LOCATION KILMANAGH MIEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, nonacid, mesic Aeric Epiaquepts
TYPICAL PEDON: Kilmanagh loam - on a nearly level area of 1 percent slope on a till plain cropped to sugar beets. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 9 inches; very dark gray (10YR 3/1) loam, light brownish gray (10YR 6/2 dry); weak fine subangular blocky structure; friable; few fine roots; 3 percent gravel and cobbles; slightly alkaline; abrupt smooth boundary. (7 to 12 inches thick)
Bg--9 to 26 inches; gray (10YR 5/1) loam; common medium prominent dark yellowish brown (10YR 4/4) mottles; weak fine subangular blocky structure; friable; few fine roots; 3 percent gravel and cobbles; slightly alkaline; clear wavy boundary. (2 to 22 inches thick)
Bw--26 to 29 inches; dark yellowish brown (10YR 4/4) loam; common medium prominent gray (5Y 5/1) mottles; weak fine subangular blocky structure; friable; 3 percent gravel and cobbles; slightly alkaline; clear wavy boundary. (2 to 20 inches thick)
C--29 to 44 inches; dark yellowish brown (10YR 4/4) loam; common medium prominent gray (5Y 5/1) mottles and a few medium distinct light brownish gray (10YR 6/2) mottles; very weak fine angular blocky structure; friable; 5 percent gravel and cobbles; slight effervescence; moderately alkaline; gradual wavy boundary. (13 to 20 inches thick)
Cd--44 to 60 inches; brown (10YR 5/3) loam; many medium faint dark yellowish brown (10YR 4/4) mottles and many medium distinct gray (5Y 5/1) mottles; massive; very firm; 5 percent gravel and cobbles; strong effervescence; moderately alkaline.
TYPE LOCATION: Huron County, Michigan; about 3 miles south of Pigeon; 160 feet south and 1,960 feet west of the northeast corner of sec. 26, T. 16 N., R. 10 E.
RANGE IN CHARACTERISTICS: Solum thickness and depth to carbonates is commonly 20 to 36 inches but ranges from 11 to 44 inches. The depth to very firm dense till ranges from 24 to 50 inches. Reaction throughout the solum ranges from slightly acid to mildly alkaline. Gravel content ranges from 0 to 15 percent throughout the pedon. Cobble content ranges from 0 to 25 percent in the A horizon and from 0 to 8 percent in the rest of the pedon.
The Ap horizon has hue of 10YR, value of 3 and chroma of 1 or 2. It is loam, cobbly loam, sandy loam or clay loam.
The Bg horizon has 10YR, 7.5YR or 5YR hue, value of 5 and chroma of 1 or 2. The Bw horizon has 10YR hue, value of 4 or 5 and chroma of 3 through 6.
The C horizons are loam or sandy loam calcareous till. The Cd horizon is massive or has thick platy structure.
COMPETING SERIES: This is Kendaia series. Kendaia soils contain more coarse fragments in their C horizons.
GEOGRAPHIC SETTING: Kilmanagh soils are on nearly level and depressional areas of till plains and moraines. Slopes range from 0 to 2 percent. They formed in calcareous loam till of Wisconsinan Age. Mean annual temperature ranges from 45 to 50 degrees F, and the mean annual precipitation ranges from 29 to 37 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: Kilmanagh soils are a part of a drainage sequence which includes the moderately well drained Grindstone soils and the somewhat poorly drained Shebeon and Aubarque soils. Badaxe soils are associated in some places where a thin sandy loam layer overlies the loam till.
DRAINAGE AND PERMEABILITY: Poorly drained. Potential surface runoff is negligible to low. Permeability is moderate in the solum and very slow in the C horizon.
USE AND VEGETATION: Most of these soils are cultivated. Corn, sugar beets, beans and small grains are the principal crops.
DISTRIBUTION AND EXTENT: Thumb area of lower Michigan. The series is of moderate extent, with a total of roughly 75,000 acres.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Huron County, Michigan; 1978.
REMARKS: This revision updated the classification from Fine-loamy, mixed, nonacid, mesic Aeric Haplaquepts to the present 8th edition of Soil Taxonomy.
Diagnostic horizons and features recognized in this pedon are:
Ochric epidedon - the zone from the surface to 9 inches (Ap horizon);
Cambic horizon - the zone from 9 to 29 inches;
Aquic soil moisture regime.