IDENTIFIERS

Current Taxon Name (Soil Name): WILLACY

OSD

Series Extent

User Site ID: S1997TX489003

User Pedon ID: 97TX489003

Vegetation Plot ID: S1997TX489003

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 98P0180

NCSS Pedon Lab Data NASIS Record ID - 10451

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: 26.3999176

Std. Longitude: -97.7137756

Datum: WGS84

Location Description: From the junction of US 77 and FR 489 go east on FR 489 4.35 miles then 450 feet south into cropland.

State: Texas

County: TX489—Willacy

MLRA: 83D—Lower Rio Grande Plain

Non-MLRA Soil Survey Area: TX489—Willacy County, Texas

7.5 Minute USGS Quad: 26097-D6—San Perlita South, Texas

PEDON

Describers Name: R. Molina, P. Holland, M. Golden, D. Brezina, S. Dunn, A. Stahnke

Current Taxon Kind: miscellaneous area

Pedon Type: not classified to current taxon name

Pedon Purpose: research site

Pedon Record Orgin: Converted from PDP 3.x

Pedon #: 3

Sampled As Information:

Soil Name - WILLACY

Taxonomic Class - Fine-loamy, mixed Udic Argiustolls

PSC - 29 to 79 cm.

Classificaton Date - 12/3/1997

Moisture Class - ustic

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landscape: coastal plain

Landform: coastal plain

Anthropogenic Feature: leveled land

Geomorphic Component Hills: side slope

Hill Slope Profile: backslope

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: low

Drainage Class: well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 12/3/1997 (actual site observation date)

Air Photo ID: A.S. 24

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: wind and water erosion

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
SOBIB SOBIB	Sorghum bicolor ssp. bicolor Sorghum bicolor ssp. bicolor	grain sorghum grain sorghum	— —	— —	— —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
mollic epipedon argillic horizon salic horizon calcic horizon	0—29 29—200 72—150 72—150	—- —- —- —-

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	80	40	9	—	90	700	—	—	23	26	16	—	—	—	—	—	—	—	—

Ap1—0 to 15 centimeters (0.0 to 5.9 inches);, very dark grayish brown (10YR 3/2), moist; fine sandy loam; weak medium subangular blocky parts to weak medium granular structure; friable; 21.0 very fine and fine roots throughout and 3.0 medium roots throughout; 3.0 very fine and fine and 3.0 medium pores; fragments; noneffervescent; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # 98P01138. 20% by volume, irregular, medium and coarse, 10YR 6/4 clean sands.

Ap2—15 to 29 centimeters (5.9 to 11.4 inches);, very dark gray (10YR 3/1), moist; sandy clay loam; weak medium subangular blocky structure; friable; 21.0 very fine and fine roots throughout and 3.0 medium roots throughout; 3.0 very fine and fine and 3.0 medium pores; fragments. Lab sample # 98P01139

Btk1—29 to 48 centimeters (11.4 to 18.9 inches); fragments. Lab sample # 98P01140

Btk2—48 to 72 centimeters (18.9 to 28.3 inches); fragments. Lab sample # 98P01141

Btkz1—72 to 114 centimeters (28.3 to 44.9 inches);, brown (7.5YR 4/4), moist; sandy clay loam; 3 percent strong brown (7.5YR 5/6) fine faint mottles; moderate medium prismatic parts to moderate medium angular blocky structure; friable; 3.0 very fine and fine roots throughout and 3.0 medium roots throughout; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 10 percent faint brown (7.5YR 4/4) clay films on faces of peds; 3 percent fine irregular salt masses throughout and 3 percent fine and medium irregular carbonate masses throughout and 3 percent medium cylindrical worm casts throughout and 3 percent medium spherical carbonate concretions throughout; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 98P01142. 3% by volume, fine and medium, 10YR 6/4, sand lenses along ped faces.; discontinuous - phpvsfiid 201708; discontinuous - phpvsfiid 201708

Btkz2—114 to 150 centimeters (44.9 to 59.1 inches);, brown (7.5YR 4/4), moist; sandy clay loam; moderate medium prismatic parts to moderate medium angular blocky structure; friable; 3.0 very fine and fine roots throughout; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 10 percent faint brown (7.5YR 4/4) clay films on faces of peds; 3 percent fine irregular salt masses throughout and 3 percent fine and medium irregular carbonate masses throughout and 3 percent medium spherical carbonate concretions throughout and 3 percent medium cylindrical worm casts throughout; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 98P01143. discontinuous - phpvsfiid 201709; discontinuous - phpvsfiid 201709

Btkz3—150 to 182 centimeters (59.1 to 71.7 inches);, brown (7.5YR 5/4), moist; sandy clay loam; moderate coarse prismatic parts to moderate coarse subangular blocky structure; friable; 3.0 very fine and fine roots throughout; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 10 percent faint brown (7.5YR 4/4) clay films on faces of peds; 3 percent fine irregular salt masses throughout and 3 percent fine and medium irregular carbonate masses throughout and 3 percent medium spherical carbonate concretions throughout and 3 percent medium cylindrical worm casts throughout; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 98P01144. discontinuous - phpvsfiid 201710; discontinuous - phpvsfiid 201710

Btk—182 to 200 centimeters (71.7 to 78.7 inches);, light brown (7.5YR 6/4), moist; sandy clay loam; weak coarse prismatic parts to moderate coarse subangular blocky structure; friable; 3.0 very fine roots between peds; 21.0 very fine and fine and 21.0 medium and 3.0 coarse pores; 10 percent faint brown (7.5YR 5/4) clay films on faces of peds; 3 percent fine and medium irregular carbonate masses throughout and 3 percent fine and medium spherical carbonate concretions throughout; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog. Lab sample # 98P01145. discontinuous - phpvsfiid 201711; discontinuous - phpvsfiid 201711