LOCATION HUMBARGER KS+NE+OK+TX

Established Series
Rev. RWF/JLG
12/2011

HUMBARGER SERIES

The Humbarger series consists of very deep well drained soils that formed in alluvium. These soils are on flood plains in Central Kansas Sandstone Hills, MLRA 74. Slope ranges from 0 to 2 percent. The mean annual temperature is 13 degrees C (55 degrees F). Mean annual precipitation is 660 millimeters (26 inches) in the type location.

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Cumulic Haplustolls

TYPICAL PEDON: Humbarger clay loam in a cultivated field. (Colors are for dry soil unless otherwise stated.)

Ap--0 to 56 centimeters (0 to 22 inches); dark grayish brown (10YR 4/2) clay loam, very dark grayish brown (10YR 3/2) moist; moderate medium granular structure; slightly hard, friable; few fine roots; many worm casts; slight effervescence; moderately alkaline; gradual smooth boundary. (51 to 76 centimeters (20 to 30 inches) thick)

AC--56 to 76 centimeters (22 to 30 inches); grayish brown (10YR 5/2) clay loam, very dark grayish brown (10YR 3/2) moist; weak fine subangular blocky structure; slightly hard, friable; thin strata of slightly less clayey layers; slight effervescence; moderately alkaline; gradual smooth boundary. (0 to 46 centimeters (0 to 18 inches) thick)

C--76 to 200 centimeters (30 to 79 inches); light brownish gray (10YR 6/2) clay loam, dark grayish brown (10YR 4/2) moist; massive; slightly hard, friable; thin strata of more clayey and less clayey layers; slight effervescence; moderately alkaline.

TYPE LOCATION: Saline County, Kansas; 5 kilometers (3 miles) south and 2 kilometers (1 1/2 miles) east of Salina Post Office; 549 meters (1,800 feet) west and 15 meters (50 feet) north of the southeast corner of sec. 30, T. 14 S., R. 2 W.; USGS Salina, Kansas quadrangle latitude 38 degrees 47 minutes 53.94 seconds north and longitude 97 degrees 34 minutes 56.77 seconds west, NAD 83.

RANGE IN CHARACTERISTICS:
Soil moisture regime: ustic
Soil temperature regime: mesic
Mean annual soil temperature: 11 to 14 degrees C (52 to 57 degrees F)
Mollic epipedon: 50 to 125 centimeters (20 to 49 inches)
Particle size control section (weighted average) clay: 18 to 34 percent
Particle size control section (weighted average) sand: 15 to 60 percent
Depth to free carbonates: less than 38 centimeters (15 inches)
Redoximorphic features: below 50 centimeters (20 inches) in some pedons

Ap or A horizon:
Hue: 10YR or 7.5YR
Value: 4 or 5 dry, 2 or 3 moist
Chroma: 1 to 3
Texture: loam, silt loam, silty clay loam, or clay loam
Clay content: 10 to 35 percent
Sand content: 10 to 50 percent
Reaction: slightly alkaline or moderately alkaline

AC or Bw (when present) horizon:
Hue: 7.5YR to 2.5Y
Value: 4 or 5 dry, 2 or 3 moist
Chroma: 1 to 3
Texture: clay loam, loam, silty clay loam, or sandy loam
Clay content: 10 to 35 percent
Sand content: 10 to 70 percent
Reaction: moderately alkaline

C horizon:
Hue: 7.5YR to 2.5Y
Value: 5 to 7 and 4 to 6 moist
Chroma: 2 to 6
Darker strata: in many pedons
Texture: loam, clay loam, sandy loam, silt loam
Clay content: 1 to 35 percent
Sand content: 20 to 75 percent
Reaction: moderately alkaline
Contrasting sandy or more clayey strata: below 100 centimeters (39 inches) in some pedons
Sand and gravel: below 100 centimeters (39 inches) in some pedons

COMPETING SERIES: These are the Bon, Frazwell, Kaski, Lynx, Manzano, Maskell, Mauricanyon, Merrick, Pack, Shanta, St. Onge, and Umbarg soils.
Bon and St. Onge soils have a lower mean annual temperature.
Frazwell, Lynx, Kaski, Maskell, Mauricanyon, Merrick, and Pack soils lack free carbonates above a depth of 40 centimeters (15 inches).
Manzano soils occur in an ustic bordering on aridic moisture regime.
Shanta soils have 5 to 20 percent rock fragments in the control section.
Umbarg soils water table at a depth of 90 to 150 centimeters (3 to 5 feet) during the months of May and June.

GEOGRAPHIC SETTING:
Landform: flood plains
Slope: 0 to 2 percent
Parent material: alluvium
Mean annual air temperature: 10 to 13 degrees C (50 to 55 degrees F)
Mean annual precipitation: 430 millimeters to 760 millimeters (17 to 30 inches)
Thornthwaites Annual P-E Index: 28 to 54.
Frost-free period: 160 to 210 days

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bridgeport, Cass, Detroit, Hord, McCook, and Roxbury soils.
Bridgeport and Roxbury are on similar landform position and have less than 15 percent fine sand or coarser in the particle size control section (fine-silty).
Cass soils are on similar landform positions and have less than 18 percent clay in the particle size control section (coarse-loamy).
Detroit soils are on higher landform positions and have greater than 35 percent clay in the particle size control section (fine).
Hord soils are on higher landform positions and have less than 15 percent fine sand or coarser in the particle size control section (fine-silty).
McCook soils are on similar landform position and have less than 15 percent fine sand or coarser and less than 18 percent clay in the particle size control section (coarse-silty).

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: well
Runoff: low
Saturated Hydraulic conductivity: moderately high or high
Flooding: occasional or frequent

USE AND VEGETATION: Most areas of Humbarger soils are cultivated.
The principal crops are corn, soybean, grain sorghum, or wheat. Some areas are under irrigation. Native vegetation is tall grasses with scattered deciduous trees along the stream channel.

DISTRIBUTION AND EXTENT: Central and western Kansas, south-central Nebraska, and areas of Texas (LRR H Great Plains Winter Wheat and Range, MLRA 72 Central High Tableland, MLRA 73 Rolling Plains and Breaks, MLRA 74 Central Kansas Sandstone Hills, MLRA 77A Southern High Plains Northern Part) This series are of moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Denver, Colorado

SERIES ESTABLISHED: Saline County, Kansas, 1952.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: 0 to 56 centimeters (0 to 22 inches)(A horizon)

Gravelly substratum phase recognized

Keys to soil Taxonomy: Eleventh edition, 2010

Modified format by LRM in 10/2006 to include metric conversion and change permeability to saturated hydraulic conductivity.

7/2011 JLG
Added soil moisture regime, soil temperature regime, mean annual soil temperature, particle size clay and sand content , depth to redoximorphic features in RIC. Added clay and sand content and reaction to horizon data in RIC. Updated competing series, changed mean annual air temperature to 10 to 13 degrees C from 11 to 14 degrees C, and added frost free days based on climate data. Updated geographically associated soils. Changed precipitation values from centimeters to millimeters.

National Cooperative Soil Survey
U.S.A.