IDENTIFIERS

Current Taxon Name (Soil Name): Attoyac

OSD

Series Extent

User Site ID: S1987LA085007

User Pedon ID: 87LA085007

Vegetation Plot ID: S1987LA085007

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 87P0701

NCSS Pedon Lab Data NASIS Record ID - 59996

Print Date: 4/22/2025

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: 31.5533333

Std. Longitude: -93.6716690

Datum: WGS84

Township: 7N

Range: 13W

Section: 31

PLSS Details: NE1/4, NW1/4

Location Description: 4.5 mi W of LA Hwy 191, 3 mi S of LA Hwy 3229. 300 feet SE of ned on improved Rd 20 feet E of Woods Rd, North of Toledo State Park.

State: Louisiana

County: LA085—Sabine

MLRA: 133B—Western Coastal Plain

PEDON

Describers Name: Guillory, C. M.

Current Taxonomic Class: Fine-loamy, siliceous, semiactive, thermic Ultic Hapludalfs

Current Taxon Kind: taxadjunct

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from SSL-CMS data

Pedon #: 7

Correlated Information:

Soil Name - Attoyac

PSC - 36 to 86 cm.

Classificaton Date - 12/29/2009

Moisture Class - udic

Sampled As Information:

Soil Name - Ruston

Taxonomic Class - Fine-loamy, siliceous, thermic Typic Paleudult

Taxon Kind - series

Classificaton Date - 8/1/1987

Moisture Class - udic

Dynamic Soil Properties:

Erosion Class - 2

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landscape: coastal plain

Landform: upland slope

Geomorphic Component Hills: interfluve

Hill Slope Profile: summit

Slope Position: upper third

Slope Shape Down: convex

Runoff: medium

Drainage Class: well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 8/1/1987 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - tree cover

Site Obs. Cover Kind 2 - conifers

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: water erosion

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
PITA	Pinus taeda	loblolly pine	—	—	—

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon	0—36 36—206	—- —-

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
3	—	—	70	—	270	123	—	—	17	26	8	18	—	—	—	—	—	165892	—

1A—0 to 23 centimeters (0.0 to 9.1 inches); brown (10YR 4/3) interior fine sandy loam; weak medium granular structure; friable; 5.5 medium roots throughout and 5.5 fine roots; 0.5 fine interstitial pores; fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 87P03750; moist when described;. many fine roots; many medium roots throughout

1E—23 to 36 centimeters (9.1 to 14.2 inches); pale brown (10YR 6/3) interior fine sandy loam; massive; friable; 5.5 medium roots throughout and 5.5 fine roots; 5.5 fine interstitial pores; fragments; strongly acid, pH 5.5, hellige-truog; gradual wavy boundary. Lab sample # 87P03751; moist when described;. Few 1/2 (5YR 5/6) B bodies in lower part.; many fine roots; many medium roots throughout

1B/E—36 to 53 centimeters (14.2 to 20.9 inches); 80 percent yellowish red (5YR 5/6) interior and 20 percent light yellowish brown (10YR 6/4) interior fine sandy loam; weak medium subangular blocky, and structureless massive; firm; 5.5 fine roots throughout; 5.5 fine interstitial pores; 15 percent faint yellowish red (5YR 5/6), moist, clay bridges between sand grains; fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # 87P03752; moist when described;. Few (2.5YR 4/8) sandy clay loam bodies up to 3 cm wide.; few clay bridging surface features between sand grains; many fine roots throughout; patchy - phpvsfiid 232274; patchy - phpvsfiid 232274

1Bt1—53 to 89 centimeters (20.9 to 35.0 inches); red (2.5YR 4/6) interior sandy clay loam; moderate medium subangular blocky structure; firm; 5.5 fine roots throughout; 0.5 fine interstitial pores; 55 percent faint red (2.5YR 4/6), moist, clay films; fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # 87P03753; moist when described;. many clay films surface features; many fine roots throughout; discontinuous - phpvsfiid 232275; discontinuous - phpvsfiid 232275

1Bt2—89 to 114 centimeters (35.0 to 44.9 inches); red (2.5YR 4/6) interior sandy clay loam; moderate medium subangular blocky structure; firm; 0.5 fine roots between peds; 0.5 fine interstitial pores; 55 percent faint red (2.5YR 4/6), moist, clay films; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # 87P03754; moist when described;. Few fine clean sand grains between peds.; many clay films surface features; few fine roots between peds; discontinuous - phpvsfiid 232276; discontinuous - phpvsfiid 232276

1B/Et—114 to 142 centimeters (44.9 to 55.9 inches); 90 percent red (2.5YR 4/8) interior and 10 percent light yellowish brown (10YR 6/4) interior fine sandy loam; moderate coarse prismatic, and moderate medium subangular blocky structure; firm; 0.5 fine roots and 0.5 coarse roots between peds; 0.5 fine interstitial pores; 55 percent faint red (2.5YR 4/6), moist, clay films; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # 87P03755; moist when described;. It was minimumly developed, few fine clean sand grains between peds.; many clay films surface features; few fine roots; few coarse roots between peds; continuous - phpvsfiid 222331; continuous - phpvsfiid 222331

1B't1—142 to 168 centimeters (55.9 to 66.1 inches); red (2.5YR 4/8) interior sandy clay loam; moderate coarse prismatic, and moderate medium subangular blocky structure; hard; 0.5 fine roots between peds; 0.5 fine interstitial pores; 55 percent faint red (2.5YR 4/8) clay films; 1 percent fine irregular ironstone nodules; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # 87P03756; dry when described;. Few fine clean sand grains between peds.; few fine ironstone nodules concentrations; many clay films surface features; few fine roots between peds; continuous - phpvsfiid 222332; continuous - phpvsfiid 222332

1B't2—168 to 188 centimeters (66.1 to 74.0 inches); red (2.5YR 4/8) interior sandy clay loam; 11 percent brownish yellow (10YR 6/6) medium prominent mottles; moderate coarse prismatic, and moderate medium subangular blocky structure; hard; 0.5 medium roots between peds and 0.5 fine roots; 0.5 fine interstitial pores; 37 percent faint red (2.5YR 4/8) clay films; fragments; very strongly acid, pH 4.5, hellige-truog; clear smooth boundary. Lab sample # 87P03757; dry when described;. Many clean sand grains in clay films between peds.; common clay films surface features; few fine roots; few medium roots between peds; common medium prominent 10YR66 mottles; patchy - phpvsfiid 222333; patchy - phpvsfiid 222333

1B't3—188 to 206 centimeters (74.0 to 81.1 inches); red (2.5YR 4/6) interior sandy clay loam; moderate coarse prismatic, and moderate medium subangular blocky structure; hard; 0.5 medium roots between peds and 0.5 fine roots; 0.5 fine interstitial pores; 37 percent faint red (2.5YR 4/8) clay films; fragments; very strongly acid, pH 4.5, hellige-truog. Lab sample # 87P03758; dry when described;. Many clean sand grains in clay films between peds.; common clay films surface features; few fine roots; few medium roots between peds; patchy - phpvsfiid 222334; patchy - phpvsfiid 222334