IDENTIFIERS

Current Taxon Name (Soil Name): Duval

OSD

Series Extent

User Site ID: S1979TX163001

User Pedon ID: 79TX163001

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - KSSL

Lab Pedon # - 79P0329

NCSS Pedon Lab Data NASIS Record ID - 47062

Print Date: 5/19/2024

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: 28.7208328

Std. Longitude: -99.1569443

Datum: WGS84

Location Description: 2.1 km W on FR 140 from US 81 in Pearsal 22.9 km S on HI 35 1.6 km N on access rd 92 meters W on farm trail 38 meters S

State: Texas

County: TX163—Frio

PEDON

Describers Name: Jack W. Stevens, Micheal L. Golden

Current Taxonomic Class: Fine-loamy, siliceous, hyperthermic Aridic Haplustalfs

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from PDP 3.x

Correlated Information:

Soil Name - Duval (flagged as OSD)

PSC - 41 to 91 cm.

Classificaton Date - 2/19/2014

Classifier - Gary Harris

Soil Taxonomic Edition - eleventh edition

Moisture Class - ustic

Moisture Subclass - aridic (torric)

Sampled As Information:

Soil Name - Duval

Taxonomic Class - Fine-loamy, mixed, hyperthermic Aridic Haplustalfs

Taxon Kind - series

Classificaton Date - 7/1/1979

Moisture Class - ustic

Moisture SUBClass - aridic (torric)

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

QC Status: level 1

QA Status: level 1

SITE

Landscape: upland

Landform: upland slope

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 7/1/1979 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

Site Obs. Cover Kind 2 - row crop

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: water erosion

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon	0—41 41—132	—- —-

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
—	—	—	—	—		—	—	—	—	—	—	—	—	—	—	—	—	—	—

Ap—0 to 18 centimeters (0.0 to 7.1 inches); yellowish red (5YR 4/6), dark reddish brown (5YR 3/4), moist; very fine sandy loam; weak fine subangular blocky structure; hard, very friable; few (0.5) fine roots; few (0.7) fine tubular pores; fragments; slightly acid, pH 6.5; abrupt smooth boundary. Lab sample # 79P01714; moist when described;

A—18 to 41 centimeters (7.1 to 16.1 inches); yellowish red (5YR 4/6), dark reddish brown (5YR 3/4), moist; very fine sandy loam; weak fine and medium subangular blocky structure; hard, very friable; few (0.7) fine roots; few (0.7) fine tubular pores; fragments; slightly acid, pH 6.5; clear smooth boundary. Lab sample # 79P01715; dry when described;

Bt1—41 to 56 centimeters (16.1 to 22.0 inches); yellowish red (5YR 4/6), dark reddish brown (5YR 3/4), moist; sandy clay loam; mottles; weak medium prismatic parts to weak fine and medium subangular blocky structure; hard, friable; few (0.7) fine roots; few (0.7) fine tubular pores; clay bridges between sand grains and 3 percent faint clay films on vertical faces of peds; 1 percent fine and medium cylindrical insect casts; fragments; slightly acid, pH 6.1; gradual wavy boundary. Lab sample # 79P01716; dry when described;

Bt2—56 to 86 centimeters (22.0 to 33.9 inches); red (2.5YR 4/6), dark red (2.5YR 3/6), moist; sandy clay loam; weak medium prismatic parts to weak fine and medium subangular blocky structure; hard, friable; few (0.7) fine roots; few (0.7) fine tubular pores; clay bridges between sand grains and 3 percent faint clay films on vertical faces of peds; 1 percent fine and medium cylindrical insect casts; 2 percent by volume 2-10-13 millimeter sandstone, unspecified fragments and 2 percent by volume 2-3-6 millimeter ironstone nodules fragments; neutral, pH 6.8; gradual wavy boundary. Lab sample # 79P01717; dry when described;

Bt3—86 to 112 centimeters (33.9 to 44.1 inches); red (2.5YR 4/8), dark red (2.5YR 3/6), moist; sandy clay loam; weak medium prismatic parts to weak fine and medium subangular blocky structure; hard, friable; very few (0.1) very fine roots; few (0.7) fine tubular pores; clay bridges between sand grains and 3 percent faint clay films on vertical faces of peds; and 1 percent fine and medium cylindrical insect casts; 2 percent by volume 2-3-6 millimeter ironstone nodules fragments and 2 percent by volume 2-8-13 millimeter sandstone, unspecified fragments; neutral, pH 7.3; gradual wavy boundary. Lab sample # 79P01718; dry when described;

Btk—112 to 132 centimeters (44.1 to 52.0 inches); red (2.5YR 5/6), red (2.5YR 4/6), moist; sandy clay loam; weak fine subangular blocky structure; hard, friable; very few (0.1) very fine roots; clay bridges between sand grains; 1 percent carbonate masses and 1 percent carbonate nodules; 2 percent by volume 2-3-13 millimeter ironstone nodules fragments and 7 percent by volume , 10 percent by weight angular 2-8-25 millimeter sandstone, noncalcareous fragments; slightly alkaline, pH 7.5; abrupt wavy boundary. Lab sample # 79P01719; dry when described;

2Crk—132 to 183 centimeters (52.0 to 72.0 inches); white (10YR 8/1), light gray (10YR 7/1), moist; weathered bedrock; 2 percent yellowish brown (10YR 5/4) fine and medium distinct and 2 percent strong brown (7.5YR 5/6) fine and medium distinct and 2 percent reddish yellow (7.5YR 6/6) fine and medium distinct and 2 percent yellowish red (5YR 5/6) fine and medium distinct mottles; weakly cemented by iron; 3 percent fine and medium carbonate masses; fragments; moderately alkaline, pH 7.9. Lab sample # 79P01720; dry when described;