LOCATION IVAN KS

Established Series
Rev. CEW, DJK
03/2016

IVAN SERIES

The Ivan series consists of very deep, well drained soils that formed in calcareous silty alluvium. Ivan soils are on flood plains in the Bluestem Hills, MLRA 76. Slopes range from 0 to 3 percent. Mean annual precipitation is about 910 millimeters (36 inches)and the mean annual temperature is about 13 degrees C (55 degrees F).

TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Cumulic Hapludolls

TYPICAL PEDON: Ivan silt loam on a nearly level flood plain in a cultivated field at an elevation of 356 meters (1165 feet). (Colors are for moist soil unless otherwise stated.)

Ap--0 to 23 centimeters (0 to 9 inches); very dark brown (10YR 2/2) silt loam, dark grayish brown (10YR 4/2) dry; weak fine granular structure; slightly hard, friable, slightly plastic and slightly sticky; many worm casts; moderately alkaline; abrupt, smooth boundary.

A--23 to 43 centimeters (9 to 17 inches); very dark brown (10YR 2/2) silt loam, dark grayish brown (10YR 4/2) dry; moderate medium granular structure; slightly hard, friable, slightly plastic and slightly sticky; many worm casts; slight effervescence; moderately alkaline; gradual smooth boundary. (combined thickness of the A horizons is 30 to 66 centimeters (12 to 26 inches) thick)

AC--43 to 81 centimeters (17 to 32 inches); very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; weak fine granular structure; slightly hard, friable, slightly plastic and slightly sticky; many fine worm holes and casts; thinly stratified with very dark brown (10YR 2/2) lenses of silty clay loam in lower part of horizon; strong effervescence; moderately alkaline; gradual smooth boundary. (0 to 76 centimeters (0 to 30 inches) thick)

C--81 to 183 centimeters (32 to 72 inches); dark grayish brown (10YR 4/2) silt loam, grayish brown (10YR 5/2) dry; massive; hard, friable, slightly plastic and slightly sticky; few lenses of grayish brown (10YR 5/2) loam; strong effervescence; moderately alkaline.

TYPE LOCATION: Chase County, Kansas; about 3 1/4 miles east of Cottonwood Falls; immediately north of road and east of bridge over South Fork Cottonwood River; 1006 meters (3,300 feet) west and 12 meters (40 feet) north of the southeast corner, sec. 25, T. 19 S., R. 8 E. Gladstone, KS USGS quadrangle; latitude 31 degrees 21 minutes 43.8 seconds N. and longitude 96 degrees 28 minutes 35.1 seconds W., WGS 84.

RANGE IN CHARACTERISTICS:

Soil moisture: Udic bordering on ustic.
Mollic epipedon thickness: greater than 61 centimeters (24 inches)
Depth to calcium carbonate: 0 to 25 centimeters (0 to 10 inches)
Mean annual soil temperature: 13 to 14 degrees C (55 to 58 degrees F)

Particle-size control section (weighted average):
Clay content: 18 to 30 percent
Sand content: 0 to 10 percent
Rock fragments: 0 to 5 percent

A or Ap horizon:
Hue: 10YR to 2.5Y
Value: 2 or 3 moist; 4 or 5 dry
Chroma: 1 or 2 moist or dry
Texture: silt loam or silty clay loam
Clay content: 18 to 30 percent
Sand content: 0 to 10 percent
Rock fragments: 0 to 5 percent fine to coarse limestone gravel
Calcium carbonate equivalent: 1 to 10 percent
Reaction: slightly alkaline or moderately akaline

AC horizon:
Hue: 10YR to 2.5Y
Value: 2 or 3 moist; 4 or 5 dry
Chroma: 1 or 2 moist or dry
Texture: silt loam or silty clay loam
Clay content: 18 to 30 percent
Sand content: 0 to 10 percent
Rock fragments: 0 to 5 percent fine to coarse limestone gravel
Calcium carbonate equivalent: 1 to 10 percent
Reaction: moderately alkaline

C horizon:
Hue: 10YR to 2.5Y
Value: 3 to 5 moist; 5 to 7 dry
Chroma: 2 or 3 moist or dry
Texture: loam, silt loam, or silty clay loam
Clay content: 18 to 30 percent
Sand content: 0 to 35 percent
Rock fragments: 0 to 5 percent fine to coarse limestone gravel
Calcium carbonate equivalent: 1 to 10 percent
Reaction: moderately alkaline
Notes: Strata containing more clay or more sand are below a depth of 40 inches in some pedons. Buried A horizons are in some pedons below a depth of 40 inches.

COMPETING SERIES: These are the Allison, Anthon, Huntsville, Judson, Kahola, Kennebec, Kenridge, Lindstrom, Napier, Rossville, Sturkie, and Worthen series. Allison, Anthon, Huntsville, Judson, Kahola, Kennebec, Kenridge, Lindstrom, Napier, Rossville, Sturkie, and Worthen soils have free carbonates at a depth greater than 25 centimeters (10 inches).

GEOGRAPHIC SETTING:
Parent material: calcareous silty alluvium
Landform: flood plains on river valleys
Slopes: 0 to 3 percent
Elevation: 230 to 500 meters (750 to 1640 feet)
Mean annual air temperature: 12 to 14 degrees C (54 to 58 degrees F)
Mean annual precipitation: 790 to 1020 millimeters (31 to 40 inches)
Precipitation pattern: Precipitation is usually evenly distributed throughout the year with the exception of November through February being the driest months and May and June being the wettest months. Summer precipitation occurs during intense summer thunderstorms.
Frost-free period: 170 to 200 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Chase, Clime, Florence, Irwin, Reading, Osage and Tully soils.
Chase and Reading soils are on slightly higher positions. These soils have an argillic horizon.
Clime, Florence, Irwin, and Tully are on adjacent uplands. These soils are more clayey.
Osage soils are in higher positions on the flood plain and are poorly drained.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage: well
Saturated hydraulic conductivity: moderately high
Runoff: low
Flooding: frequent or occasional
Duration: brief or very brief

USE AND VEGETATION: Most areas are cultivated.
The main principal crops are corn and soybeans.
Native vegetation is walnut, sycamore, and bur oak with an under story of tall grasses.

DISTRIBUTION AND EXTENT: East-central Kansas along streams flowing eastward from the Bluestem Hills; Land Resource Region H, Central Great Plains Winter Wheat and Range Region and M, Central Feed Grains and Livestock Region; MLRAs 76, 106, and 112; The series is extensive.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Salina, Kansas

SERIES ESTABLISHED: Riley County, Kansas, 1970.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (A, AC, C horizons)
Mollic epipedon: The zone from 0 to 81 centimeters (0 to 32 inches). (A, AC horizons)
3/90

1. Added "very" and "calcareous, silty" in the first sentence in paragraph 1.
2. Added wet consistence to the typical pedon.
3. Removed solumn thickness from range in characteristic section.
4. Removed all non-competing series from the range paragraph.
5. In geographic setting paragraph changed the mean annual temperature range to 12 to 14 degrees C (54 to 58 degrees F).
6. LRR=H
Converted to semitabular from narrative.
(BCE, 12/00)

10/17/05 JCR LM
Added metric conversion, updated competing series and changed permeability to saturated hydraulic conductivity.

1/2015 DJK Updated climate data in intro and geographic setting. Added Ap horizon to typical pedon from the Chase County TUD which initially had separated the Ap and A horizons. Added mollic thickness, soil temp. sand content, and rock fragments to RIC. Added slightly alkaline to RIC for A. Changed Ksat to moderately high. Updated Distribution and Extent.

National Cooperative Soil Survey
U.S.A.