IDENTIFIERS

Current Taxon Name (Soil Name): Union

OSD

Series Extent

User Site ID: 1987MO161023M

User Pedon ID: 1987MO161023

Vegetation Plot ID: 1987MO161023

Transect:

User Transect ID - T1891

Transect Stop Number - 1

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - MCL

Lab Pedon # - M8716123

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: 38.1160556

Std. Longitude: -91.5869417

Datum: WGS84

Township: T39N

Range: R6W

Section: 9

PLSS Details: 1975 feet W and 2450 feet S of the NE corner

Location Description: 1,975 ft west and 2,450 ft south of the northeast corner of sec. 9, T. 39 N, R. 6 W.

Map Unit: 73136—Union silt loam, 1 to 3 percent slopes

State: Missouri

County: MO161—Phelps

MLRA: 116A—Ozark Highland

Non-MLRA Soil Survey Area: MO161—Phelps County, Missouri

7.5 Minute USGS Quad: 38091-A5—Rosati, Missouri

PEDON

Describers Name: D.S. & K.A.

Current Taxonomic Class: Fine, mixed, active, mesic Oxyaquic Fragiudalfs

Current Taxon Kind: series

Pedon Type: TUD pedon

Pedon Purpose: laboratory sampling site

Pedon Record Orgin: Converted from PDP 3.x

Correlated Information:

Soil Name - Union

PSC - 18 to 66 cm.

Classificaton Date - 11/16/2012

Classifier - J.R. Perkins

Soil Taxonomic Edition - eleventh edition

Moisture Subclass - udic

Sampled As Information:

Soil Name - Lebanon

Taxon Kind - series

PSC - 18 to 66 cm.

Classificaton Date - 7/21/1987

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

SITE

Parent Material: loess over pedisediment over residuum

Landscape: hills

Landform: interfluve

Geomorphic Component Hills: interfluve

Hill Slope Profile: summit

Slope Position: upper third

Slope Complexity: simple

Slope Shape Across: convex

Slope Shape Down: convex

Drainage Class: moderately well

Flooding: none flooding

Geology: Pennsylvanian Undifferentiated formation of the Pennsylvanian Undifferentiated group.

Surface Fragments:

Benchmark Soil?: yes

VEGETATION

SITE OBSERVATION

Observation Date: 7/21/1987 (actual site observation date)

Air Photo ID: E-2

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

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
CARYA LOAR10 QUAL QUST THUJA	Carya Lolium arundinaceum Quercus alba Quercus stellata Thuja	hybrid hickory tall fescue white oak post oak arborvitae	— — — — —	— — — — —	— — — — —

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
abrupt textural change fragipan	noncoherent noncoherent	18 - 18 66 - 99	- 0 - - 33 -

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon abrupt textural change redox depletions with chroma 2 or less lithologic discontinuity lithologic discontinuity	0—18 18—152 18—18 51—99 66—99 99—152	—18— —18— —0— —48— —33— —53—

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
2	—	—	302	—	340	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Ap—0 to 18 centimeters (0.0 to 7.1 inches); dark grayish brown (10YR 4/2), very pale brown (10YR 7/3), dry; silt loam; weak very fine granular structure; very friable; 0.5 fine roots; fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU014422

Bt1—18 to 36 centimeters (7.1 to 14.2 inches); dark yellowish brown (10YR 4/4) silty clay loam; strong very fine subangular blocky structure; firm; few (0.5) medium roots and few (0.5) fine roots; 60 percent prominent clay films on faces of peds; fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU014423

Bt2—36 to 51 centimeters (14.2 to 20.1 inches); brown (7.5YR 4/4) silty clay; 1 percent pale brown (10YR 6/3) fine distinct mottles; strong very fine subangular blocky structure; firm; few (0.5) medium roots and few (0.5) fine roots and few (0.5) coarse roots; 60 percent prominent clay films on faces of peds; fragments; very strongly acid, pH 4.5, hellige-truog; gradual wavy boundary. Lab sample # MU014424

Bt3—51 to 66 centimeters (20.1 to 26.0 inches); yellowish brown (10YR 5/4) silty clay; strong very fine subangular blocky structure; firm; few (0.5) fine roots; 60 percent prominent clay films on faces of peds; 10 percent medium distinct strong brown (7.5YR 5/6), moist, masses of oxidized iron and 10 percent fine faint grayish brown (10YR 5/2), moist, iron depletions and 25 percent medium distinct dark grayish brown (10YR 4/2), moist, iron depletions; 10 percent by volume indurated 2-39-75 millimeter chert fragments; extremely acid, pH 4.4, hellige-truog; gradual wavy boundary. Lab sample # MU014425

2Btx—66 to 99 centimeters (26.0 to 39.0 inches); dark yellowish brown (10YR 4/4) very gravelly silt loam; strong very coarse prismatic parts to weak fine subangular blocky structure; very firm; brittle; few (0.5) fine roots in cracks; skeletans over cutans and 35 percent prominent clay films on faces of peds; 10 percent distinct iron depletions; 55 percent by volume indurated 2-39-75 millimeter chert fragments; very strongly acid, pH 4.6, hellige-truog; gradual wavy boundary. Lab sample # MU014426. The gray seams are from 1 to 2 inches (avg. 1.5 in.) wide. Prizms vary from 5 to 11 inches (8 in. avg.) across. Gray seams are 10YR 6/1 with 7.5YR 4/6 and 5/8 rind colors. 82 percent brittle.

3Bt1—99 to 127 centimeters (39.0 to 50.0 inches); dark red (2.5YR 3/6) gravelly clay; 1 percent yellowish brown (10YR 5/6) fine prominent mottles; strong very fine subangular blocky structure; firm; few (0.5) fine roots; 60 percent prominent clay films on faces of peds; 20 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.8, hellige-truog; diffuse wavy boundary. Lab sample # MU014427

3Bt2—127 to 152 centimeters (50.0 to 59.8 inches); red (2.5YR 4/6) clay; 21 percent yellowish brown (10YR 5/6) coarse prominent mottles; strong very fine subangular blocky structure; firm; few (0.5) fine roots; 60 percent prominent clay films on faces of peds; 5 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU014428