LOCATION PAXICO KS+IL MOEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, calcareous, mesic Aeric Fluvaquents
TYPICAL PEDON: Paxico silt loam - in woodland. (Colors are for moist soil unless otherwise stated.)
A--0 to 9 inches; very dark grayish brown (10YR 3/2) silt loam, light brownish gray (10YR 6/2) dry; few fine stratification of lighter color; weak fine granular structure; slightly hard, friable; common fine roots; slight effervescence; moderately alkaline; clear smooth boundary. (4 to 10 inches thick)
C1--9 to 19 inches; dark grayish brown (10YR 4/2) silt loam, light brownish gray (10YR 6/2) dry; few fine lighter strata colored; common medium distinct dark yellowish brown (10YR 4/6) redoximorphic concentrations; massive; slightly hard, friable; few fine roots; strong effervescence; moderately alkaline; gradual smooth boundary.
C2--19 to 42 inches; very dark grayish brown (10YR 3/2) silt loam, light brownish gray (10YR 6/2) dry; with few medium fine sandy loam strata; common fine distinct dark yellowish brown (10YR 4/6) redoximorphic concentrations; massive; slightly hard, friable; few fine roots; strong effervescence; moderately alkaline; clear smooth boundary. (Combined thickness of C horizons is 26 to 56 inches.)
2C--42 to 60 inches; dark grayish brown (10YR 4/2) loamy fine sand, pale brown (10YR 6/3) dry; thin strata of finer and coarser textured sediments; single grained; loose, loose, nonsticky and nonplastic; few fine roots; strong effervescence; moderately alkaline.
TYPE LOCATION: Pottawatomie County, Kansas; about 1 mile east of Manhattan, Kansas; 780 feet north and 1330 feet east of the southwest corner of sec. 15, T. 10 S., R 8 E; USGS Manhattan Topographic quad; lat. 39 degrees 10 minutes 31 seconds N. and long. 96 degrees 31 minutes 04 seconds W.
RANGE IN CHARACTERISTICS:
Soil moisture: aquic moisture regime
Depth to calcium carbonate: 0 to 10 inches
Depth to redox concentrations: 9 to 42 inches
Depth to sandy underlying material: 40 to more than 60 inches.
Particle-size control section (weighted average):
Clay content: 5 to 18 percent
Sand content: 0 to 50 percent
A horizon:-
Hue: 10YR
Value: 2 to 4 moist and 4 to 6 dry,
Chroma: 1 or 2
Texture: silt loam or very fine sandy loam
Clay content: 5 to 18 percent
Calcium carbonate equivalent: 0 to 5 percent
Reaction: 6.6 to 8.4
C horizon:
Hue: 10YR
Value: 2 to 5 moist and 4 to 7 dry
Chroma: 1 to 2
Texture: silt loam or very fine sandy loam
Clay content: 5 to 18 percent
Calcium carbonate equivalent: 5 to 15 percent
Reaction: 7.8 to 8.4
2C horizon:
Hue: 10YR
Value: 2 to 6 moist and 4 to 7 dry
Chroma: 1 to 3
Texture: loamy fine sand, fine sandy loam, and fine sand. Silty strata less than 6 inches thick occurs in some pedons.
Clay content: 2 to 15 percent
Calcium carbonate equivalent: 5 to 15 percent
Reaction: 7.8 to 8.4
COMPETING SERIES: The Paxico series is the only series in its family, Similar soils in other families are the
Belvue and
Zeandale series.
The Belvue and Zeandale soils do not have water tables.
GEOGRAPHIC SETTING:
Parent material: calcareous coarse silty alluvium
Landform: flood plain
Slopes: 0 to 2 percent
Mean annual temperature: 54 to 57 degrees F
Mean annual precipitation: 28 to 34 inches
Precipitation pattern: udic
Frost-free period: 170 to 190 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Belvue,
Bourbonais,
Eudora,
Kimo, Kiro,
Stonehouse, and
Zeandale soils.
The Belvue and Eudora soils are coarse-silty and are on somewhat higher or similar positions.
The Belvue soils do not have a mollic epipedon.
The Bourbonais soil is coarse-silty over sandy and sits slightly higher on the landscape.
Kimo soils are somewhat poorly drained and are on lower positions on the landscape.
Kiro soils are poorly drained and in depressional areas.
The Stonehouse soil is sandy textured and sits higher on the landscape.
Zeandale soils have carbonates throughout.
DRAINAGE AND PERMEABILITY:
Drainage: Somewhat poorly
Runoff: slow.
Permeability: moderate.
Flooding: frequent
Duration: brief
Months: March to July
Water table: 1.5 to 3 feet.
USE AND VEGETATION: Most areas are in woodland.
DISTRIBUTION AND EXTENT: LRR H, M; MLRA 76, 106; Northeastern Kansas and possibly southeastern Nebraska. Paxico soils are of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Denver, Colorado
SERIES ESTABLISHED: Pottawatomie County, Kansas, 1984.
REMARKS: Features recognized in this pedon are: Aeric Fluvaquents feature - low chroma matrix within 30 inches and irregular decrease in organic matter content.
Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (C1, C2 horizons)
Redoximorphic concentrations: In the zone from 9 to 42 inches. (C1, C2 horizons)
Endosaturation: The zone of saturation at 18 to 36 inches. (C1, C2 horizons)
Converted to semitabular format from narrative.
Changed depth class from deep to very deep.
Recalculated type location distances. Added lat./long.
(BCE, 12/00)