LOCATION JANUDE NE+SDEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Cumulic Haplustolls
TYPICAL PEDON: Janude loam - on a nearly level slope in a cultivated field. (Colors are for dry soil unless otherwise stated.)
Ap--0 to 18 centimeters; dark gray (10YR 4/1) loam, black (10YR 2/1) moist; weak fine granular structure; slightly hard, very friable; neutral; abrupt smooth boundary. (13 to 20 centimeters thick)
A--18 to 41 centimeters; dark gray (10YR 4/1) loam, black (10YR 2/1) moist; weak coarse prismatic structure parting to weak fine subangular blocky; slightly hard, very friable; neutral; abrupt smooth boundary. (20 to 28 centimeters thick)
AC--41 to 102 centimeters; gray (10YR 5/1) loam, very dark grayish brown (10YR 3/2) moist; weak coarse prismatic structure parting to weak medium and fine subangular blocky; slightly hard, very friable; violent effervescence; moderately alkaline; clear wavy boundary. (36 to 66 centimeters thick)
C1--102 to 132 centimeters; light brownish gray (10YR 6/2) loam, dark grayish brown (10YR 4/2) moist; many medium distinct reddish brown (5YR 4/4) moist iron masses in the matrix; massive; slightly hard, very friable; slight effervescence; moderately alkaline; abrupt smooth boundary. (20 to 36 centimeters thick)
C2--132 to 152 centimeters; light gray (10YR 7/1) loam; grayish brown (10YR 5/2) moist; few medium distinct reddish brown (5YR 4/4) moist iron masses in the matrix; massive; hard, friable; slight effervescence; moderately alkaline.
TYPE LOCATION: Major Land Resource Area 102C - Loess Uplands; Dodge County Nebraska Subset; about 2 1/2 miles west and 1/2 miles north of Ames; 2376 feet south and 50 feet east of the northwest corner, sec. 7, T. 17 N., R. 7 E. USGS Malmo NW quadrangle; 41 degrees 27 minutes 36 seconds N, 96 degrees 40 minutes 26 seconds W; NAD 83.
RANGE IN CHARACTERISTICS:
Soil moisture - moist within the soil moisture control section (10 to 30 centimeters) from January through April and intermittently moist from May through December. The driest months are July through September.
Mollic epipedon thickness - 50 to 102 centimeters
Organic carbon content - irregular decrease between 25 and 125 centimeters
Combined thickness of the A and B horizons (if present) - 70 to 115 centimeters
Depth to secondary carbonates most commonly between 36 to 75 centimeters but ranges from 0 to 152 centimeters
Depth to redoximorphic features - 75 centimeters or more
Clay content of the particle-size control section (25 to 100 centimeters) - 10 to 18 percent
A horizon:
Value: 4 or 5 dry and 2 or 3 moist
Chroma: 1 or 2
Texture: loam, fine sandy loam, or sandy loam
Reaction: neutral to slightly alkaline.
AC horizon:
Value: 4 or 5 dry and 2 or 3 moist
Chroma: 1 or 2
Texture: loam or fine sandy loam.
Reaction: slightly acid to moderately alkaline.
Bw horizons are present in some pedons that have colors and textures similar to the AC horizon.
C horizon:
Value: 5 to 7 dry and 3 to 5 moist
Chroma: 1 or 2.
Texture: loam, but below 102 centimeters stratified layers of loamy sand, sand, coarse sand, fine sandy loam, very fine sandy loam, clay loam, silt loam, silty clay loam, thin layers with more than 35 percent clay (a clayey substratum phase is recognized), and below 152 centimeters, continuous layers of coarse sand are all within the range of the series.
Redoximorphic features: Few to many, faint or distinct
Reaction: slightly acid to moderately alkaline.
COMPETING SERIES: These are the
Crucitas (tentative),
Haozous (tentative),
Kaskan,
Lamesilla (tentative),
Maseeya (tentative),
Paymaster, and
Payter series.
Crucitas have greater than 15 percent rock fragments in the particle-size control section.
Haozous - have greater than 15 percent rock fragments in the particle-size control section.
Kaskan do not have water saturation at less than 152 centimeters.
Lamesilla and Maseeya have hues of 7.5YR in all horizons.
Paymaster - have greater than 15 percent rock fragments in the particle-size control section.
Payter are on alluvial fans and have slopes of 3 to 15 percent.
GEOGRAPHIC SETTING:
Parent material - loamy alluvium
Landform - flood plains of major streams
Slope - 0 to 2 percent
Mean annual precipitation - 610 to 760 millimeters
Mean annual air temperature - 9 to 11 degrees C.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Cass,
Gibbon, and
Luton soils. Cass - are on similar landscapes and have a mollic epipedon less than 50 centimeters thick.
Gibbon - are slightly lower on the landscape, are in the fine-silty particle-size class, and in the Endoaquolls Great Group.
Luton - are lower on the landscape, are in the fine particle-size class, and in the Endoaquerts Great Group.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class Redoximorphic features indicative of a seasonal zone of saturation or aquic conditions are at 91 to 183 centimeters (moderately well drained).
Runoff low
Saturated hydraulic conductivity - moderate.
USE AND VEGETATION: Most areas are cropped to corn, soybeans, or alfalfa. Some areas are irrigated. The principal irrigated crop is corn.
DISTRIBUTION AND EXTENT:
Physiographic Division:
--Interior Plains
Physiographic Provinces:
--Great Plains
--Central Lowland
Physiographic Sections:
--High Plains
--Western Lake
--Dissected Till Plains
Land Resource Regions:
--Central Great Plains Winter Wheat and Range Region (LRR H)
--Central Feed Grains and Livestock Region (LRR M)
Major Land Resource Areas:
--Central Nebraska Loess Hills (MLRA 71)
--Till Plains (MLRA 102B)
--Loess Uplands (MLRA 102C).
The Janude series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Dodge County, Nebraska, 1975.
REMARKS: These soils were formerly mapped in the Cass series.
Diagnostic horizons and other features recognized in the typical pedons are: Mollic epipedon - 0 to 102 centimeters (Ap, A and AC horizons).
Ustic soil moisture regime.