LOCATION JOSBURG NE
Established Series
CJH
06/2022
JOSBURG SERIES
The Josburg series consists of very deep, moderately well drained soils formed in moderately permeable loamy material over slowly permeable, firm alluvial sediments. These soils are on uplands. Slopes typically range from 0 to 2 percent. Mean annual air temperature is about 50 degrees F, and mean annual precipitation is about 21 inches.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Typic Haplustolls
TYPICAL PEDON: Josburg loam with a slope of about 1 percent in a cultivated field. (Colors are for dry soil unless otherwise stated)
Ap--0 to 7 inches; dark gray (10YR 4/1) loam, very dark gray (10YR 3/1) moist; weak fine granular structure; soft, very friable; moderately acid; abrupt smooth boundary.
A--7 to 13 inches; dark grayish brown (10YR 4/2) loam, very dark grayish brown (10YR 3/2) moist; weak medium and fine granular structure; soft, very friable; few fine pebbles; moderately acid; clear smooth boundary. (Combined A horizons 7 to 20 inches thick)
BA--13 to 16 inches; grayish brown (10YR 5/2) loam, dark grayish brown (10YR 4/2) moist; moderate medium and fine subangular blocky structure; slightly hard, friable; 3 percent fine pebbles; slightly acid; clear smooth boundary. (0 to 8 inches thick)
Bw1--16 to 24 inches; brown (10YR 5/3) sandy clay loam, brown (10YR 4/3) moist; weak coarse subangular blocky structure parting to moderate medium subangular blocky; hard, friable; 5 percent fine pebbles; slightly acid; clear smooth boundary. (6 to 12 inches thick)
2Bw2--24 to 32 inches; yellowish brown (10YR 5/4) sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate coarse prismatic structure parting to strong medium angular blocky; very hard, firm; 2 percent fine pebbles; organic matter in cleavages between prisms; slightly acid; clear smooth boundary. (5 to 12 inches thick)
2BC--32 to 42 inches; pale brown (10YR 6/3) sandy clay loam, brown (10YR 5/3) moist; moderate medium and coarse prismatic structure; very hard, firm; organic matter and plant roots in cleavages between prisms; neutral; clear wavy boundary. (0 to 18 inches thick)
2C1--42 to 48 inches; very pale brown (10YR 7/3) sandy clay loam, pale brown (10YR 6/3) moist; many coarse faint light yellowish brown (10YR 6/4) moist redoximorphic concentrations; weak coarse prismatic structure; hard, friable; organic matter and plant roots in cleavages between prisms; few calcium carbonate accumulations; strong effervescence; moderately alkaline; gradual wavy boundary.
2C2--48 to 80 inches; very pale brown (10YR 8/3) fine sandy loam, very pale brown (10YR 7/3) moist; many coarse faint very pale brown (10YR 7/4) moist redoximorphic concentrations; weak coarse prismatic structure; slightly hard, very friable; few calcium carbonate concretions; strong effervescence; moderately alkaline.
TYPE LOCATION: Holt County, Nebraska; about 6 miles north and 7.5 miles west of Oneill; 1,900 feet west and 200 feet north of the southeast corner, sec. 26, T. 30 N., R. 13 W.
RANGE IN CHARACTERISTICS: The thickness of the solum ranges from 36 to 53 inches. The mollic epipedon ranges from 10 to 20 inches thick and may extend into the Bw horizon in some pedons. Depth to the 2Bw horizon ranges from 20 to 40 inches. Carbonates typically are below a depth of 30 inches and many pedons lack free carbonates to a depth of 60 inches. Dark colored soil material and roots are common in cracks and cleavages in the 2Bw and 2BC horizons. Fine pebbles commonly are on the surface and mixed throughout the solum.
The A horizon has value of 4 or 5 and 2 or 3 moist, and chroma of 1 to 3. It is dominantly loam, but the range includes loamy sand, loamy fine sand, fine sandy loam, sandy loam, and silt loam. Reaction is very strongly acid to moderately acid.
The BA horizon has value of 4 or 5 and 3 or 4 moist, and chroma of 2 or 3. It is typically loam or clay loam, but fine sandy loam is within the series range. Reaction is strongly acid to slightly acid.
The Bw horizon has hue of 7.5YR, 10YR or 2.5Y, value of 4 to 6 and 3 to 5 moist, and chroma of 2 to 4. Texture is typically loam, clay loam or sandy clay loam. Clay content in the Bw horizon averages from 17 to 28 percent. Reaction is strongly acid to slightly acid.
The 2Bw horizon has hue of 7.5YR, 10YR or 2.5Y, value of 4 to 6 and 4 or 5 moist, and chroma of 2 to 4. Texture is sandy clay, sandy clay loam, clay loam or loam. The percent clay in the 2Bw horizon ranges from 24 to 40 percent. Reaction is strongly acid to slightly acid.
The 2BC horizon has hue of 7.5YR or 10YR, value of 5 to 7 and 4 to 6 moist, and chroma of 2 or 3. It is sandy clay loam, clay loam or loam. Reaction is moderately acid to neutral.
The 2C horizon has hue of 7.5YR, 10YR or 2.5Y, value of 6 to 8 and 5 to 7 moist, and chroma of 2 to 4. Texture is sandy clay loam, clay loam, loam, fine sandy loam or sandy loam. Redoximorphic concentrations in the soil matrix are faint to prominent brownish, yellowish or reddish, and common or many. Reaction is slightly acid to moderately alkaline. In some places the carbonates occur as small soft, powdery accumulations in a noncalcareous soil matrix.
COMPETING SERIES: These are the
Clarno and
Hand series (it is assumed Clarno series are competing pending an update in the classification). Clarno and Hand soils have lime within 26 inches of the surface. In addition, Clarno soils are formed in glacial till and Hand soils are formed in stratified loamy glacial meltwater sediments.
GEOGRAPHIC SETTING: Josburg soils are on uplands. They are on convex and concave positions in the landscape. Slope gradients are typically less than 2 percent but range from 0 to 9 percent. Josburg soils formed in loamy material deposited over firm alluvial sediments. The mean annual air temperature ranges from 47 to 50 degrees F, and mean annual precipitation ranges from 20 to 24 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Anselmo,
Dunn,
Jansen and
Oneill soils. Anselmo soils are coarse-loamy and slightly higher in the landscape. Dunn soils contain more sand in the upper part and are on similar positions. In addition, Dunn soils have a perched seasonal high water table that ranges from about 1.5 to 3 feet during extended wet periods. Jansen and Oneill soils are underlain with gravelly coarse sand within a depth of 20 to 40 inches. In addition, Oneill soils are coarse-loamy. Oneill and Jansen soils are similar landscapes.
DRAINAGE AND PERMEABILITY: Moderately well drained. Permeability is moderate in the upper part and slow in the lower part of the solum. Runoff is low. These soils have a slowly permeable layer within 1 meter that keeps the soil wet close enough to the surface for long enough periods that planting or harvesting operations may be adversely affected on some low areas during prolonged wet periods.
USE AND VEGETATION: Most of the acreage is cultivated. Some areas are irrigated. Alfalfa, wheat and corn are the principal crops. A few areas are in native grass. Big and little bluestem, sideoats grama and blue grama are the dominant species.
DISTRIBUTION AND EXTENT: On uplands in north-central Nebraska. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Salina, Kansas
SERIES ESTABLISHED: Holt County, Nebraska, 1981.
REMARKS: Diagnostic horizons and other features recognized in this pedon are: mollic epipedon--the zone from 0 to 13 inches (Ap and A horizon).
The 2Bw2 horizon has strong angular blocky structure and an increase in clay (see lab data indicated below), but the clay increase is due to deposition rather than illuviation. However, it may be an argillic horizon if clay films are present.
ADDITIONAL DATA: Lab sample numbers of the Type Location are 79PO336-79PO341. Pedon sample number is S78NE089-006(1-8).
National Cooperative Soil Survey
U.S.A.