LOCATION KINN OH

Established Series
Rev. GMG-RMG-SJH
11/2021

KINN SERIES

The Kinn series consists of very deep, moderately well drained soils formed in 46 to 91 cm (18 to 36 inches) of recent light colored alluvium overlying a buried dark colored soil on flood plains. Slope ranges from 0 to 2 percent. Mean annual precipitation is about 991 mm (39 inches), and mean annual air temperature is about 12 degrees C (54 degrees F).

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, calcareous, mesic Oxyaquic Udifluvents

TYPICAL PEDON: Kinn silt loam, on a 1 percent slope in a cultivated field at an elevation of 219 meters (720 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 25 cm (0 to 10 inches); brown (10YR 4/3) silt loam, brown (10YR 5/3) dry; 10 percent brownish yellow (10YR 6/6) strata of sandy loam; weak moderate and coarse subangular blocky structure parting to weak medium granular; friable; many fine roots; 2 percent gravel; strongly effervescent; moderately alkaline; abrupt smooth boundary. [5 to 25 cm (2 to 10 inches) thick]

A--25 to 51 cm (10 to 20 inches); brown (10YR 4/3) silt loam; 10 percent brownish yellow (10YR 6/6) strata of sandy loam; weak medium subangular blocky structure parting to moderate medium granular; friable; few fine roots; common distinct dark brown (10YR 3/3) organic coatings on vertical faces of peds; 2 percent gravel; strongly effervescent; moderately alkaline; clear wavy boundary. [20 to 76 cm (8 to 30 inches) thick]

Ab1--51 to 63 cm (20 to 25 inches); dark brown (10YR 3/3) silt loam; weak subangular blocky structure; friable; few fine roots; common faint very dark grayish brown (10YR 3/2) organic coatings on vertical faces of peds; 2 percent gravel; slightly effervescent; slightly alkaline; abrupt wavy boundary.

Ab2--63 to 96 cm (25 to 38 inches); very dark gray (10YR 3/1) loam; weak medium prismatic structure parting to moderate fine subangular blocky; friable; few fine roots; 5 percent gravel; strongly effervescent; slightly alkaline; gradual smooth boundary. [Combined thickness of the Ab horizon is 25 to 74 cm (10 to 29 inches).]

Bwb--96 to 127 cm (38 to 50 inches); yellowish brown (10YR 5/6) loam; weak coarse subangular blocky structure; firm; very few fine roots; many coarse prominent dark gray (10YR 4/1) iron depletions in the matrix; 5 percent gravel; strongly effervescent; slightly alkaline; clear smooth boundary. [0 to 46 cm (18 inches) thick]

C--127 to 142 cm (50 to 56 inches); strong brown (7.5YR 5/6) stratified sandy loam and silty clay loam; massive; firm; many coarse prominent dark gray (10YR 4/1) iron depletions in the matrix; 2 percent gravel; strongly effervescent; slightly alkaline; clear smooth boundary.

Cg1--142 to 157 cm (56 to 62 inches); dark gray (10YR 4/1) stratified silt loam and sandy loam; massive; firm; 2 percent gravel; strongly effervescent; moderately alkaline; abrupt smooth boundary.

Cg2--157 to 203 cm (62 to 80 inches); dark gray (10YR 4/1) gravelly coarse sandy loam; massive; very friable; 25 percent gravel; violently effervescent; moderately alkaline.

TYPE LOCATION: Ross County, Ohio; about 2 miles southeast of Kingston, in Green Township; 1,700 feet east and 2,500 feet north of the southwest corner of sec. 11, T. 9 N., R. 21 W.; USGS Kingston, Ohio topographic quadrangle; lat. 39 degrees 27 minutes 12 seconds N. and long. 82 degrees 53 minutes 08 seconds W., NAD 27.

RANGE IN CHARACTERISTICS:
Depth to the buried soil (Ab horizon): 46 to 91 cm (18 to 36 inches)
Depth to carbonates: present throughout the upper part of the control section

Ap horizon:
Hue: 10YR or 2.5Y
Value: 3 or 4
Chroma: 2 or 3
Texture: silt loam or loam
Clay content: 10 to 27 percent
Sand content: 10 to 30 percent
Rock fragment content: 0 to 5 percent
Reaction: neutral to moderately alkaline

A horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5
Chroma: 2 or 3
Texture: silt loam or loam
Clay content: 18 to 27 percent
Sand content: 10 to 25 percent but less than 15 percent fine sand or coarser
Rock fragment content: 0 to 5 percent
Reaction: neutral to moderately alkaline

Ab horizon:
Hue: 10YR, 2.5Y or is neutral
Value: 2 or 3
Chroma: 0 to 3
Texture: silt loam, loam, silty clay loam, or clay loam
Clay content: 18 to 35 percent
Sand content: 10 to 40 percent
Rock fragment content: 0 to 14 percent
Reaction: slightly alkaline

Bwb horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5
Chroma: 2 to 6
Texture: loam, clay loam, or silt loam
Clay content: 18 to 35 percent
Sand content: 20 to 40 percent
Rock fragment content: 0 to 14 percent
Reaction: moderately alkaline

C or Cg horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 3 to 5
Chroma: 1 to 6
Texture: stratified silty clay loam to sandy loam or the gravelly, very gravelly, or extremely gravelly analogs of these textures
Clay content: 15 to 35 percent
Sand content: 20 to 75 percent
Rock fragment content: 0 to 70 percent
Reaction: moderately alkaline

COMPETING SERIES: There are no other series in this family. Other series in related families are the Algiers and Sligo soils. Algiers soils are shallower to aquic conditions and have redox depletions higher in the control section. Sligo soils do not have carbonates in the upper part of the control section and do not have a buried soil within the control section.

GEOGRAPHIC SETTING: Kinn soils are on flood plains associated with the Wisconsinan or Illinoian till plain where the headwaters are in the Wisconsinan materials. Slope ranges from 0 to 2 percent. The soils formed in 46 to 91 cm (18 to 36 inches) of recent light colored, calcareous alluvium overlying a buried Mollisol. Mean annual precipitation ranges from 914 to 1118 mm (36 to 44 inches). Mean annual air temperature ranges 11 to 13 degrees C (52 to 56 degrees F). Frost-free period is 145 to 181 days. Elevation is 219 to 238 meters (720 to 780 feet) above mean sea level.

GEOGRAPHICALLY ASSOCIATED SOILS: These are Eldean, Fox, Gessie, and Ockley soils. Eldean, Fox, and Ockley soils are well drained and are on nearby outwash terraces. Gessie soils are well drained and are on similar landscape positions.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained. The depth to the top of an intermittent apparent high water table ranges from 61 to 107 cm (2 to 3.5 feet) between December and April in normal years. The potential for surface runoff is negligible to low. Saturated hydraulic conductivity is moderately high. Permeability is moderate in the recent alluvium and moderately slow in the buried soil. The soil is subject to occasional or frequent flooding.

USE AND VEGETATION: Kinn soils are cultivated. Corn, soybeans and wheat are the principal crops. Native vegetation is mixed hardwoods tolerant of flooding conditions.

DISTRIBUTION AND EXTENT: South central Ohio; MLRA 111A. The series is of small extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: AMHERST, MASSACHUSETTS

SERIES ESTABLISHED: Ross County, Ohio, 1997.

REMARKS: Areas of Kinn soils were previously mapped as Algiers soils. These soils were initially placed in the fine-silty family textural class.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: from the surface to a depth of 25 cm (Ap horizon).
Buried soil: at 51 cm (top of the Ab1 horizon).
Aquic conditions: iron depletions or gleyed matrix below a depth of 96 cm.

ADDITIONAL DATA: Characterization data is available for RO-103, the typifying pedon, from the Soil Characterization Laboratory at The Ohio State University, Columbus, OH.

National Cooperative Soil Survey
U.S.A.