LOCATION BEVIER MOEstablished Series
TAXONOMIC CLASS: Fine, smectitic, mesic Aeric Vertic Epiaqualfs
TYPICAL PEDON: Bevier silty clay loam - on a convex slope of about 6 percent in pasture. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; very dark gray (10YR 3/1) silty clay loam, gray (10YR 5/1) dry; weak fine granular structure; friable; many very fine roots; neutral; abrupt smooth boundary. (6 to 10 inches thick)
BE--7 to 10 inches; dark grayish brown (10YR 4/2) silty clay loam; weak fine granular structure; friable; many very fine roots; few fine distinct yellowish brown (10YR 5/6) masses of iron accumulation in ped interiors; moderately acid; abrupt smooth boundary. (0 to 5 inches thick)
Btg--10 to 17 inches; dark grayish brown (10YR 4/2) silty clay; weak fine subangular blocky structure; firm; few very fine roots; common distinct clay films on faces of peds; common fine prominent brownish yellow (10YR 6/6) and few fine prominent strong brown (7.5YR 5/8) masses of iron accumulation in ped interiors; moderately acid; clear smooth boundary.
Bt--17 to 22 inches; brown (10YR 5/3) silty clay; weak fine and very fine subangular blocky structure; firm; common very fine roots; many distinct clay films on faces of peds; few fine prominent yellowish brown (10YR 5/8) and common fine distinct dark yellowish brown (10YR 3/6) masses of iron accumulation in ped interiors; slightly acid; clear smooth boundary.
B'tg--22 to 30 inches; grayish brown (10YR 5/2) silty clay loam; firm; common very fine roots; few distinct clay films on faces of peds; many fine prominent brown (7.5YR 5/4) masses of iron accumulation in ped interiors; weak fine subangular blocky structure; slightly acid; abrupt smooth boundary. (Combined thickness of the Bt horizon is 18 to 42 inches.)
2BCg--30 to 37 inches; light brownish gray (10YR 6/2) and yellowish brown (10YR 5/4) loam; weak coarse prismatic structure; friable; few very fine roots; neutral; abrupt smooth boundary. (0 to 12 inches thick)
3Btgb1--37 to 46 inches; yellowish brown (10YR 5/4) and gray (10YR 5/1) clay loam; weak medium prismatic structure parting to weak very fine angular blocky; firm; very few very fine roots; common prominent clay films on faces of peds; 1 percent fine gravel, neutral; clear smooth boundary. (0 to 15 inches thick)
3Btgb2--46 to 60 inches; multicolored yellowish brown (10YR 5/6), brown (7.5YR 5/2), gray (10YR 6/1) and dark yellowish brown (10YR 4/4) clay loam; moderate very fine angular blocky structure; firm; many prominent clay films on faces of peds; few fine soft masses of iron and manganese oxides; 1 percent fine gravel; neutral.
TYPE LOCATION: Adair County, Missouri; about 7 miles west of Novinger, 725 feet south and 3000 feet east of the northwest corner of sec. 30, T. 63 N., R. 17 W.
RANGE IN CHARACTERISTICS: Depth to the horizon with more than 20 percent sand(2B or 2C) commonly is 20 to 40 inches, but can range up to 48 inches.
The Ap or A horizon has color value of 2 or 3, 4 or 5 dry and chroma of 1 or 2. It is silt loam or silty clay loam. Reaction is moderately acid to neutral.
The E or BE horizon has hue of 10YR or 2.5Y, value of 4 or 5 and chroma of 2 or 3. It is silt loam or silty clay loam. Reaction is moderately acid to neutral.
The series control section averages 42 to 48 percent clay, individual subhorizons can have from 35 to 50 percent clay. The sand content averages 5 percent or less. The B horizon has hue of 7.5YR to 2.5Y, value of 4 to 6 and chroma of 2 to 4. Textures are silty clay or silty clay loam. Reaction is strongly acid to neutral.
The 2B, 2BC or 2C horizon, where present, has hue of 7.5YR to 2.5Y, value of 4 to 6 and chroma of 1 to 6. Texture is silty clay loam or silt loam with more than 5 percent sand or loam or clay loam with 20 to 40 percent sand. Reaction is strongly acid to neutral.
The 3Btgb horizon has hue of 7.5YR or 10YR, value of 4 to 6 and chroma of 1 to 6. It is clay loam or clay. Reaction is strongly acid to neutral.
COMPETING SERIES: This is Mexico series. Mexico soils have a horizon with a clay maximum of more than 50 percent.
GEOGRAPHIC SETTING: Bevier soils typically are on long, narrow, convex ridgetops off the broader uplands and sometimes on high stream terraces. These soils formed in a mantle of loess commonly 20 to 40 inches thick and loamy sediments and sometimes, glacial till. Slopes range from 2 to 9 percent. Mean annual temperature ranges from 52 to 57 degrees F, and mean annual precipitation ranges from 33 to 38 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Armstrong and Adco soils. Armstrong soils average more than 5 percent sand in the series control section and are on similar positions or lower slopes. Adco soils have an abrupt textural change and are on more broad ridgetops.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Runoff is medium. Permeability is slow. In undisturbed areas, the upper depth of a seasonal perched water table is present at 0.5 to 1.5 feet for short periods of time during November to April in most years.
USE AND VEGETATION: Most areas are used for cultivated crops. Some areas are used for pasture or hayland. Native vegetation is mixed grass and hardwood trees.
DISTRIBUTION AND EXTENT: Northern Missouri. The series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Macon County, Missouri, 1991.
REMARKS: The series type location is moved to an uneroded pedon in Adair County, Laboratory sample M9000140. Diagnostic horizons and features recognized in this series are: ochric epipedon - the zone from the surface of the soil to a depth of 10 inches (Ap and BE horizons); argillic horizon - the zone from approximately 10 inches to 30 inches and from 37 to 60 inches (Btg, Bt, B'tg and 3Btgb1 and 3Btgb2 horizons).