structure parting to moderate medium and coarse subangular blocky; firm; few fine roots between peds; common faint gray (10YR 5/1) clay films on faces of peds; common medium prominent yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; common medium distinct black (10YR 2/1) manganese threads in the matrix; 2 percent rock fragments (subrounded igneous, and subangular limestone and shale); slightly effervescent discontinuously at 37 inches; strongly effervescent at 40 inches; slightly alkaline; gradual wavy boundary.
Bt--42 to 52 inches; yellowish brown (10YR 5/4) clay; weak coarse angular blocky structure; firm; few fine roots between peds; common distinct gray (10YR 5/1) clay films on vertical faces of peds; common medium distinct gray (10YR 5/1) iron depletions in the matrix; common fine and medium distinct strong brown (7.5YR 5/6) masses of iron accumulation in the matrix; common fine distinct black (10YR 2/1) manganese threads in the matrix; 3 percent rock fragments (subrounded igneous, and subangular limestone and shale); strongly effervescent; slightly alkaline; clear wavy boundary. (Combined thickness of Btg and Bt horizons is 18 to 50 inches.)
BC--52 to 60 inches; dark yellowish brown (10YR 4/4) clay loam; weak coarse prismatic structure parting to weak coarse angular blocky; firm; few fine roots between peds; common distinct gray (10YR 5/1) coatings on vertical faces of prisms; few distinct light gray (10YR 7/1) carbonate coatings on vertical faces of prisms; few continuous prominent yellowish brown (10YR 5/6) hypocoats beneath the carbonate coatings; common fine and medium distinct gray (10YR 5/1) iron depletions in the matrix; many medium distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; common fine distinct black (10YR 2/1) manganese threads in the matrix; common medium distinct light gray (10YR 7/1) carbonate masses of vertical faces of prisms; 5 percent rock fragments (subrounded igneous, and subangular limestone and shale); strongly effervescent; moderately alkaline; clear wavy boundary. (0 to 16 inches thick)
Cd1--60 to 72 inches; dark yellowish brown (10YR 4/4) clay loam; massive, with widely spaced vertical fractures; very firm; few distinct light gray (10YR 7/1) carbonate coatings on faces of fractures; few discontinuous prominent yellowish brown (10YR 5/4) hypocoats beneath the carbonate coatings; common fine distinct grayish brown (10YR 5/2) iron depletions in the matrix; common fine distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; common fine distinct black (10YR 2/1) manganese threads on faces of fractures; common fine distinct light gray (10YR 7/1) carbonate masses on faces of fractures; 5 percent rock fragments (subrounded igneous, and subangular limestone and shale); strongly effervescent; moderately alkaline; clear wavy boundary.
Cd2--72 to 84 inches; brown (10YR 4/3) clay loam; massive; very firm; common fine faint grayish brown (10YR 5/2) iron depletions in the matrix; common fine distinct black (10YR 2/1) manganese threads in the matrix; 5 percent rock fragments (subrounded igneous, and subangular limestone and shale); strongly effervescent; moderately alkaline.
TYPE LOCATION: Wood County, Ohio; Henry Township; Ohio Agricultural Research and Development Center, Northwestern Branch (Hoytville farm); 2000 feet east and 1000 feet north of the southwest corner of sec. 18, T. 3 N., R. 10 E.; Hoytville, Ohio quadrangle; lat. 41 degrees 12 minutes 53 seconds N., and long. 83 degrees 45 minutes 30 seconds W., NAD 27.
RANGE IN CHARACTERISTICS: The depth to the base of the solum ranges from 40 to 65 inches. The depth to the base of the argillic horizon ranges from 40 to 55 inches. The depth to carbonates ranges from 30 to 55 inches. The depth to dense till is 50 to 70 inches. The depth to bedrock is greater than 80 inches. Rock fragments are glacial erratics of limestone, dolostone, shale and crystalline lithology. The particle-size control section averages 40 to 55 percent clay, but individual subhorizons may range to 35 percent clay.
The Ap horizon has hue of 10YR or 2.5Y, value of 2 or 3 (4 or 5 dry), and chroma of 1 or 2. Texture is clay, silty clay, silty clay loam, or clay loam. Rock fragment content ranges from 0 to 5 percent by volume. Reaction is slightly acid or neutral.
Some pedons have a BA horizon.
The Btg horizon has hue of 10YR to 5Y, value of 4 to 6, and chroma of 1 or 2. Texture is clay, silty clay, or less commonly clay loam or silty clay loam. Rock fragment content ranges from 1 to 10 percent by volume. Reaction ranges is slightly acid or neutral in the upper part, and ranges to moderately alkaline.
The Bt horizon has hue of 10YR or 2.5Y, value of 4 or 5, and chroma of 3 to 6. Texture is clay, silty clay, clay loam, or silty clay loam. Rock fragment content ranges from 1 to 10 percent by volume. Reaction ranges from neutral to moderately alkaline.
The BC or BCg horizon has hue of 10YR to 5Y, value of 4 or 5, and chroma of 1 to 4. Texture is clay loam or silty clay loam, or less commonly silty clay or clay. Rock fragment content ranges from 2 to 10 percent by volume. Reaction is slightly alkaline or moderately alkaline.
The Cd or Cdg has hue of 10YR to 5Y, value of 4 to 6, and chroma of 1 to 6. Texture is clay loam or silty clay loam, or less commonly clay or silty clay. Clay content ranges from 30 to 42 percent. Rock fragment content ranges from 2 to 10 percent by volume. Reaction is slightly alkaline or moderately alkaline. Calcium carbonate equivalent ranges from 15 to 30 percent.
COMPETING SERIES: These are the Lorain, Miner, and Monee series. Lorain soils have less than 2 percent rock fragments in the lower part of the series control section. Miner soils have calcium carbonate equivalent of less than 15 percent in the lower part of the series control section. Monee soils have an albic horizon.
GEOGRAPHIC SETTING: Hoytville soils are on lake plains of late Wisconsinan age. Slope range is 0 to 1 percent. Hoytville soils formed in till that has been leveled by wave action. Elevation is 600 to 800 feet. Mean annual precipitation is 27 to 36 inches, and mean annual temperature is 45 to 52 degrees F. The frost-free period is 140 to 165 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Nappanee, St. Clair, and Toussaint (T) soils. The somewhat poorly drained Nappanee soils and the moderately well drained St. Clair soils are in a catena with Hoytville soils. They are on slight rises, and on back slopes and shoulders of nearby knolls and ridges. In areas where the Toussaint and Hoytville soils are adjacent, the Toussaint soils are on slightly lower positions than the Hoytville soils.
DRAINAGE AND PERMEABILITY: Very poorly drained. A perched water table is at 1 foot above to 1 foot below the surface from January to April in most years. The permeability is moderately slow in the upper part of the solum, slow in the lower part of the solum, and slow or very slow in the substratum. The potential for surface runoff is negligible or very low.
USE AND VEGETATION: Nearly all of the Hoytville soils are cultivated. Corn, soybeans and wheat are the principal crops. Some areas are used for specialty crops, such as tomatoes and sugar beets. A relatively small proportion is in woodland. The native vegetation is deciduous swamp forest, primarily swamp white oak, bur oak, pin oak, elm, hickory, ash, cottonwood, basswood, and soft maple with some marsh grasses.
DISTRIBUTION AND EXTENT: The Hoytville series occurs primarily in MLRA 99 in northwestern Ohio, northeastern Indiana, and southeastern Michigan, and to a minor extent in MLRA 96 in west-central Michigan. The series is of large extent, about 850,000 acres.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana.
SERIES ESTABLISHED: Paulding County, Ohio, 1957.
REMARKS: A shallow to carbonates phase is currently recognized. These areas may be converted to the proposed Toussaint (T) series during MLRA update activities.
Diagnostic horizons and features recognized in this pedon are: ochric epipedon (mollic intergrade) - the zone from 0 to 9 inches (Ap); argillic horizon - the zone from 9 to 42 inches (Btg1, Btg2, Btg3); aquic conditions - the zone from 0 to 80 inches; densic contact at 60 inches (Cd1).
ADDITIONAL DATA: Laboratory characterization data from The Ohio State University Soil Characterization Laboratory is available for WD-84, the typical pedon.