LOCATION NADA                    TX

Established Series
WLM-SEB-RM
08/2016

NADA SERIES

The Nada series consists of very deep, moderately well drained, very slowly permeable soils. These soils formed in loamy fluviomarine deposits of the Lissie Formation. Slope ranges from 0 to 1 percent. Mean annual air temperature is about 21.7 degrees C (71 degrees F), and mean annual precipitation is about 1041 mm (41 in).

TAXONOMIC CLASS: Fine-loamy, siliceous, active, hyperthermic Oxyaquic Hapludalfs

TYPICAL PEDON: Nada sandy loam--rangeland. (Colors are for moist soil unless otherwise stated.)

A--0 to 19 cm, (0.0 to 7.5 in); dark grayish brown (10YR 4/2) fine sandy loam, grayish brown (10YR 5/2), dry; weak medium subangular blocky structure; slightly hard, friable; common very fine roots and few fine roots; common very fine dendritic tubular and common fine interstitial pores; 1 percent fine distinct yellowish brown (10YR 5/6) masses of oxidized iron with sharp boundaries lining pores; very strongly acid; abrupt smooth boundary. (10 to 30 cm [4 to 12 in] thick)

Bt1--19 to 27 cm, (7.5 to 10.6 in); dark grayish brown (10YR 4/2) sandy clay loam, grayish brown (10YR 5/2), dry; weak medium subangular blocky structure; very hard, firm; few medium roots and common fine roots; common very fine dendritic tubular and common fine dendritic tubular pores; 5 percent distinct light gray (10YR 7/2) sand coats on all faces of peds and 10 percent faint very dark grayish brown (10YR 3/2) clay films on all faces of peds; 1 percent fine distinct brown (7.5YR 4/4) masses of oxidized iron with sharp boundaries on surfaces along root channels; strongly acid; abrupt smooth boundary. (Combined thickness of the Bt horizons is 173 to 193 cm [68 to 76 in])

Bt2--27 to 46 cm, (10.6 to 18.1 in); very dark grayish brown (10YR 3/2) sandy clay, dark grayish brown (10YR 4/2), dry; moderate coarse prismatic parts to moderate coarse angular blocky structure; very hard, firm; common fine roots; common very fine dendritic tubular and common fine dendritic tubular pores; 5 percent distinct brown (10YR 5/3) sand coats on vertical faces of peds and 10 percent distinct dark grayish brown (10YR 4/2) clay films on all faces of peds and 15 percent distinct pressure faces; 5 percent fine distinct brown (7.5YR 4/4) masses of oxidized iron with sharp boundaries on surfaces along root channels; moderately acid; clear smooth boundary.

Bt3--46 to 68 cm, (18.1 to 26.8 in); 70 percent light brownish gray (10YR 6/2) and 30 percent dark gray (10YR 4/1) sandy clay loam, 70 percent light brownish gray (10YR 6/2) and 30 percent gray (10YR 5/1), dry; moderate medium and coarse prismatic parts to moderate medium angular blocky structure; very hard, firm; common fine roots; common very fine dendritic tubular pores; 2 percent faint very pale brown (10YR 7/3) sand coats on vertical faces of peds and 15 percent distinct dark gray (10YR 4/1) clay films on all faces of peds; slightly acid; gradual wavy boundary.

Bt4--68 to 102 cm, (26.8 to 40.2 in); dark gray (10YR 4/1) sandy clay loam, gray (10YR 6/1), dry; moderate coarse angular blocky and weak medium prismatic structure; very hard, firm; few fine roots; few very fine dendritic tubular pores; 15 percent discontinuous distinct black (10YR 2/1), organic stains on all faces of peds and 15 percent discontinuous distinct dark gray (10YR 4/1) clay films on all faces of peds; 1 percent fine prominent yellowish brown (10YR 5/6) masses of oxidized iron with sharp boundaries lining pores and 2 percent fine distinct light brownish gray (2.5Y 6/2) iron depletions with sharp boundaries in matrix; neutral; gradual wavy boundary.

Bt5--102 to 133 cm, (40.2 to 52.4 in); light brownish gray (2.5Y 6/2) sandy clay loam, light gray (2.5Y 7/2), dry; weak medium prismatic parts to weak coarse angular blocky structure; very hard, firm; few fine roots; few very fine dendritic tubular pores; 2 percent patchy distinct clay films on all faces of peds and 2 percent faint light gray (2.5Y 7/2) sand coats on vertical faces of peds; 2 percent coarse prominent yellowish red (5YR 5/6) masses of oxidized iron with sharp boundaries in matrix and 10 percent medium prominent strong brown (7.5YR 5/6) masses of oxidized iron with sharp boundaries in matrix surrounding redox concentrations; 2 percent fine white (10YR 8/1) salt masses and 1 percent coarse carbonate concretions; slightly alkaline; gradual wavy boundary.

Bt6--133 to 179 cm, (52.4 to 70.5 in); light brownish gray (2.5Y 6/2) sandy clay loam, light gray (2.5Y 7/2), dry; weak coarse prismatic parts to weak coarse angular blocky structure; very hard, firm; few fine roots; few very fine dendritic tubular pores; 2 percent faint light gray (2.5Y 7/2) sand coats on vertical faces of peds and 10 percent distinct organic stains on vertical faces of peds and 15 percent distinct light brownish gray (2.5Y 6/2) clay films on all faces of peds; 4 percent coarse prominent yellowish brown (10YR 5/6) masses of oxidized iron with sharp boundaries in matrix and 8 percent medium prominent yellowish brown (10YR 5/6) masses of oxidized iron with sharp boundaries in matrix; moderately alkaline; gradual wavy boundary.

Bt7--179 to 230 cm, (70.5 to 80 in); light brownish gray (2.5Y 6/2) sandy clay loam, light gray (2.5Y 7/2), dry; weak coarse prismatic parts to weak coarse angular blocky structure; very hard, firm; few very fine roots; few very fine dendritic tubular pores; 5 percent distinct light gray (10YR 7/2) sand coats on vertical faces of peds and 15 percent continuous distinct light gray (2.5Y 7/2) clay films on vertical faces of peds; 5 percent fine distinct black (10YR 2/1) iron-manganese masses with sharp boundaries in matrix; 2 percent fine white (10YR 8/1) salt masses; slightly alkaline;

TYPE LOCATION: Victoria County, Texas; from the intersection of Zac Lentz Parkway and Farm Road 1315 in Victoria, about 1.25 mile north on Farm Road 1315 to private road that is about 0.1 mile south of a sharp left curve in Farm Road 1315; 0.6 mile east on private road; 400 ft west in rangeland; Victoria east USGS Quad sheet; Latitude: 28 degrees 52 minutes 24 seconds N; Longitude: 96 degrees 57 minutes 30 seconds W; WGS84

RANGE IN CHARACTERISTICS:
Solum thickness is more than 203 cm (80 in).
Uncoated sand grains are on the surface of some peds and interfingers of uncoated sand 2 to 4 cm (1 to 1.5 in) long and about 1 cm (0.5 in) wide range from none to a few throughout the argillic horizon and comprise less than 5 percent of the matrix. Most pedons contain a few fine dark concretions and masses.

Crayfish krotovinas: from none to common.
COLE: typically about 0.04 but ranges from 0.02 to 0.08.
Depth to secondary forms of calcium carbonate: more than 76 cm (30 inches).

Particle-size control section (weighted average)
Clay content: 25 to 33 percent

A Horizon
Hue: 10YR
Value: 4 to 6
Chroma: 1 to 3
Texture: sandy loam or fine sandy loam
Redox concentrations: amount-0 to 7 percent, shades-brown or yellow
(redox concentrations with amount of common or many are mostly associated with areas in rice culture)
Reaction: very strongly acid to slightly acid

Bt Horizon
Hue: 10YR or 2.5Y
Value: 3 to 6
Chroma: 1 or 2
Texture: sandy clay loam, clay loam, or sandy clay
Redox concentrations: amount-1 to 25 percent, shades-brown, yellow, or red
Redox depletions: amount-0 to 5 percent, shades-gray
Identifiable secondary carbonate: amount-0 to 5 percent, size- fine to coarse, kind-concretions or masses, location-mostly in lower part of the horizon
Reaction: strongly acid to neutral in Bt1 and Bt2 horizons; neutral to moderately alkaline in lower horizons

BCk Horizon (where present)
Hue: 10YR or 2.5Y
Value: 5 to 7
Chroma: 1 or 2
Texture: sandy clay loam or clay loam
Redox concentrations: amount-0 to 15 percent, shades-yellow, brown or red
Redox depletions: amount-0 to 5 percent, shades-gray
Identifiable secondary carbonate: amount-0 to 10 percent, size-fine to coarse, kind-concretions or masses, location-throughout
Effervescence: none to slight
Reaction: slightly alkaline or moderately alkaline

COMPETING SERIES: There are no series in the same family. Similar soils are the Cyfair (T), Edco, Katy, Morales, Snakecreek, and Wyick series.
Cyfair soils: have aquic conditions
Edco soils: in a fine family
Katy soils: have many coarse red redox concentrations in the lower part of the argillic horizon
Morales soils: have a glossic horizon
Snakecreek soils: has aquic conditions
Wyick soils: in an ustic soil moisture regime

GEOGRAPHIC SETTING:
Parent material: loamy fluviomarine deposits derived from the Lissie Formation
Landscape: coastal plain
Landform: flats
Slope: 0 to 1 percent
Soil Moisture: An udic soil moisture regime. The soil moisture control section is moist in some or all parts for more than 275 days in normal years. July to August are the driest months, while fall and spring months the wettest.
Mean annual soil temperature: 22.2 to 22.8 degrees C (72 to 73 degrees F)
Mean annual air temperature range: 20.6 to 21.7 degrees C (69 to 71 degrees F)
Mean annual precipitation range: 991 to 1143 mm (39 to 45 in)
Precipitation Pattern: Rainfall is fairly uniform throughout the year with slight peaks in the Spring and Fall months
Frost-free period: 280 to 305 days
Elevation: 7.6 to 85 m (25 to 280 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Telferner and Cieno series, and the Fordtran and Garcitas series.
Fordtran and Garcitas soils: have sandy epipedon 50 to 102 cm (20 to 40 in) thick; Garcitas soils are gravelly or very gravelly; Fordtran and Garcitas soils are on stream terraces adjacent to the Nada soils.
Cieno soils: mapped in a complex with the Nada series; in depressions less than an acre to about 20 acres in size.
Telferner soils: are on relict meanderbelt ridges adjacent to the Nada soils.

DRAINAGE AND PERMEABILITY: Moderately well drained. Permeability is very slow. Runoff is high. Water perches on top of the argillic horizon for 1 to 2 weeks after heavy extended rainfall. During wet years planting may be delayed for short periods.

USE AND VEGETATION: Used for rangeland and cropland. The main crop grown is rice. Native vegetation on this prairie soil includes little bluestem, Indiangrass, brownseed paspalum, balsam scale, and Wright's threeawn.

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

DISTRIBUTION AND EXTENT: Gulf Coastal Prairies of Texas; Land Resource Region-T; MLRA 150A (Gulf Coast Prairies); moderately extensive.

SERIES ESTABLISHED: Victoria County, Texas; 1979.

REMARKS: The classification is changed from Typic Albaqualfs to Albaquic Hapludalfs based on the soil moisture study "ISCOM VIII, Classification and Management of Wet Soils, 1990." This soil does not have an aquic moisture regime. A subsequent evaluation of soil moisture data show these soils do not have aquic conditions. The classification is changed to Oxyaquic Hapludalfs due to further analysis on a soil moisture study of these soils.

Diagnostic horizons and features recognized in this pedon are:

Ochric epipedon: 0 to 19 cm (0 to 7.5 in) (A horizon)

Abrupt texture change at: 19 cm (7.5 in) (A/Bt contact)

Argillic horizon: 19 to 203 cm (7.5 to 80 in) (Bt horizons)

Depth to secondary carbonates: 102 cm (40 in) (Bt5)

Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014.

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National Cooperative Soil Survey
U.S.A.