IDENTIFIERS

Current Taxon Name (Soil Name): MEXICO

OSD

Series Extent

User Site ID: 2005MO007009

User Pedon ID: 2005MO007009

Vegetation Plot ID: 2005MO007009

Transect:

User Transect ID - MexPut-24

Transect Stop Number - 1

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - MCL

Lab Pedon # - M0500709

NCSS Pedon Lab Data NASIS Record ID - 25959

Print Date: 2/17/2025

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: 39.1486111

Std. Longitude: -91.7764722

Datum: WGS84

Township: T50N

Range: R8W

Section: 2

PLSS Details: 1,300 feet East and 98 feet South from the North West corner

Country: US—United States

State: Missouri

County: MO007—Audrain

MLRA: 113—Central Claypan Areas

Non-MLRA Soil Survey Area: MO007—Audrain County, Missouri

7.5 Minute USGS Quad: 39091-B7—Mexico East, Missouri

PEDON

Describers Name: John Horton, Grant Butler

Current Taxonomic Class: Fine, smectitic, mesic Vertic Epiaqualfs

Current Taxon Kind: series

Pedon Type: within range of map unit

Pedon Purpose: full pedon description

Pedon Record Orgin: Missouri Pedon

Pedon #: 9

Correlated Information:

Soil Name - MEXICO

PSC - 23 to 74 cm.

Classificaton Date - 2/1/2012

Soil Taxonomic Edition - ninth edition

Moisture Class - aquic

Moisture Subclass - typic

Sampled As Information:

Soil Name - PUTNAM

Classificaton Date - 11/21/2005

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: Holocene Stage silty and clayey loess derived from mixed over Holocene Stage loamy pedisediment derived from igneous, metamorphic and sedimentary rock

Landscape: till plain

Landform: ridge

Geomorphic Component Hills: interfluve

Hill Slope Profile: summit

Slope Position: upper third

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: high

Drainage Class: poorly

Flooding: none flooding

Ponding: none ponding

Geology: Holocene Stage formation.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 11/21/2005 (actual site observation date)

Air Photo ID: 39091b7se

Surface Water Kind: none observed

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 sheet

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
ZEMA	Zea mays	corn	—	—	—

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon reduced matrix aquic conditions lithologic discontinuity	0—23 23—203 23—203 23—203 117—117	—23— —180— —180— —180— —1—

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	—	—	251.8	—	0	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Ap—0 to 23 centimeters (0.0 to 9.1 inches); very dark grayish brown (10YR 3/2) broken face, grayish brown (10YR 5/2) broken face, dry; silt loam; weak fine subangular blocky, and weak medium platy structure; friable; 3.0 very fine roots throughout and 0.5 fine roots throughout; 3.0 very fine tubular and 0.5 fine tubular pores; 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU006188; observed in push tube

Btg1—23 to 41 centimeters (9.1 to 16.1 inches); 80 percent grayish brown (10YR 5/2) broken face and 20 percent light brownish gray (10YR 6/2) broken face silty clay loam; weak fine and medium subangular blocky structure; friable; 3.0 very fine roots throughout and 0.5 fine roots throughout; 3.0 very fine tubular and 0.5 fine tubular pores; 5 percent faint grayish brown (10YR 5/2), moist, clay films on all faces of peds and 10 percent faint silt coats on all faces of peds; 1 percent medium faint irregular noncoherent cemented yellowish brown (10YR 5/8), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; abrupt smooth boundary.; observed in push tube

Btg2—41 to 58 centimeters (16.1 to 22.8 inches); dark grayish brown (10YR 4/2) broken face clay; weak fine subangular blocky, and weak fine and medium prismatic structure; firm; 3.0 very fine roots throughout and 0.5 fine roots throughout; 3.0 very fine tubular pores; 40 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube

Btg3—58 to 81 centimeters (22.8 to 31.9 inches); 30 percent grayish brown (10YR 5/2) broken face and 45 percent dark grayish brown (10YR 4/2) broken face and 25 percent brown (10YR 5/3) broken face silty clay; weak fine subangular blocky, and weak fine and medium prismatic structure; firm; 0.5 very fine roots throughout and 0.5 fine roots throughout; 3.0 very fine tubular pores; 30 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/8), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube

Btg4—81 to 117 centimeters (31.9 to 46.1 inches); 70 percent grayish brown (10YR 5/2) broken face and 30 percent light brownish gray (10YR 6/2) broken face silty clay loam; weak fine and medium subangular blocky, and moderate medium and coarse prismatic structure; firm; 0.5 very fine roots throughout and 0.5 fine roots throughout; 3.0 very fine tubular pores; 5 percent faint silt coats on all faces of peds and 15 percent distinct grayish brown (10YR 5/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/8), moist, iron depletions with clear boundaries in matrix; fragments; abrupt wavy boundary.; observed in push tube

2Btg5—117 to 147 centimeters (46.1 to 57.9 inches); 50 percent grayish brown (10YR 5/2) broken face and 50 percent light brownish gray (10YR 6/2) broken face silty clay loam; weak fine and medium subangular blocky, and moderate medium and coarse prismatic structure; firm; 3.0 very fine tubular and 0.5 fine tubular pores; 10 percent distinct grayish brown (10YR 5/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/8), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube

2Btg6—147 to 203 centimeters (57.9 to 79.9 inches); 60 percent light brownish gray (10YR 6/2) broken face and 40 percent grayish brown (10YR 5/2) broken face silty clay loam; weak medium subangular blocky, and weak coarse prismatic structure; firm; 3.0 very fine tubular and 0.5 fine tubular pores; 5 percent distinct grayish brown (10YR 5/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/8), moist, iron depletions with clear boundaries in matrix; fragments.; observed in push tube