LOCATION PERING MOEstablished Series
TAXONOMIC CLASS: Fine, smectitic, mesic Aquertic Hapludalfs
TYPICAL PEDON: Pering silty clay loam at an elevation of 1,080 feet on a 3 percent convex slope in hayland. The pedon is from an eroded unit. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; very dark gray (10YR 3/1) silty clay loam; dark gray (10YR 4/1) dry; moderate medium granular structure; friable; many fine roots; moderately acid; clear smooth boundary. (6 to 10 inches thick)
Bt1--7 to 12 inches; brown (10YR 5/3) silty clay; weak fine subangular blocky structure; firm; common fine roots; common distinct clay films on faces of peds; strongly acid; clear smooth boundary. (3 to 9 inches thick)
Bt2--12 to 17 inches; brown (10YR 5/3) silty clay; moderate medium subangular blocky structure; firm; few fine roots; many prominent clay films on faces of peds; common fine faint dark grayish brown (10YR 4/2) iron depletions; common fine prominent strong brown (7.5YR 4/4) masses of iron accumulation throughout; strongly acid; gradual smooth boundary. (0 to 8 inches thick)
Btg1--17 to 28 inches; grayish brown (2.5Y 5/2) silty clay; moderate fine subangular blocky structure; firm; few fine roots; common fine distinct dark grayish brown (10YR 4/2) iron depletions; common fine prominent brown (7.5YR 4/4) masses of iron accumulation throughout; strongly acid; gradual smooth boundary.
Btg2--28 to 38 inches; light brownish gray (2.5Y 6/2) silty clay loam; moderate fine subangular blocky structure; firm; common distinct clay films on faces of peds; common medium prominent brown (7.5YR 4/4) masses of iron accumulation throughout; few fine iron and manganese concretions; moderately acid; gradual smooth boundary.
Btg3--38 to 47 inches; light brownish gray (2.5Y 6/2) silty clay loam; weak fine subangular blocky structure; firm; few distinct clay films on faces of peds; common fine prominent (7.5YR 4/4) and common medium prominent dark yellowish brown (10YR 4/4) masses of iron accumulation throughout; common fine iron and manganese concretions; slightly acid; gradual smooth boundary. (Combined thickness of the Btg horizon is 24 to 40 inches.)
BCg--47 to 60 inches; light brownish gray (2.5Y 6/2) silty clay loam; weak fine subangular blocky structure; firm; common fine prominent dark yellowish brown (10YR 4/4), brown (7.5YR 4/4) and yellowish red (5YR 4/6) masses of iron accumulation throughout; few fine iron and manganese concretions; slightly acid.
TYPE LOCATION: Mercer County, Missouri; about one mile east of Mercer; 300 feet east and 800 feet south of the northwest corner, sec 21, T. 66 N., R. 23 W.; Lineville quadrangle, lat. 40 degrees 30 minutes 53 seconds N. and long. 93 degrees 30 minutes 25 seconds W.
RANGE IN CHARACTERISTICS: Free calcium carbonates are not present to depths of 6 feet or more. Sand content is less than 10 percent to 40 inches or more.
The Ap or A horizon has hue of 10YR, value of 3 and chroma of 1 or 2. It is silt loam or silty clay loam. Reaction is strongly acid to neutral. Uneroded pedons have an E horizon or BE horizon.
The Bt horizon has hue of 10YR, value of 4 or 5 and chroma of 3 or 4. It may have masses of iron accumulation of differing hue with higher value and chroma and iron depletions of lower chroma. The Btg horizon has hue of 10YR or 2.5Y, value of 4 to 6 and chroma of 2 with masses of iron accumulation with different hue and higher chroma. Texture is silty clay loam or silty clay with a clay maximum of 50 percent or more. Reaction is strongly acid or moderately acid.
The BCg or Cg horizons have color similar to the Btg horizon. They are silty clay loam or silt loam. Reaction is strongly acid to neutral. Some pedons have more than 10 percent sand at depths below 40 inches.
COMPETING SERIES: These are the Armstrong, Hoyleton, Mystic and Sunbury series. Armstrong and Hoyleton soils have horizons within 40 inches with more than 10 percent sand. Mystic soils have more than 10 percent sand throughout the solum. Sunbury soils have free carbonates above depths of 60 inches.
GEOGRAPHIC SETTING: Pering soils typically are on convex slopes in the loess covered till plain. They are also on loess covered high stream terraces in some places. Slopes range from 2 to 14 percent. They formed in loess or loess and pedisediment. The mean annual temperature ranges from 50 to 54 degrees F., and mean annual precipitation ranges from 34 to 38 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Armstrong, Belinda, Gara and Rinda series. Armstrong soils are on lower landscape positions. Belinda soils have an abrupt textural change and are on more level interfluves. Gara soils have more sand throughout and are on lower landscape positions. Rinda soils have dominant chroma of 2 or less throughout the series control section and are on lower landscape positions.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Permeability is very slow. Runoff is medium. In undisturbed areas, a perched water table has an upper limit of 1.5 to 2.5 feet during November to May in most years. USE AND VEGETATION: Most areas are in cultivated crops. Some areas are in pasture, hayland or woodland. Native vegetation is mixed grasses and trees.
DISTRIBUTION AND EXTENT: Northwest Missouri and possibly southwest Iowa.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Mercer County, Missouri, 1995.
REMARKS: NSSL sample no. S91MO-129-012. Some areas of these soils have previously been mapped as the Pershing series. Diagnostic horizons and features recognized in this series are: ochric epipedon - the zone from the surface of the soil to a depth of 7 inches (Ap horizon); argillic horizon - the zone from approximately 7 inches to 47 inches (Bt1, Bt2, Btg1, Btg2 and Btg3 horizons).