IDENTIFIERS

Current Taxon Name (Soil Name): Aquic Hapludalfs

OSD

Series Extent

User Site ID: S11TX2897014

User Pedon ID: S11TX2897014

Vegetation Plot ID: S11TX2897014

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - TAMU

Lab Pedon # - S11TX2897014

NCSS Pedon Lab Data NASIS Record ID - 45628

Print Date: 12/17/2024

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: 31.1898136

Std. Longitude: -95.7535324

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-B7—Middleton, Texas

PEDON

Describers Name: C.T. Hallmark and Chance Robinson

Current Taxonomic Class: Fine, smectitic, 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 - 18 to 68 cm.

Classificaton Date - 7/12/2013

Classifier - Chance M. Robinson

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - aquic

Sampled As Information:

Soil Name - Derly

Classificaton Date - 5/16/2011

Dynamic Soil Properties:

Erosion Class - 1

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: 5/16/2011 (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 - sunny

Current Air Temp - 29

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
CAREX CYDA DIOLS HOPU LOLIU TRFL2	Carex Cynodon dactylon Dichanthelium oligosanthes var. scribnerianum Hordeum pusillum Lolium Tridens flavus	sedge Bermudagrass Scribner's rosette grass little barley ryegrass purpletop tridens	— — — — — —	— — — — — —	— — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon redox concentrations aquic conditions argillic horizon redox depletions with chroma 2 or less reduced matrix redox depletions with chroma 2 or less secondary carbonates reduced matrix redox depletions with chroma 2 or less secondary carbonates redox depletions with chroma 2 or less	0—18 0—310 0—310 18—244 18—32 32—98 53—180 98—206 180—275 206—244 275—310 275—310	—- —- —- —- —- —- —- —- —- —- —- —-

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
1	240	130	54.2	—	113	1094	—	239	18.6	27.2	10.9	—	—	—	—	—	411596	Centerville, Texas	COOP A

Ap—0 to 18 centimeters (0.0 to 7.1 inches); brown (10YR 5/3), pale brown (10YR 6/3), dry; loam; moderate thick platy parts to moderate medium subangular blocky structure; hard, friable; 2.0 medium roots and 3.0 fine roots; 10 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.2, pH meter; abrupt smooth boundary. Lab sample # TAMUE4036; dry when described; observed in push tube

Bt—18 to 32 centimeters (7.1 to 12.6 inches); brown (10YR 5/3), pale brown (10YR 6/3), dry; clay loam; moderate medium subangular blocky structure; very firm; 1.0 medium roots and 2.0 fine roots; distinct clay films on vertical faces of peds; 2 percent light brownish gray (10YR 6/2), moist, iron depletions and 2 percent brownish yellow (10YR 6/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.8, pH meter; clear smooth boundary. Lab sample # TAMUE4037; dry when described; observed in push tube. patchy - phpvsfiid 725953; patchy - phpvsfiid 725953

Btg1—32 to 53 centimeters (12.6 to 20.9 inches); brownish yellow (10YR 5/2), light brownish gray (10YR 6/2), dry; clay loam; moderate coarse angular blocky structure; very firm; 0.5 medium roots and 1.0 fine roots; distinct clay films on vertical faces of peds; 1 percent light yellowish brown (10YR 6/4), moist, masses of oxidized iron and 1 percent black (10YR 2/1), moist, iron-manganese masses; fragments; noneffervescent, by hcl, 1n; very strongly acid, pH 4.8, pH meter; gradual smooth boundary. Lab sample # TAMUE4038; dry when described; observed in push tube. patchy - phpvsfiid 725954; patchy - phpvsfiid 725954

Btg2—53 to 82 centimeters (20.9 to 32.3 inches); grayish brown (10YR 5/2), light brownish gray (10YR 6/2), dry; clay loam; moderate medium angular blocky structure; very firm; 0.9 fine roots; distinct clay films on vertical faces of peds and distinct pressure faces on top faces of peds and 1 percent distinct light brownish gray (10YR 6/2), moist, skeletans on vertical faces of peds; 1 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron and 5 percent light brownish gray (10YR 6/2), moist, iron depletions and 10 percent black (10YR 2/1), moist, iron-manganese masses; fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.3, pH meter; gradual smooth boundary. Lab sample # TAMUE4039; dry when described; observed in push tube. patchy - phpvsfiid 725955; patchy - phpvsfiid 725956; patchy - phpvsfiid 725957; patchy - phpvsfiid 725955; patchy - phpvsfiid 725956; patchy - phpvsfiid 725957

Btg3—82 to 98 centimeters (32.3 to 38.6 inches); grayish brown (10YR 5/2), light brownish gray (10YR 6/2), dry; clay loam; moderate medium angular blocky structure; very firm; 0.7 fine roots; distinct clay films on vertical faces of peds; 1 percent light brownish gray (10YR 6/2), moist, iron depletions and 1 percent noncoherent cemented black (10YR 2/1), moist, iron-manganese masses and 3 percent light olive brown (2.5Y 5/4), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; neutral, pH 6.8, pH meter; gradual smooth boundary. Lab sample # TAMUE4040; dry when described; observed in push tube. patchy - phpvsfiid 725958; patchy - phpvsfiid 725958

Btk1—98 to 119 centimeters (38.6 to 46.9 inches); brown (10YR 5/3), pale brown (10YR 6/3), dry; clay; moderate medium angular blocky structure; very firm; 0.5 fine roots; distinct clay films on vertical faces of peds; 1 percent black (10YR 2/1), moist, iron-manganese masses and 5 percent grayish brown (10YR 5/2), moist, iron depletions; 2 percent medium carbonate nodules; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.4, pH meter; gradual smooth boundary. Lab sample # TAMUE4041; dry when described; observed in push tube. patchy - phpvsfiid 725959; patchy - phpvsfiid 725959

Btk2—119 to 148 centimeters (46.9 to 58.3 inches); light olive brown (2.5Y 5/3) clay; weak medium angular blocky structure; firm; 0.3 fine roots; distinct clay films on vertical faces of peds and 1 percent distinct light brownish gray (10YR 6/2), moist, skeletans on vertical faces of peds; 1 percent black (10YR 2/1), moist, iron-manganese masses and 2 percent light brownish gray (10YR 6/2), moist, iron depletions and 4 percent light olive brown (2.5Y 5/4), moist, masses of oxidized iron and 5 percent strong brown (7.5YR 5/6), moist, masses of oxidized iron; 2 percent medium carbonate nodules; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.6, pH meter; gradual smooth boundary. Lab sample # TAMUE4042; dry when described; observed in push tube. patchy - phpvsfiid 725960; patchy - phpvsfiid 725961; patchy - phpvsfiid 725960; patchy - phpvsfiid 725961

Btk3—148 to 180 centimeters (58.3 to 70.9 inches); variegated light yellowish brown (2.5Y 6/3) sandy clay loam; weak medium angular blocky structure; firm; distinct clay films on vertical faces of peds; 2 percent black (10YR 2/1), moist, iron-manganese masses and 30 percent pale red (2.5YR 7/2), moist, iron depletions and 30 percent strong brown (7.5YR 5/6), moist, masses of oxidized iron; 1 percent medium carbonate nodules; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.8, pH meter; gradual smooth boundary. Lab sample # TAMUE4043; dry when described; observed in push tube. patchy - phpvsfiid 725962; patchy - phpvsfiid 725962

Btkg—180 to 206 centimeters (70.9 to 81.1 inches); light brownish gray (10YR 6/2) sandy clay loam; weak coarse subangular blocky structure; firm; distinct clay films on vertical faces of peds; 1 percent black (10YR 2/1), moist, iron-manganese masses and 5 percent brown (10YR 5/3), moist, masses of oxidized iron and 40 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; 1 percent medium carbonate nodules; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; gradual smooth boundary. Lab sample # TAMUE4044; dry when described; observed in push tube. discontinuous - phpvsfiid 725963; discontinuous - phpvsfiid 725963

B'tg—206 to 244 centimeters (81.1 to 96.1 inches); light brownish gray (10YR 6/2) sandy clay loam; weak coarse subangular blocky structure; firm; distinct clay films on vertical faces of peds; 2 percent yellowish brown (10YR 5/6), moist, iron depletions and 2 percent black (10YR 2/1), moist, iron-manganese masses and 30 percent light gray (10YR 7/2), moist, masses of oxidized iron; 5 percent medium prominent dendritic weakly coherent cemented black (10YR 2/1), moist, root sheaths with sharp boundaries on vertical faces of peds; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.2, pH meter; clear smooth boundary. Lab sample # TAMUE4045; dry when described; observed in push tube. discontinuous - phpvsfiid 725964; discontinuous - phpvsfiid 725964

Cg—244 to 275 centimeters (96.1 to 108.3 inches); light brownish gray (2.5Y 6/2) stratified stratified fine sandy loam; structureless massive; very friable; 5 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; strongly alkaline, pH 8.5, pH meter; clear smooth boundary. Lab sample # TAMUE4046; dry when described; observed in push tube

Ck—275 to 310 centimeters (108.3 to 122.0 inches); pale brown (10YR 6/3) stratified stratified fine sandy loam; structureless massive; very friable; 5 percent brownish yellow (10YR 6/6), moist, masses of oxidized iron and 20 percent light gray (10YR 7/2), moist, iron depletions; 1 percent medium faint spherical noncoherent cemented carbonate masses with clear boundaries throughout; fragments; noneffervescent, by hcl, 1n; strongly alkaline, pH 8.6, pH meter. Lab sample # TAMUE4047; dry when described; observed in push tube