IDENTIFIERS

Current Taxon Name (Soil Name): Aquic Hapludalfs

OSD

Series Extent

User Site ID: S11TX2897009

User Pedon ID: S11TX2897009

Vegetation Plot ID: S11TX2897009

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - TAMU

Lab Pedon # - S11TX2897009

NCSS Pedon Lab Data NASIS Record ID - 45623

Print Date: 11/21/2024

LOCATION

Location In Web Soil Survey

AOI is roughly a square mile and pedon is marked in the center.

Location in SoilWeb

Location in Google Maps

Std. Latitude: 31.4133892

Std. Longitude: -95.7311020

Datum: WGS84

State: Texas

County: TX289—Leon

MLRA: 87A—Texas Claypan Area, Southern Part

Non-MLRA Soil Survey Area: TX289—Leon County, Texas

7.5 Minute USGS Quad: 31095-D6—Stanmire Lake, Texas

PEDON

Describers Name: C.T. Hallmark and Chance Robinson

Current Taxonomic Class: Fine-loamy, siliceous, active, thermic Aquic Hapludalfs

Current Taxon Kind: family

Pedon Type: not classified to current taxon name

Pedon Purpose: research site

Correlated Information:

Soil Name - Aquic Hapludalfs

PSC - 55 to 105 cm.

Classificaton Date - 7/12/2013

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - aquic

Sampled As Information:

Soil Name - Derly

Classificaton Date - 5/12/2011

Dynamic Soil Properties:

Erosion Class - 0

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: alluvium

Landscape: river valley

Landform: stream terrace

Microfeature: swale

Geomorphic Component Terraces: tread

Slope Shape Across: linear

Slope Shape Down: convex

Drainage Class: poorly

Geology: Qal formation.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 5/12/2011 (actual site observation date)

Surface Water Kind: none observed

Microrelief Kind: microlow

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - pastureland, tame

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Current Weather - rain

Current Air Temp - 25

Pedon Horizon Lab Results - 1
Horizon	Top Depth	Bottom Depth	Sample ID	Data Collector	Total Clay	CaCO3 Clay	Total Silt	Fine Silt	Co. Silt	Total Sand	Total Sand Method	VC Sand	Co. Sand	Med. Sand	Fine Sand	VF Sand	VF Sand Method	Texture Class - Field Lab	Rubbed Fiber	Unrubbed Fiber	pH H2O
	cm	cm			%	%	%	%	%	%		%	%	%	%	%			%	%
Ap A AB Bt Btg B't B'tg BCtg CBg Cg1 Cg2	0 16 36 55 76 100 118 141 173 201 226	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	0 0.1 0 0 0 0 0 0 0 0 0	0.2 0.1 0.1 0 0.1 0 0 0 0 0 0	1 0.8 0.5 0.4 0.5 0.4 0.5 0.5 0.6 0.7 0.2	36.3 36.4 35.4 33.3 36.9 35.3 36.5 41.6 43.7 64.5 55.4	17.9 18.6 18.8 18.5 17.5 16.6 15.4 18.3 23.7 19.7 31.8	300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —

Pedon Horizon Lab Results - 2
Horizon	Top Depth	Bottom Depth	Sample ID	pH CaCl2	pH NaF	pH Ox	Delta pH	LL	PL	PI	Atter. Samp. Cond.	COLE	Pot. Acidity	Ca + Mg - Meh 2	K	Ca + Mg - Sat. Paste	KCl Extract. Acidity	Base Sat. - Meh 2	CEC-7	CEC-8.2
	cm	cm						%	%	%		cm/cm	meq/100g	cmol(+)/kg	cmol(+)/kg	mmol(+)/l	cmol(+)/kg	%	cmol(+)/kg	cmol(+)/kg
Ap A AB Bt Btg B't B'tg BCtg CBg Cg1 Cg2	0 16 36 55 76 100 118 141 173 201 226	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —		— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —

Pedon Horizon Lab Results - 3
Horizon	Top Depth	Bottom Depth	Sample ID	ECEC	Phosphate P	NO3-N	EC	EC Method	EC 1:5 by volume	CaCO3 Equiv.	Equiv. Gypsum	Na	SAR	Gypsum Req.	Humic Color	Fulvic Color	Humic + Fulvic Color	Al	PI	Pyro. Hue	PyrO. Value	Pyro. Chroma
	cm	cm		cmol(+)/kg	mg/kg	mg/kg	dS/m		dS/m	%	%	mmol(+)/l	%	L-pcu/g	L-pcu/g	L-pcu/g	%
Ap A AB Bt Btg B't B'tg BCtg CBg Cg1 Cg2	0 16 36 55 76 100 118 141 173 201 226	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —	— — — — — — — — — — —

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
CAREX SEPA10	Carex Setaria parviflora	sedge marsh bristlegrass	— —	— —	— —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon redox concentrations aquic conditions redox depletions with chroma 2 or less redox concentrations argillic horizon redox depletions with chroma 2 or less reduced matrix redox concentrations	0—55 0—16 0—239 16—36 36—100 55—173 55—141 76—239 118—239	—- —- —- —- —- —- —- —- —-

Setting and Climate
Slope	Slope Length USLE	Upslope Length	Elev.	Corr. Elev	Aspect	MAP	REAP	FFD	MAAT	MSAT	MWAT	MAST	MSST	MWST	MFFP	PE Index	Climate Station ID	Climate Station Name	Climate Station Type
%	m				degrees	mm	mm		C						mm
0.1	450	210	59.5	—	207	1094	—	239	18.6	27.2	10.9	—	—	—	—	—	411596	Centerville, Texas	COOP A

Ap—0 to 16 centimeters (0.0 to 6.3 inches); brown (10YR 4/3) sandy clay loam; 55 percent sand; 22 percent silt; 23 percent clay; moderate medium angular blocky structure; firm; 0.3 very fine roots and 0.5 fine roots; 10 percent yellowish red (5YR 5/6), moist, masses of oxidized iron and 25 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.4, pH meter; clear smooth boundary. Lab sample # TAMUE3963; dry when described; observed in push tube

A—16 to 36 centimeters (6.3 to 14.2 inches); dark grayish brown (10YR 4/2) sandy clay loam; 56 percent sand; 22 percent silt; 22 percent clay; moderate medium angular blocky structure; firm; 0.3 very fine roots and 0.3 fine roots; 5 percent faint grayish brown (10YR 5/2), moist, iron depletions; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.4, pH meter; gradual smooth boundary. Lab sample # TAMUE3964; dry when described; observed in push tube

AB—36 to 55 centimeters (14.2 to 21.7 inches); grayish brown (10YR 5/2) sandy clay loam; 55 percent sand; 22 percent silt; 24 percent clay; moderate medium subangular blocky structure; firm; 0.3 fine roots; 1 percent black (10YR 2/1), moist, iron-manganese masses and 30 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.5, pH meter; clear smooth boundary. Lab sample # TAMUE3965; dry when described; observed in push tube

Bt—55 to 76 centimeters (21.7 to 29.9 inches); brown (10YR 4/3) sandy clay loam; 52 percent sand; 19 percent silt; 29 percent clay; moderate medium angular blocky, and moderate fine angular blocky structure; very firm; 0.2 fine roots between peds; distinct brown (10YR 4/3), moist, clay films on vertical faces of peds; 4 percent grayish brown (10YR 5/2), moist, iron depletions and 25 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.4, pH meter; gradual smooth boundary. Lab sample # TAMUE3966; moist when described; observed in push tube. continuous - phpvsfiid 725817; continuous - phpvsfiid 725817

Btg—76 to 100 centimeters (29.9 to 39.4 inches); grayish brown (10YR 5/2) sandy clay loam; 55 percent sand; 17 percent silt; 28 percent clay; moderate medium angular blocky structure; firm; 0.1 fine roots between peds; distinct brown (10YR 4/3), moist, clay films on vertical faces of peds and grayish brown (10YR 5/2), moist, sand coats on vertical faces of peds; 3 percent gray (10YR 6/1), moist, iron depletions and 20 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.1, pH meter; gradual smooth boundary. Lab sample # TAMUE3967; moist when described; observed in push tube. patchy - phpvsfiid 725818; patchy - phpvsfiid 725818

B't—100 to 118 centimeters (39.4 to 46.5 inches); red (2.5YR 5/6) sandy clay loam; 52 percent sand; 16 percent silt; 32 percent clay; moderate medium angular blocky structure; very firm; 0.1 fine roots between peds; distinct grayish brown (10YR 5/2), moist, clay films on vertical faces of peds and grayish brown (10YR 5/2), moist, sand coats on vertical faces of peds; 20 percent light brownish gray (2.5Y 6/2), moist, iron depletions; fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.9, pH meter; gradual smooth boundary. Lab sample # TAMUE3968; moist when described; observed in push tube. continuous - phpvsfiid 725820; continuous - phpvsfiid 725820

B'tg—118 to 141 centimeters (46.5 to 55.5 inches); grayish brown (2.5Y 5/2) sandy clay loam; 52 percent sand; 17 percent silt; 30 percent clay; moderate medium angular blocky structure; firm; 0.1 fine roots between peds; distinct grayish brown (10YR 5/2), moist, clay films on vertical faces of peds; 1 percent black (10YR 2/1), moist, iron-manganese masses and 2 percent light brownish gray (2.5Y 6/2), moist, iron depletions and 20 percent medium prominent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.9, pH meter; gradual smooth boundary. Lab sample # TAMUE3969; moist when described; observed in push tube. continuous - phpvsfiid 725822; continuous - phpvsfiid 725822

BCtg—141 to 173 centimeters (55.5 to 68.1 inches); light brownish gray (10YR 6/2) sandy clay loam; 60 percent sand; 16 percent silt; 24 percent clay; weak medium subangular blocky structure; firm; 0.1 fine roots between peds; distinct grayish brown (10YR 5/2), moist, clay films on vertical faces of peds; 10 percent medium yellowish brown (10YR 5/6), moist, masses of oxidized iron in matrix and 10 percent coarse yellowish brown (10YR 5/6), moist, masses of oxidized iron in matrix; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.2, pH meter; gradual smooth boundary. Lab sample # TAMUE3970; moist when described; observed in push tube. discontinuous - phpvsfiid 725823; discontinuous - phpvsfiid 725823

CBg—173 to 201 centimeters (68.1 to 79.1 inches); light brownish gray (10YR 6/2) fine sandy loam; 68 percent sand; 13 percent silt; 19 percent clay; weak coarse subangular blocky structure; friable; 1 percent black (10YR 2/1), moist, iron-manganese masses and 5 percent light olive brown (2.5Y 5/3), moist, iron-manganese masses and 10 percent medium yellowish brown (10YR 5/6), moist, masses of oxidized iron in matrix and 10 percent coarse yellowish brown (10YR 5/6), moist, masses of oxidized iron in matrix; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.3, pH meter; gradual smooth boundary. Lab sample # TAMUE3971; moist when described; observed in push tube

Cg1—201 to 226 centimeters (79.1 to 89.0 inches); light brownish gray (10YR 6/2) stratified stratified loamy fine sand; 85 percent sand; 5 percent silt; 10 percent clay; structureless massive; very friable; 5 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; moderately acid, pH 5.7, pH meter; clear smooth boundary. Lab sample # TAMUE3972; wet when described; observed in push tube

Cg2—226 to 239 centimeters (89.0 to 94.1 inches); light gray (10YR 7/2) stratified stratified loamy fine sand; 87 percent sand; 6 percent silt; 6 percent clay; structureless single grain; loose; 5 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.2, pH meter. Lab sample # TAMUE3973; wet when described; observed in push tube