IDENTIFIERS

Current Taxon Name (Soil Name): Thatuna

OSD

Series Extent

User Site ID: S1985WA075013

User Pedon ID: 85WA075013

Vegetation Plot ID: S1985WA075013

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 86P0075

NCSS Pedon Lab Data NASIS Record ID - 57880

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: 47.2252769

Std. Longitude: -117.1102753

Datum: WGS84

Township: 20N

Range: 45E

Section: 22

PLSS Details: 170 feet S and l,300 feet W of NE corner

Location Description: About 1 mi E of Tekoa, WA.

State: Washington

County: WA075—Whitman

MLRA: 9—Palouse and Nez Perce Prairies

PEDON

Describers Name: H. Gentry, R. Engel, A. Busacca, and B. Frazier

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from SSL-CMS data

Pedon #: 13

Sampled As Information:

Soil Name - Thatuna

Taxonomic Class - Fine-silty, mixed Xeric Argialbolls

PSC - 83 to 134 cm.

Classificaton Date - 9/1/1985

Moisture Class - xeric

Dynamic Soil Properties:

Erosion Class - 2

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landscape: hills

Landform: hillside or mountainside

Hill Slope Profile: backslope

Slope Position: middle third

Slope Shape Down: linear

Runoff: medium

Drainage Class: moderately well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 9/1/1985 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

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
FEID ROSA SYAL	Festuca idahoensis Rorippa sarmentosa Symphoricarpos albus	Idaho fescue longrunner common snowberry	— — —	— — —	— — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
mollic epipedon argillic horizon	0—72 83—178	—- —-

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
13	—	—	793	—	45	56	—	—	9	20	-2	10	21	-1	—	—	—	—	—

1Ap1—0 to 10 centimeters (0.0 to 3.9 inches); very dark brown (10YR 2/2) crushed, dark grayish brown (10YR 4/2) crushed, dry; silt loam; weak medium subangular blocky, and moderate fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; 5.5 very fine roots throughout; 5.5 very fine interstitial pores; fragments; moderately acid, pH 6.0, bromthymol blue; abrupt smooth boundary. Lab sample # 86P00431. many very fine roots throughout

1Ap2—10 to 16 centimeters (3.9 to 6.3 inches); very dark brown (10YR 2/2) crushed, dark grayish brown (10YR 4/2) crushed, dry; silt loam; moderate fine platy structure; hard, friable, slightly sticky, slightly plastic; 5.5 very fine roots throughout; 5.5 very fine interstitial pores; fragments; slightly acid, pH 6.2, bromthymol blue; abrupt smooth boundary. Lab sample # 86P00432. Very few fine and very fine irregular bodies of Mt. St. Helen's ash.; many very fine roots throughout

1Ap3—16 to 26 centimeters (6.3 to 10.2 inches); very dark brown (10YR 2/2) crushed, dark grayish brown (10YR 4/2) crushed, dry; silt loam; moderate coarse platy structure; hard, friable, slightly sticky, slightly plastic; 2.5 very fine roots throughout; 5.5 very fine interstitial pores; fragments; slightly acid, pH 6.2, bromthymol blue; abrupt smooth boundary. Lab sample # 86P00433. Few fine and coarse irregular bodies of Mt. St. Helen's ash; pockets of organic material.; common very fine roots throughout

1A—26 to 38 centimeters (10.2 to 15.0 inches); very dark grayish brown (10YR 3/2) crushed, dark grayish brown (10YR 4/2) crushed, dry; silt loam; moderate medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; 2.5 very fine roots throughout and 2.5 roots; 5.5 very fine tubular pores; fragments; neutral, pH 6.8, bromthymol blue; clear wavy boundary. Lab sample # 86P00434. Few coarse vertical pores lined with dark colored surface material.; common very fine roots throughout; common roots

1AB—38 to 54 centimeters (15.0 to 21.3 inches); very dark grayish brown (10YR 3/2) crushed, dark grayish brown (10YR 4/2) crushed, dry; silt loam; moderate medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; 2.5 very fine roots throughout; 5.5 very fine tubular pores; fragments; neutral, pH 7.0, bromthymol blue; clear smooth boundary. Lab sample # 86P00435. Few coarse vertical pores lined with dark colored surface material.; common very fine roots throughout

1Bw—54 to 72 centimeters (21.3 to 28.3 inches); dark brown (10YR 3/3) crushed, brown (10YR 5/3) crushed, dry; silt loam; moderate medium prismatic, and moderate medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; 2.5 very fine roots throughout; 5.5 very fine tubular pores; fragments; neutral, pH 7.0, bromthymol blue; gradual irregular boundary. Lab sample # 86P00436. Few coarse vertical pores lined with dark colored surface material, very few rodent burrows filled with dark colored surface material.; common very fine roots throughout

1E—72 to 83 centimeters (28.3 to 32.7 inches); 75 percent brown (10YR 4/3) interior and 25 percent dark brown (10YR 3/3) interior and brown (10YR 4/3) exterior, 75 percent pale brown (10YR 6/3) interior and 25 percent yellowish brown (10YR 5/4) interior and light brownish gray (10YR 6/2) exterior, dry; silt loam; weak coarse prismatic structure; slightly hard, very friable, slightly sticky, slightly plastic; 2.5 very fine roots throughout; 0.5 very fine and fine vesicular and 5.5 very fine tubular pores; 1 percent spherical iron-manganese concretions; fragments; neutral, pH 7.0, bromthymol blue; abrupt smooth boundary. Lab sample # 86P00437. few very fine iron-manganese concretions concentrations; common very fine roots throughout

1E/B—83 to 92 centimeters (32.7 to 36.2 inches); 60 percent brown (10YR 4/3) interior and 40 percent dark brown (10YR 3/3) interior, 60 percent light brownish gray (10YR 6/2) interior and 40 percent yellowish brown (10YR 5/4) interior, dry; silty clay loam; strong medium prismatic, and strong medium angular blocky structure; very hard, firm, moderately sticky, moderately plastic; 2.5 very fine roots throughout; 5.5 very fine tubular pores; 2 percent faint brown (7.5YR 4/4) clay films in root channels and/or pores; 1 percent fine spherical iron-manganese concretions and 11 percent spherical iron-manganese concretions; fragments; neutral, pH 7.0, bromthymol blue; clear irregular boundary. Lab sample # 86P00438. Top moist and dry color is E material, bottom moist and dry color is B.; common very fine iron-manganese concretions concentrations; few fine iron-manganese concretions concentrations; very few clay films surface features in root channels and/or pores; common very fine roots throughout; patchy - phpvsfiid 219703; patchy - phpvsfiid 219703

1B/E—92 to 117 centimeters (36.2 to 46.1 inches); 85 percent dark brown (10YR 3/3) interior and 15 percent brown (10YR 4/3) interior, 85 percent yellowish brown (10YR 5/4) interior and 15 percent light brownish gray (10YR 6/2) interior, dry; silt loam; strong medium prismatic, and strong medium angular blocky structure; very hard, firm, moderately sticky, moderately plastic; 2.5 very fine roots throughout; 5.5 very fine tubular pores; 2 percent faint black (10YR 2/1) black stains on faces of peds and 15 percent distinct brown (7.5YR 4/4) clay films on faces of peds and 37 percent distinct brown (7.5YR 4/4) clay films in root channels and/or pores; 1 percent fine and medium spherical iron-manganese concretions and 11 percent spherical iron-manganese concretions; fragments; neutral, pH 7.0, bromthymol blue; clear wavy boundary. Lab sample # 86P00439. Top moist and dry colors are B material; bottom moist and dry colors are E material.; common very fine iron-manganese concretions concentrations; few fine and medium iron-manganese concretions concentrations; common clay films surface features in root channels and/or pores; few clay films surface features on faces of peds; very few black stains surface features on faces of peds; common very fine roots throughout; continuous - phpvsfiid 219704; patchy - phpvsfiid 219705; patchy - phpvsfiid 219706; continuous - phpvsfiid 219704; patchy - phpvsfiid 219705; patchy - phpvsfiid 219706

1Bt1—117 to 157 centimeters (46.1 to 61.8 inches); brown (10YR 4/3) crushed, light yellowish brown (10YR 6/4) crushed, dry; silty clay loam; strong medium prismatic, and strong medium angular blocky structure; very hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout; 5.5 very fine tubular pores; 15 percent faint black (10YR 2/1) black stains on faces of peds and 37 percent prominent brown (7.5YR 4/3) clay films in root channels and/or pores and 37 percent prominent brown (7.5YR 4/3) clay films on faces of peds; 1 percent spherical iron-manganese concretions; fragments; neutral, pH 7.0, bromthymol blue; clear wavy boundary. Lab sample # 86P00440. Few pockets and coatings on peds of brownish gray (10YR 6/2).; few very fine iron-manganese concretions concentrations; common clay films surface features in root channels and/or pores; common clay films surface features on faces of peds; few black stains surface features on faces of peds; few very fine roots throughout; discontinuous - phpvsfiid 219708; continuous - phpvsfiid 219707; patchy - phpvsfiid 219709; discontinuous - phpvsfiid 219708; continuous - phpvsfiid 219707; patchy - phpvsfiid 219709

1Bt2—157 to 178 centimeters (61.8 to 70.1 inches); brown (10YR 4/3) crushed, light yellowish brown (10YR 6/4) crushed, dry; silty clay loam; strong medium prismatic, and moderate medium angular blocky structure; 5.5 very fine tubular pores; 2 percent faint black (10YR 2/1) black stains on faces of peds and 15 percent distinct brown (7.5YR 4/4) clay films in root channels and/or pores and 15 percent distinct brown (7.5YR 4/4) clay films on faces of peds; 1 percent spherical iron-manganese concretions; fragments; neutral, pH 7.0, bromthymol blue. Lab sample # 86P00441. few very fine iron-manganese concretions concentrations; few clay films surface features in root channels and/or pores; few clay films surface features on faces of peds; very few black stains surface features on faces of peds; continuous - phpvsfiid 219710; patchy - phpvsfiid 219711; patchy - phpvsfiid 219712; continuous - phpvsfiid 219710; patchy - phpvsfiid 219711; patchy - phpvsfiid 219712