IDENTIFIERS

Current Taxon Name (Soil Name): Raku

OSD

Series Extent

User Site ID: 05CO628000

User Pedon ID: 05CO628000

Transect:

User Transect ID - 67bTCO628233-RcA

Transect Stop Number - 4

Transect Interval - 400.0

Lab Information:

Certified Lab Pedon Description - no

Lab Pedon # - 05N0502

NCSS Pedon Lab Data NASIS Record ID - 17805

Print Date: 6/22/2024

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: 37.2831389

Std. Longitude: -104.3683611

Datum: WGS84

Township: 32 S.

Range: 62 W.

Section: 5

PLSS Details: 2250 feet north and 1750 feet east of the southwest corner

Location Description: 2250 feet north and 1750 feet east of the southwest corner of section 5, T. 32 S., R. 62 W.

Map Unit: RcA—Raku silt clay loam, 0 to 1 percent slopes

State: Colorado

County: CO071—Las Animas

MLRA: 67—Central High Plains

Non-MLRA Soil Survey Area: CO628—Las Animas County Area, Colorado, Parts of Huerfano and Las Animas Counties

7.5 Minute USGS Quad: 37104-C3—Earl, Colorado

PEDON

Describers Name: LAN

Current Taxonomic Class: Fine, smectitic, mesic Aridic Argiustolls

Current Taxon Kind: series

Pedon Type: representative pedon for component

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 952

Sampled As Information:

Soil Name - Raku

Taxonomic Class - Fine, smectitic, mesic Aridic Argiustolls

PSC - 8 to 58 cm.

Classificaton Date - 2/22/2005

Soil Taxonomic Edition - tenth edition

Moisture Class - ustic

Moisture SUBClass - aridic (torric)

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: alluvium derived from sedimentary rock

Landscape: plains

Landform: terrace

Geomorphic Component Terraces: tread

Slope Shape Across: convex

Slope Shape Down: linear

Runoff: low

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 2/22/2005 (actual site observation date)

Air Photo ID: 21-G

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

Site Obs. Cover Kind 2 - hayland

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: wind and water erosion

Pedon Horizon Lab Results - 1
Horizon	Top Depth	Bottom Depth	Sample ID	Data Collector	Total Clay	CaCO3 Clay	Total Silt	Fine Silt	Co. Silt	Total Sand	Total Sand Method	VC Sand	Co. Sand	Med. Sand	Fine Sand	VF Sand	VF Sand Method	Texture Class - Field Lab	Rubbed Fiber	Unrubbed Fiber	pH H2O
	cm	cm			%	%	%	%	%	%		%	%	%	%	%			%	%
Bt2 Bt2 Bt3 Bt3 Btk Btk BCk BCk Bk Bk	28 28 46 46 86 86 104 104 122 122	— 46 — 86 — 104 — 122 — 186	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —

Pedon Horizon Lab Results - 2
Horizon	Top Depth	Bottom Depth	Sample ID	pH CaCl2	pH NaF	pH Ox	Delta pH	LL	PL	PI	Atter. Samp. Cond.	COLE	Pot. Acidity	Ca + Mg - Meh 2	K	Ca + Mg - Sat. Paste	KCl Extract. Acidity	Base Sat. - Meh 2	CEC-7	CEC-8.2
	cm	cm						%	%	%		cm/cm	meq/100g	cmol(+)/kg	cmol(+)/kg	mmol(+)/l	cmol(+)/kg	%	cmol(+)/kg	cmol(+)/kg
Bt2 Bt2 Bt3 Bt3 Btk Btk BCk BCk Bk Bk	28 28 46 46 86 86 104 104 122 122	— 46 — 86 — 104 — 122 — 186	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —		— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —

Pedon Horizon Lab Results - 3
Horizon	Top Depth	Bottom Depth	Sample ID	ECEC	Phosphate P	NO3-N	EC	EC Method	EC 1:5 by volume	CaCO3 Equiv.	Equiv. Gypsum	Na	SAR	Gypsum Req.	Humic Color	Fulvic Color	Humic + Fulvic Color	Al	PI	Pyro. Hue	PyrO. Value	Pyro. Chroma
	cm	cm		cmol(+)/kg	mg/kg	mg/kg	dS/m		dS/m	%	%	mmol(+)/l	%	L-pcu/g	L-pcu/g	L-pcu/g	%
Bt2 Bt2 Bt3 Bt3 Btk Btk BCk BCk Bk Bk	28 28 46 46 86 86 104 104 122 122	— 46 — 86 — 104 — 122 — 186	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	1 1 2 2 4 4 15 15 5 5	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
mollic epipedon argillic horizon calcic horizon	0—28 8—94 104—122	—- —- —-

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
1	—	—	1740	—	350	406	—	—	11.1	—	—	11	—	—	—	—	—	—	—

A—0 to 8 centimeters (0.0 to 3.1 inches); dark grayish brown (10YR 4/2), very dark brown (10YR 2/2), moist; silty clay loam; 34 percent clay; moderate fine granular structure; slightly hard, friable, moderately sticky, slightly plastic; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.6, hellige-truog; abrupt smooth boundary.; moist when described;

Bt1—8 to 28 centimeters (3.1 to 11.0 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; clay; 44 percent clay; moderate fine angular blocky, and moderate medium subangular blocky structure; very hard, very firm, very sticky, very plastic; 40 percent distinct clay films on all faces of peds; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.4, hellige-truog; abrupt smooth boundary.; moist when described;. discontinuous - phpvsfiid 279452; discontinuous - phpvsfiid 279452

Bt2—28 to 46 centimeters (11.0 to 18.1 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2) and dark grayish brown (10YR 4/2) crushed, moist; clay; 48 percent clay; moderate medium prismatic parts to moderate medium subangular blocky structure; extremely hard, very firm, very sticky, very plastic; 40 percent distinct clay films on all faces of peds; fragments; slight effervescence, by hcl, 1n; slightly alkaline, pH 7.5, hellige-truog; clear smooth boundary.; slightly moist when described;. discontinuous - phpvsfiid 279451; discontinuous - phpvsfiid 279451

Bt3—46 to 86 centimeters (18.1 to 33.9 inches); brown (10YR 5/3), brown (10YR 4/3), moist; clay; 47 percent clay; moderate coarse prismatic parts to moderate fine and medium subangular blocky structure; extremely hard, very firm, very sticky, very plastic; 55 percent distinct clay films on all faces of peds; fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.8, hellige-truog; abrupt smooth boundary.; dry when described;. continuous - phpvsfiid 279450; continuous - phpvsfiid 279450

Btk—86 to 104 centimeters (33.9 to 40.9 inches); brown (10YR 5/3), brown (10YR 4/3), moist; clay; 42 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; extremely hard, firm, very sticky, very plastic; 1.0 fine roots; 35 percent distinct clay films on all faces of peds; 12 percent medium and coarse distinct irregular carbonate masses throughout; fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.4, hellige-truog; clear smooth boundary.; dry when described;. discontinuous - phpvsfiid 279449; discontinuous - phpvsfiid 279449

BCk—104 to 122 centimeters (40.9 to 48.0 inches); light brownish gray (10YR 6/2), brown (10YR 4/3), moist; clay loam; 28 percent clay; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 15 percent medium distinct irregular carbonate masses throughout; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.4, hellige-truog; abrupt wavy boundary.; dry when described;. About 15 to 25 percent very fine sand.

Bk—122 to 186 centimeters (48.0 to 73.2 inches); light brownish gray (10YR 6/2), brown (10YR 4/3), moist; silt loam; 24 percent clay; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 5 percent fine distinct irregular carbonate masses throughout; 1 percent by volume nonflat subrounded indurated 2-4-5 millimeter unspecified fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, hellige-truog.; dry when described;. About 15 to 25 percent very fine sand.