LOCATION CRESTMEADE MOEstablished Series
TAXONOMIC CLASS: Fine, smectitic, mesic Vertic Argialbolls
TYPICAL PEDON: Crestmeade silt loam - on a linear ridgetop of 1 percent slope in wheat at an elevation of 945 feet. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 11 inches; very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; weak fine granular structure; friable; many very fine roots; neutral; abrupt smooth boundary. (Combined thickness of the Ap and A horizons is 6 to 14 inches.)
E--11 to 18 inches; dark grayish brown (10YR 4/2) silt loam; weak medium platy structure parting to weak very fine subangular blocky; friable; many very fine roots; few distinct organic coatings; many prominent silt coats on faces of peds; few fine iron and manganese concretions; moderately acid; abrupt smooth boundary. (3 to 9 inches thick)
Bt--18 to 24 inches; dark brown (7.5YR 3/2) silty clay, brown (7.5YR 4/2) dry; strong fine subangular blocky structure; firm; many very fine roots; many prominent clay films on faces of peds; common shiny pressure faces; common fine prominent yellowish red (5YR 4/6) and common fine distinct dark yellowish brown (10YR 4/6) masses of iron accumulation; few fine iron and manganese concretions; moderately acid; gradual smooth boundary. (0 to 10 inches thick)
Btg1--24 to 34 inches; dark grayish brown (2.5Y 4/2) silty clay; moderate fine subangular blocky structure; firm; few very fine roots; common prominent clay films on faces of peds; common shiny pressure faces; few fine prominent strong brown (7.5YR 4/6) and common distinct dark yellowish brown (10YR 4/4) masses of iron accumulation; few fine iron and manganese concretions; moderately acid; gradual smooth boundary.
Btg2--34 to 42 inches; grayish brown (2.5Y 5/2) silty clay loam; moderate fine subangular blocky structure; firm; few very fine roots; common prominent clay films on faces of peds; few shiny pressure faces; many fine prominent yellowish brown (10YR 5/6) and few fine prominent strong brown (7.5YR 4/6) masses of iron accumulation; few fine iron and manganese concretions; slightly acid; gradual smooth boundary.
Btg3--42 to 52 inches; grayish brown (2.5Y 5/2) silty clay loam; weak fine subangular blocky structure; firm; few very fine roots; common distinct clay films on faces of peds; common fine prominent dark yellowish brown (10YR 4/4) and few fine prominent strong brown (7.5YR 4/6) masses of iron accumulation; few fine iron and manganese concretions; neutral; gradual smooth boundary. (Combined thickness of the Btg horizon is 24 to 40 inches.)
Cg--52 to 60 inches; gray (10YR 5/1) silty clay loam; massive; firm; few very fine roots; few distinct clay films in root channels; common fine prominent yellowish brown (10YR 4/6) and few fine prominent strong brown (7.5YR 4/6) masses of iron accumulation; few fine iron and manganese concretions; neutral.
TYPE LOCATION: Cooper County, Missouri; about 6.5 miles south of Bunceton; 2000 feet east and 300 feet south of the northwest corner of sec. 5, T. 45 N., R. 17 W; Tipton quadrangle, lat. 38 degrees 41 minutes 53 seconds N. and long. 92 degrees 48 minutes 48 seconds W.
RANGE IN CHARACTERISTICS: The combined thickness of the mollic epipedon is 10 to 24 inches, commonly including the Bt horizon.
The Ap horizon has color value of 2 or 3, 4 or 5 dry and chroma of 1 to 3. It is silt loam or silty clay loam and moderately acid to neutral.
The E horizon has hue of 10YR or 2.5Y, value of 3 to 6 and chroma of 1 or 2. It is silt loam or silty clay loam and strongly acid to neutral.
The Bt horizon has hue of 7.5YR to 5Y, value of 2 or 3 and chroma of 1 or 2. The Btg horizon has hue of 10YR to 5Y, value of 4 to 6 and chroma 1 to 8. Texture is silty clay or silty clay loam. Clay ranges from 42 to 60 percent and averages more than 45 percent in the series particle size control section. Reaction is strongly acid to neutral.
The Cg horizon has color similar to the Btg horizon. It is silt loam or silty clay loam with 0 to 5 percent gravel. Reaction is moderately acid to neutral. Some pedons have a BCg horizon.
COMPETING SERIES: These include the Barbert, Chauncey, Edina, Fillmore, Goose Lake, Massie, Plankinton, Rolfe, Scott, Sperry and Sturges soils. Hartwell is a similar series. Barbert, Edina, Fillmore, Goose Lake, Massie, Plankinton and Scott soils aerage less than 54 degrees F.in the soil temperature control section. Chauncey and Sperry soils average less than 45 percent clay in the upper part of the argillic horizon. Rolfe soils have more than 25 percent sand in the lower part of the control section. Sturges soils have a Bt horizon with chroma of 3 or more. Hartwell soils average more than 59 degrees F. in the soil temperature control section.
GEOGRAPHIC SETTING: Crestmeade soils are on broad upland ridgetops and concave sideslopes and formed in loess. Slopes range from 0 to 5 percent. The mean annual temperature ranges from 54 to 57 degrees F., and mean annual precipitation ranges from 36 to 42 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cotton (T), Leslie, Maplewood and Pershing soils. The Cotton (T), Maplewood, and Pershing soils do not have a mollic epipedon. Leslie soils do not have an abrupt textural change. Cotton (T) and Maplewood soils are on lower positions. Leslie soils are on similar positions. Pershing soils are on more rounded ridgetops.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Runoff is slow. Permeability is slow. In undisturbed areas a perched water table has an upper limit of 0.5 to 1.5 feet during November to April in most years.
USE AND VEGETATION: Crestmeade soils are used to grow row crops, small grain, and grasses and legumes for hay, and pasture. The principal crops are corn, sorghum, and wheat. Native vegetation is tall prairie grasses.
DISTRIBUTION AND EXTENT: Central Missouri. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Chariton County, Missouri, 19931.
REMARKS: Diagnostic horizons and features recognized in this series are: mollic epipedon - the zone from the surface of the soil to a depth of 11 inches and from 18 inches to 24 inches (Ap and Bt horizons); albic horizon - the zone from approximately 11 to 18 inches (E horizon); argillic horizon - the zone from approximately 18 to 52 inches (Bt, Btg1, Btg2 and Btg3 horizons).