LOCATION JAYHAWKER TX

Established Series
JKW-CLN-RM
09/2015

JAYHAWKER SERIES

The Jayhawker series consists of very deep, poorly drained soils. These nearly level to slightly depressional soils formed in loamy fluviomarine dpoesits of the Lissie Formation of early to mid-Pleistocene age. Slope ranges from 0 to 1 percent. Mean annual temperature is about 19.5 degrees C (67 degrees F), and mean annual precipitation is about 1295 mm (51 in

TAXONOMIC CLASS: Coarse-silty, siliceous, active, thermic Typic Paleaquults

TYPICAL PEDON: Jayhawker silt loam--woodland. (Colors are for moist soil unless otherwise stated.)

A--0 to 15 cm (0 to 6 in); grayish brown (10YR 5/2) silt loam; weak coarse subangular blocky structure; hard, firm; many very fine to medium roots mainly at top of horizon; many fine and medium pores; 20 percent is crayfish krotovinas; few worm casts; 4 percent fine prominent strong brown (7.5YR 5/8 ) and brown ( 7.5YR 4/4) iron concentrations with sharp boundaries in root channels and pores; 1 percent fine prominent reddish yellow (7.5YR 6/6) iron concentrations with diffuse boundaries on surfaces of peds; very strongly acid; clear smooth boundary. (8 to 20 cm [3 to 8 in] thick)

Eg--15 to 51 cm (6 to 20 in); light brownish gray (10YR 6/2) silt loam; moderate coarse prismatic structure parting to weak medium and coarse subangular blocky; slightly hard, friable; common fine and medium roots; common fine and medium pores; 20 percent is crayfish krotovinas filled with pinkish gray (7.5YR 7/2) very fine sand; 12 percent fine and medium prominent strong brown (7.5YR 5/8) iron concentrations with diffuse boundaries on surfaces of peds; 5 percent fine prominent yellowish red (5YR 5/8) iron concentrations with clear boundaries in root channels and in pores; 10 percent of the total volume is brittle; very strongly acid; gradual wavy boundary. (15 to 43 cm [6 to 17 in] thick)

Eg/Btg--51 to 91 cm (20 to 36 in); 70 percent gray (10YR 6/1) silt loam (Eg); 30 percent gray (10YR 6/1)(Btg); moderate coarse prismatic structure parting to moderate medium subangular blocky; hard, firm; common very fine roots in nonbrittle material; common fine and medium pores; 15 percent is crayfish krotovinas filled with pinkish gray (7.5YR 7/2) very fine sand; 1 percent ironstone nodules; 15 percent fine and medium prominent brownish yellow (10YR 6/6) iron concentrations with diffuse boundaries on surfaces of peds in Btg, 5 percent fine and medium prominent yellowish red (5YR 5/8) iron concentrations with clear boundaries on surfaces of peds; the Eg is interfingering of albic material 1.3 to 10 cm (1/2 to 4 in) wide and is a clay depletion resulting from aquic conditions; 35 percent of the total volume is brittle; brittle material is coarse prisms 10 to 36 cm (4 to 14 in) wide; extremely acid; diffuse irregular boundary. (25 to 64 cm [10 to 25 in] thick)

Btg/Eg--91 to 175 cm (36 to 69 in); 70 percent gray (10YR 6/1) silt loam (Btg); 30 percent pinkish gray (7.5YR 7/2)(Eg); moderate coarse prismatic structure parting to moderate medium subangular blocky; very hard, very firm; common fine and medium roots in nonbrittle material; common fine and many medium pores; few faint light brownish gray (10YR 6/2) clay films on surfaces of peds and in pores; 10 percent is crayfish krotovinas filled with pinkish gray (7.5YR 7/2) and white (10YR 8/1) very fine sand and few krotovinas cupped with dark gray (10YR 4/1) clay; 12 percent fine and medium prominent yellowish red (5YR 5/8) iron concentrations with sharp boundaries; 18 percent fine and medium prominent brownish yellow (10YR 6/8) iron concentrations on surfaces of peds; 10 percent fine reddish yellow (7.5YR 6/8) iron concentrations with diffuse boundaries in Btg; the Eg is interfingering of albic material 1.3 to 5 cm (1/2 to 2 in) wide on vertical surfaces of prisms and is a clay depletion resulting from aquic conditions; 40 percent of the total volume is brittle; brittle material is coarse prisms 8 to 36 cm (3 to 14 in) wide; extremely acid; clear wavy boundary. (41 to 132 [16 to 52 in] thick)

Btxg/Eg--175 to 203 cm (69 to 80 in); 80 percent light gray (10YR 7/1) silt loam (Btxg); 20 percent light brownish gray (10YR 6/2)(Eg); strong coarse prismatic structure; extremely hard, extremely firm, brittle; few very fine roots in nonbrittle material; many medium and coarse pores; few faint light brownish gray (10YR 6/2) clay films on horizontal surfaces of prisms in Btxg; few crayfish krotovinas; 15 percent fine and medium prominent brownish yellow (10YR 6/8) redox concentrations with diffuse boundaries; 2 percent fine prominent reddish yellow (7.5YR 6/8) iron concentrations with sharp boundaries; 2 percent fine yellowish red (5YR 5/8) iron concentrations with sharp boundaries on surfaces of peds in Btxg; the Exg is interfingering of albic material 2.5 to 10 cm (1 to 4 in) wide with white (10YR 8/1) very fine sand in interior and is a clay depletion resulting from aquic conditions; 70 percent of the total volume is brittle to very brittle; very strongly acid. (20 to 46 cm [8 to 18 in] thick)

TYPE LOCATION: Hardin County, Texas; from the intersection of Farm Road 1003 and Farm Road 943 in Honey Island; 1.5 miles northwest on Farm Road 943 to forest road; 0.1 mile north, 0.6 mile east, and 0.6 mile north on forest road; 25 feet east in forest. USGS topographic quadrangle: Village Mills; Latitude: 30 degrees, 26 minutes, 32 seconds N; Longitude: 94 degrees, 24 minutes, 36 seconds W; WGS84

RANGE IN CHARACTERISTICS:
Soil Moisture: An aquic soil moisture regime.
Mean annual soil temperature: 20.6 to 21.7 degrees C (69 to 71 degrees F)
Depth to fragipan: 140 to 191 cm (55 to 75 in)
Aluminum saturation: 65 to 90 percent
Particle-size control section (weighted average)
Clay content: 8 to 15 percent
Sand content larger than very fine sand: 5 to 12 percent
CEC/clay ratio: 0.5 to 0.6

A Horizon
Hue: 10YR
Value: 4 or 5
Chroma: 1 or 2
Texture: very fine sandy loam or silt loam
Redox concentrations: amount-2 to 10 percent, shades-yellow or brown
Crayfish bioturbation: 15 to 50 percent
Sodium Adsorption Ratio: 0 to 4
Reaction(pH): extremely acid or very strongly acid (3.5 to 5)
Eg Horizon
Hue: 7.5YR or 10YR
Value: 5 to 7
Chroma: 1 or 2
Texture: very fine sandy loam or silt loam
Redox concentrations: amount-5 to 20 percent, shades-red, yellow or brown
Crayfish bioturbation: 15 to 50 percent
Sodium Adsorption Ratio: 0 to 4
Brittleness: 5 to 20 percent
Reaction(pH): extremely acid or very strongly acid (3.5 to 5)

Eg/Btg Horizon
(Eg part)
Hue: 7.5YR or 10YR
Value: 6 or 7
Chroma: 1 or 2
(Btg part)
Hue: 10YR
Value: 6 or 7
Chroma: 1 or 2
Texture: very fine sandy loam or silt loam
Redox concentrations: amount-15 to 25 percent, shades-red, yellow or brown
Crayfish bioturbation: 10 to 40 percent
Sodium Adsorption Ratio: 0 to 4
Brittleness: 20 to 40 percent
Reaction(pH): extremely acid or very strongly acid (3.5 to 5)

Btg/Eg Horizon
(Btg part)
Hue: 10YR, 2.5Y, or N/
Value: 6
Chroma: 1 or 2
(Eg part)
Hue: 7.5YR or 10YR
Value: 6 or 7
Chroma: 1 to 3
Texture: very fine sandy loam or silt loam
Redox concentrations: amount-15 to 35 percent, shades-red, yellow or brown
Crayfish bioturbation: 1 to 25 percent
Sodium Adsorption Ratio: 0 to 4
Brittleness: 30 to 50 percent
Reaction(pH): extremely acid or very strongly acid (3.5 to 5)

Btxg/Exg Horizon
(Btxg part)
Hue: 10YR, 2.5Y or N/
Value: 6 or 7
Chroma: 1 or 2
Texture: clay loam, loam or silt loam
(Exg part)
Hue: 7.5YR or 10YR
Value: 6 to 8
Chroma: 1 or 2
Texture: very fine sandy loam or silt loam
Redox concentrations: amount-15 to 30 percent, shades-red, yellow or brown
Redox depletions: amount-2 to 8 percent, shades-gray, green or blue
Crayfish bioturbation: 1 to 20 percent
Sodium Adsorption Ratio: 0 to 4
Brittleness: 60 to 80 percent
Reaction(pH): extremely acid or very strongly acid (3.5 to 5)

COMPETING SERIES: There are no series in the same family. Similar soils are Jasco, Mashulaville, Olive, Plank, and Toisnot series.
Jasco soils: have a fragipan starting at 38 to 76 cm (15 to 30 in) below the surface; have more than 35 pecent base saturation
Mashulaville, Olive, and Toisnot soils: have a coarse-loamy particle-size control section.
Plank soils: do not have a fragipan; have more than 35 percent base saturation

GEOGRAPHIC SETTING:
Parent material: early to mid Pleistocene age loamy fluviomarine deposits derived from igneous, metamorphic and sedimentary rock
Landscape: coastal plains
Landform: open depressions
Slope: 0 to 1 percent
Mean annual precipitation: 1219 to 1473 mm (48 to 58 in)
Precipitation Pattern: Rainfall is fairly uniform throughout the year with slight peaks in the spring and fall months.
Mean annual air temperature: 19.5 to 20.6 degrees C (67 to 69 degrees F)
Frost-free period: 240 to 300 days
Elevation: 22.9 to 46 m (75 to 150 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dallardsville, Kountze, Plank, Sorter, and Waller soils.
Dallardsville soils: better drained; on mounds
Kountze soils: better drained; on a higher landform
Plank soils: on a slightly higher landform
Sorter and Waller soils: have more than 15 percent sands larger than very fine sand; on a slightly higher landform

DRAINAGE AND PERMEABILITY: poorly drained. Permeability is very slow. Runoff is negligible. These soils are for frequently ponded for long periods from November to May. These soils have aquic conditions in normal years.

USE AND VEGETATION: Used primarily for woodland and wildlife habitat. Native vegetation is slash and loblolly pine, black gum, red maple, water oak, sedges, panicums and paspalums.

DISTRIBUTION AND EXTENT: Southeast Texas; Land Resource Region T; MLRA 152B; the series is of moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Hardin County, Texas; 1998.

REMARKS: The Jayhawker soils were previously included with the Sorter and Waller series.

Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon: 0 to 15 cm (0 to 6 in) (A horizon)

Albic horizon: 15 to 91 cm (6 to 36 in) (Eg and Eg/Btg horizons)

Glossic horizon: 51 to 203 cm (20 to 80 in) (Eg/Btg, Btg/Eg, and Exg/Btxg horizons. The glossic horizon is series criteria but not diagostic for classification.)

Fragipan: 175 to 203 cm (69 to 80 in) (Exg/Btxg horizon. The fragipan is series criteria but not diagnostic for classification)

Argillic horizon: 91 to 175 (36 to 69 in) (Btg/Eg horizon)

Aquic feature--This soil is saturated to the surface from late November to the end of May, has aquic conditions in most years, and has redoximorphic features with chroma of 2 or less.

ADDITIONAL DATA: Data are available from Texas A&M University Soil Characterization Lab on sample (S95TX-199-009).

Taxonomic Version: Keys to Soil Taxonomy, Eleventh Edition, 2010

National Cooperative Soil Survey
U.S.A.