LOCATION CHENAULT KYEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, semiactive, mesic Typic Hapludalfs
TYPICAL PEDON: Chenault gravelly silt loam--on a 10 percent sideslope, in cultivation. (Colors are for moist soil.)
Ap--0 to 11 inches; brown (1OYR 4/3) gravelly silt loam; weak fine granular structure; very friable; common fine roots; 15 percent pebbles and subrounded chert; strongly acid; abrupt smooth boundary. (6 to 12 inches thick)
Bt1--11 to 23 inches; brown (7.5YR 4/4) gravelly silty clay loam; moderate fine and medium subangular blocky structure; friable; few fine roots; common clay films on faces of peds; 30 percent pebbles and subrounded chert; medium acid; gradual smooth boundary. (11 to 26 inches thick)
Bt2--23 to 41 inches; brown (7.5YR 4/4) gravelly silty clay loam, few medium distinct yellowish brown (1OYR 5/6) mottles; moderate fine and medium subangular blocky structure; firm; few fine roots; common clay films on faces of peds; many fine black concretions; 15 percent pebbles and subrounded chert; medium acid; clear smooth boundary. (5 to 19 inches thick)
2Bt3--41 to 49 inches; dark yellowish brown (1OYR 4/4) gravelly clay; many fine and medium distinct very dark gray (IOYR 3/1) mottles; weak fine and medium subangular blocky structure; very firm; few fine roots; few clay films on faces of peds; 30 percent pebbles and subrounded chert; medium acid; abrupt smooth boundary. (0 to 13 inches thick)
2R--49 inches; hard gray limestone.
TYPE LOCATION: Mercer County, Kentucky; 9 miles northeast of Harrodsburg, on US 68, 0.8 mile north of US-68 on private road, 300 feet northwest of cemetery.
RANGE IN CHARACTERISTICS: Thickness of solum ranges from 40 to 60 inches. Depth to bedrock is 40 to 80 inches or more. Soil reaction ranges from strongly acid to neutral in the A horizon, strongly acid to slightly acid in the Bt horizon, and medium acid to neutral in the 2Bt and 2C horizons. The content of pebbles, chert fragments, subrounded chert fragments, subrounded geodes or flaggy limestone ranges from 5 to 30 percent in the A horizon, from 10 to 30 percent in the Bt horizon, and from 5 to 30 percent in the 2Bt3 and 2C horizons. Fragments are of gravel to flaggy size.
The Ap horizon has 10YR hue, value of 4 or 5, and chroma of 3 or 4. Texture of the fine earth fraction is silt loam, or loam.
The Bt horizon has hue of 7.5YR or 1OYR, value of 4 or 5, and chroma of 4 to 6. Most pedons have mottles in shades of brown in the lower part of the Bt horizon. Texture of the fine earth fraction is silty clay loam, clay loam, or loam.
The 2Bt3 horizon has hue of 1OYR or 7.5YR, value of 4 or 5, and chroma of 4 or 6, and has few to many brown or gray mottles. Texture of the fine earth fraction is silty clay loam, silty clay, or clay.
When present, the 2C horizon is mottled in hue of 7.5YR or 1OYR, value of 3 to 7, and chroma of 1 to 8. Texture of the fine earth fraction is silty clay or clay.
COMPETING SERIES: These are the Amanda, Belmont, Belmore, Chili, Coggon, Conestoga, Douds, El Dara, Gallman, Grellton, Hayden, Hebron, Hickory, High Gap, Hollinger, Kalamazoo, Kanawha, Kendallville, Kidder, Kosciusko Leroy, Letort, Lindley, Mandewille, Martinsville, McHenry, Miami, Mifflin, Military, Nodine, Nordan, Ockley, Owosso, Pecatonica, Princeton, Rawson, Relay, Renova, Richland, Riddles, Sisson, Strawn, Summitville, Theresa, Wawasee, Westville, Whalen, Woodbine and Wykoff series. The family is large, but those in unglaciated areas are Belmont, Conestoga, Douds, Hollinger, Kanawha, Mandeville, Mifflin, Nordin, Relay, and Summitville series. Belmont and Summitville soils have B horizons with 5YR hue of redder. Conestoga soils have schist fragments. Douds soils have an average annual precipitation of less than 34 inches. Hollinger, Mandeville, Nordin and Relay soils have sola less than 40 inches thick. Kanawha so11s have fine sandy loam, loam, or sandy clay loam C horizons. Mifflin soils have B horizons with 30 to 60 percent sand and lack coarse fragments. Hebron, Leroy, Letort, Military, Nodine, Princeton, Renona, Theresa, and Whalen have cooler temperature as they occur in states north of Kentucky.
GEOGRAPHIC SETTING: Old high terraces with karst slopes ranging from 2 to 20 percent. Chenault soils formed in old alluvium over limestone or over residuum of weathered limestone. Near the type location the average annual temperature is about 56 degrees F., and the average annual precipitation is about 47 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Caleast, Fairmount, and McAfee series. Caleast soils have more than 35 percent clay in the control section. Fairmount soils have a mollic epipedon, have bedrock at a depth of 10 to 20 inches, and have more than 35 percent clay in the control section. McAfee soils have bedrock at a depth of 20 to 40 inches and have more than 35 percent clay in the control section.
DRAINAGE AND PERMEABILITY: Well drained. Medium runoff. Permeability is moderate.
USE AND VEGETATION: Most areas of this soils are cultivated. Corn, small grains, soybeans, hay, or pasture are the principal crops. Native forest has oaks, maple, sycamore, poplar, hickory, and black walnut as dominant species.
DISTRIBUTION AND EXTENT: Central part of Kentucky. Extent is small.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Mercer County, Kentucky; 1979.
REMARKS: Diagnostic horizons and features recognized in the typical pedon are:
Ochric epipedon - the zone from 0 to 11 inches (Ap).
Argillic horizon - the zone from 11 to 49 inches (Bt1, Bt2, 2Bt3).
Lithic contact - at 49 inches (2R).