IDENTIFIERS

Current Taxon Name (Soil Name): Bonn

OSD

Series Extent

User Site ID: 97LA033005-Bonn

User Pedon ID: 97LA033005

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 97P0456

NCSS Pedon Lab Data NASIS Record ID - 10139

Print Date: 2/2/2025

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: 30.6970692

Std. Longitude: -90.9468842

Datum: WGS84

Township: 4 S.

Range: 3 E.

Section: 18

PLSS Details: 1325 feet north and 950 east of the SW corner

Location Description: 1.25 miles east of State Capitol on U.S. Highway 110, then 13.35 miles northeast on State Highway 67 to Fred, La., then 7.5 miles east on State Highway 64, then 7 miles north on State Highway 409, then 1.66 miles east on Pride-Baywood Road, then 175 feet south of road into pasture along west fenceline.

Map Unit: BoA—Bonn silt, 0 to 1 percent slopes

State: Louisiana

County: LA033—East Baton Rouge

MLRA: 134—Southern Mississippi Valley Loess

Regional Office: 7—Auburn, AL

Non-MLRA Soil Survey Area: LA033—East Baton Rouge Parish, Louisiana

7.5 Minute USGS Quad: 30090-F8—Pride, Louisiana

PEDON

Describers Name: Doug Slabaugh and Charles Guillory

Current Taxonomic Class: Fine-silty, mixed, superactive, thermic Vermic Natraqualfs

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 - Bonn

PSC - 57 to 97 cm.

Classificaton Date - 2/19/2010

Moisture Class - udic

Sampled As Information:

Soil Name - Bonn

Classificaton Date - 4/22/1997

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: Thin Peoria loess deposits

Landscape: upland

Landform: interfluve

Runoff: low

Drainage Class: poorly

Flooding: rare flooding

Geology: Peoria Loess Deposits On Pleistocene Age Terraces formation.

Surface Fragments: 0.00 percent

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 4/22/1997 (actual site observation date)

Microrelief Kind: microdepression

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

Site Erosion Accelerated: water erosion

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon albic horizon natric horizon argillic horizon glossic horizon	0—57 12—57 57—260 57—260 169—260	—- —- —- —- —-

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
0.5	—	—	30	—	150	1600	—	276	19.8	—	—	—	—	—	—	—	LA0549	Baton Rouge WSO AP	—

Ap—0 to 13 centimeters (0.0 to 5.1 inches); black (10YR 2/1) silt; 9 percent sand; 85 percent silt; 7 percent clay; weak fine subangular blocky structure; friable; 10.0 fine and medium roots; 4.0 fine pores; 5 percent prominent light yellowish brown (2.5Y 6/3), moist, silt coats on faces of peds and in pores; fragments; very strongly acid, pH 4.7, pH meter; clear wavy boundary. Lab sample # 97P2702; observed in trench

Eg1—13 to 28 centimeters (5.1 to 11.0 inches); grayish brown (10YR 5/2) silt loam; 8 percent sand; 78 percent silt; 15 percent clay; weak fine subangular blocky structure; friable; 4.0 very fine and fine roots; 4.0 fine pores; 10 percent faint very dark grayish brown (10YR 3/2), moist, and dark grayish brown (10YR 4/2), moist, organic stains on faces of peds; 10 percent fine prominent yellowish brown (10YR 5/6), moist, masses of oxidized iron and 10 percent fine faint light brownish gray (10YR 6/2), moist, iron depletions; fragments; strongly acid, pH 5.3, pH meter; clear irregular boundary. Lab sample # 97P2703; observed in trench

Eg2—28 to 56 centimeters (11.0 to 22.0 inches); light brownish gray (2.5Y 6/2) silt loam; 6 percent sand; 82 percent silt; 12 percent clay; weak fine subangular blocky structure; friable; 4.0 fine roots; 4.0 fine pores; 15 percent fine faint light gray (10YR 7/1), moist, clay depletions between peds and 30 percent fine prominent light olive brown (2.5Y 5/6), moist, masses of oxidized iron between peds; fragments; 70 percent krotovinas (lateral area percent); moderately acid, pH 6.0, pH meter; clear wavy boundary. Lab sample # 97P2704; observed in trench

Btng—56 to 91 centimeters (22.0 to 35.8 inches); light olive gray (5Y 6/2) silt loam; 4 percent sand; 70 percent silt; 25 percent clay; moderate medium columnar parts to moderate medium subangular blocky structure; firm; 4.0 fine roots; 4.0 fine pores; 30 percent clay films on faces of peds and in pores and 52 percent distinct light gray (10YR 7/2), moist, silt coats on faces of peds and in pores; 10 percent fine distinct light olive brown (2.5Y 5/4), moist, masses of oxidized iron and 10 percent fine iron-manganese concretions; fragments; neutral, pH 6.7, pH meter; gradual smooth boundary. Lab sample # 97P2705; observed in trench. discontinuous - phpvsfiid 121189; continuous - phpvsfiid 121188; discontinuous - phpvsfiid 121189; continuous - phpvsfiid 121188

Btcng—91 to 109 centimeters (35.8 to 42.9 inches); light olive gray (5Y 6/2) silt loam; 6 percent sand; 72 percent silt; 22 percent clay; moderate medium columnar parts to weak medium subangular blocky structure; firm; 4.0 fine pores; 5 percent distinct very pale brown (10YR 7/3), moist, silt coats on faces of peds and in pores and 30 percent clay films on faces of peds and in pores; 30 percent fine prominent dark brown (10YR 3/3), moist, iron-manganese masses throughout and 30 percent fine iron-manganese concretions throughout; fragments; neutral, pH 7.1, pH meter; diffuse irregular boundary. Lab sample # 97P2706; observed in trench. discontinuous - phpvsfiid 121190; discontinuous - phpvsfiid 121190

B'tng1—109 to 145 centimeters (42.9 to 57.1 inches); light olive gray (5Y 6/2) silt loam; 6 percent sand; 75 percent silt; 19 percent clay; moderate medium columnar parts to weak medium subangular blocky structure; firm; 4.0 fine pores; 5 percent clay films on faces of peds and in pores and 5 percent distinct very pale brown (10YR 7/3), moist, silt coats on vertical faces of peds; 5 percent fine prominent dark brown (10YR 3/3), moist, iron-manganese masses and 8 percent fine iron-manganese concretions; fragments; neutral, pH 7.3, pH meter; diffuse irregular boundary. Lab sample # 97P2707; observed in trench. patchy - phpvsfiid 121192; patchy - phpvsfiid 121192

B'tng2—145 to 170 centimeters (57.1 to 66.9 inches); light olive gray (5Y 6/2) silt loam; 7 percent sand; 75 percent silt; 18 percent clay; moderate medium columnar parts to weak medium subangular blocky structure; firm; 4.0 fine pores; 5 percent clay films on faces of peds and in pores; 5 percent fine prominent dark brown (10YR 3/3), moist, iron-manganese masses and 5 percent fine iron-manganese concretions; fragments; slightly alkaline, pH 7.5, pH meter; gradual irregular boundary. Lab sample # 97P2708; observed in trench. discontinuous - phpvsfiid 121194; discontinuous - phpvsfiid 121194

2E/Btng1—170 to 198 centimeters (66.9 to 78.0 inches); light brownish gray (10YR 6/2) exterior and light olive brown (2.5Y 5/3) interior silt loam; 7 percent sand; 76 percent silt; 17 percent clay; moderate medium columnar parts to moderate medium subangular blocky structure; very firm; 4.0 fine pores; 5 percent clay films on faces of peds and in pores; 1 percent fine distinct very dark grayish brown (10YR 3/2), moist, iron-manganese masses between peds and 10 percent medium prominent brownish yellow (10YR 6/6), moist, masses of oxidized iron on faces of peds and 30 percent medium distinct very dark grayish brown (10YR 3/2), moist, iron-manganese masses on faces of peds; fragments; slightly alkaline, pH 7.4, pH meter; clear irregular boundary. Lab sample # 97P2709; observed in trench. discontinuous - phpvsfiid 121195; discontinuous - phpvsfiid 121195

2E/Btng2—198 to 229 centimeters (78.0 to 90.2 inches); 70 percent light brownish gray (2.5Y 6/2) exterior and 30 percent light olive brown (2.5Y 5/3) interior silt loam; 8 percent sand; 73 percent silt; 19 percent clay; moderate medium columnar parts to moderate medium subangular blocky structure; very firm; 4.0 fine pores; 5 percent clay films on faces of peds and in pores; 10 percent fine prominent yellowish brown (10YR 5/6), moist, masses of oxidized iron between peds and 10 percent medium prominent very dark grayish brown (10YR 3/2), moist, iron-manganese masses on faces of peds and 25 percent fine prominent yellowish brown (10YR 5/6), moist, masses of oxidized iron on faces of peds; fragments; neutral, pH 7.3, pH meter; clear irregular boundary. Lab sample # 97P2710; observed in trench. discontinuous - phpvsfiid 121196; discontinuous - phpvsfiid 121196

2E/Btng3—229 to 259 centimeters (90.2 to 102.0 inches); 70 percent light brownish gray (2.5Y 6/2) interior and 30 percent light olive brown (2.5Y 5/3) exterior silt loam; 9 percent sand; 67 percent silt; 24 percent clay; moderate medium columnar parts to weak medium subangular blocky structure; very firm; 4.0 fine pores; 10 percent clay films on faces of peds and in pores; 5 percent fine distinct light olive brown (2.5Y 5/4), moist, masses of oxidized iron between peds and 5 percent fine faint gray (10YR 6/1), moist, clay depletions between peds and 10 percent medium prominent very dark grayish brown (10YR 3/2), moist, iron-manganese masses between peds and 30 percent fine prominent dark yellowish brown (10YR 4/6), moist, masses of oxidized iron between peds; fragments; neutral, pH 7.2, pH meter. Lab sample # 97P2711; observed in trench