LOCATION NAHATCHE TXEstablished Series
TAXONOMIC CLASS: Fine-loamy, siliceous, active, nonacid, thermic Aeric Fluvaquents
TYPICAL PEDON: Nahatche clay loam--pasture. (Colors are for moist soil unless otherwise stated.)
A--0 to 8 inches brown (10YR 4/3) clay loam; weak fine and medium subangular blocky structure; very hard, firm; few fine roots; few fine faint dark yellowish brown (10YR 4/4) redox concentrations with diffuse boundaries; many wormcasts; moderately acid; clear smooth boundary. (4 to 14 inches thick)
Bg1--8 to 19 inches; dark grayish brown (10YR 4/2) clay loam; moderate very fine subangular blocky structure; hard, friable; few fine roots; few fine pores; common medium faint brown (10YR 5/3) and common medium distinct yellowish brown (10YR 5/6) redox concentrations with diffuse boundaries; few fine iron-manganese concretions; moderately acid; clear smooth boundary.
Bg2--19 to 29 inches; light brownish gray (10YR 6/2) loam; weak medium subangular blocky structure; hard, friable; few fine roots; few fine pores; many coarse distinct brown (7.5YR 4/4) redox concentrations with diffuse boundaries; few fine iron-manganeae concretions; moderately acid; gradual smooth boundary.
Bg3--29 to 49 inches; 35 percent light brownish gray (10YR 6/2), 35 percent gray (10YR 6/1), and 30 percent strong brown (7.5YR 5/6) clay loam; moderate medium subangular blocky structure; hard, friable; few fine roots; few fine pores; few fine iron-manganese concretions; moderately acid; gradual wavy boundary.
Bg4--49 to 59 inches; gray (10YR 6/1) sandy clay loam; weak medium subangular blocky struure; hard, friable; few fine roots; few fine pores; many coarse prominent strong brown (7.5YR 5/6) redox concentrations with clear boundaries; few thin lenses of sandy material; few iron-manganese concretions; moderately acid; clear wavy boundary. (combined Bg subhorizons are 60 to more than 80 inches thick)
Agb--59 to 83 inches; dark gray (10YR 4/1) clay loam; weak coarse blocky structure; extremely hard, very firm; slightly hard; few fine roots; few fine pores; many medium and coarse prominent strong brown (7.5YR 5/6) and yellowish brown (10YR 5/8) redox concentrations with diffuse boundaries; few fine iron-manganese concretions; slightly alkaline.
TYPE LOCATION: Anderson County, Texas; From intersection of Farm Road 319 and State Highway 294 in Elkhart; 1 mile west on State Highway 294; 2.1 miles west on county road; 150 feet north of county road and 20 feet south of Mansons Creek in pasture.
RANGE IN CHARACTERISTICS: The solum is more that 80 inches thick. The weighted average clay content of the particle-size control section ranges from 20 to 30 percent. All or at least one subhorizon in the control section has value of 4 or 5. The reaction ranges from moderately acid to slightly alkaline throughout. Redoximorphic features are considered both contemporary and relic. The soil has aquic soil conditions and redox concentrations at a depth of 16 to 20 inches in most years.
The A horizon has colors in hue of 7.5YR to 10YR, value of 3 to 5, and chroma of 2 or 3. Where the value is 3, the horizon is less than 7 inches thick. Redox depletions in shades of gray range from none to few. Redox concentrations in shades of brown range from few to common in most pedons. The texture is fine sandy loam, loam, clay loam, or silty clay loam.
The Bg or Bgb horizon has hue of 10YR or 2.5Y, value of 4 to 6, and chroma of 1 or 2. Some buried A horizons have value of 3. Redox concentrations in shades of brown or yellow range from few to many and some subhorizons are mixed with these colors. The texture is loam, sandy clay loam, or clay loam. Some pedons have strata or thin subhorizons of fine sandy loam, very fine sandy loam, silt loam, or silty clay loam. Buried horizons below a depth of 30 inches are common.
COMPETING SERIES: There are no competing series, closely similar series include the Dreka, Manco, Mantachie, Mathiston, Mattex and Pophers soils. Dreka, Manco, Mathiston, and Pophers soils have fine-silty control sections. Manco, Mantachie, Mathiston, Mattex, and Pophers soils have an acid reaction classe.
GEOGRAPHIC SETTING: Nahatche soils are on flood plains of streams draining soils of the Southern Coastal Plain. Slope gradients range from 0 to 1 percent. These soils are flooded from one to several times each year for a duration of a few days to about one month in most areas, unless protected. Some areas are rarely flooded or occasionally flooded. They formed in loamy alluvial sediments. Mean annual temperature ranges from 65 to 70 degrees F. and the mean annual precipitation ranges from 40 to 52 inches. Frost free days range from 235 to 270 days and elevation ranges from 100 to 400 feet. The Thornthwaite P-E indices range from 62 to 82.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Hatliff, Gladewater, Iulus, Pluck, Robinsonville, and Thenas soils. Hatliff and Iulus soils have coarse-loamy particle-size control sections. They are on similar or slightly higher flood plain positions. Gladewater soils are clayey throughtout and are in slightly lower flood plain positions. Pluck soils are Typic Fluvaquents and are in lower wetter flood plain positions. Robinsonville and Thenas soils have coarse-loamy control sections and are on similar or slightly higher flood plain positions.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained and moderate permeability. Runoff is negligible. A water table is within 12 to 20 inches of the surface for 1 to 3 months, mainly during the winter and spring months.
USE AND VEGETATION: Most of the soil is used for woodland or pasture. The native vegetation is loblolly pine, shortleaf pine, cypress, American sycamore, water oak, willow oak, cottonwood, sweetgum, southern sweetbay, pecan, and green ash. Herbaceous plants include Virginia wildrye, rusty seed paspalum, beaked panicum, and low panicum. Improved pasture grasses include coastal bermudagrass, and bahiagrass.
DISTRIBUTION AND EXTENT: Southern coastal plain of eastern Texas and possibly Arkansas, Louisiana, Mississippi, and Tennessee. The series is extensive.
MLRA OFFICE RESPONSIBLE: Little Rock, Arkansas
SERIES ESTABLISHED: Anderson County, Texas, 1970.
REMARKS: These soils were previously included in the Iuka series.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the Ap horizon from 0 to 8 inches.
Fluventic feature - irregular distribution of organic carbon in the control section, or 0.2 percent or more organic carbon at a depth of 50 inches below the soil surface.
Aeric feature - value of 4 or 5 and chroma of 2 with redox concentrations in at least one subhorizon in the control section.
ADDITIONAL DATA: NSSL data from type location S80TX-001-1.
SOIL INTERPRETATION RECORD NUMBERS: TX0024; TX1170, SALINE; TX1182, COMMONLY FLOODED