IDENTIFIERS

Current Taxon Name (Soil Name): Thatuna

OSD

Series Extent

User Site ID: S1985WA075010

User Pedon ID: 85WA075010

Vegetation Plot ID: S1985WA075010

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 86P0072

NCSS Pedon Lab Data NASIS Record ID - 57877

Print Date: 11/24/2024

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: 47.0297203

Std. Longitude: -117.1541672

Datum: WGS84

Township: 18N

Range: 45E

Section: 29

PLSS Details: 1 mile N of Garfield, WA, 2,200 feet S and 2,200 feet W of NE corner

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 #: 10

Sampled As Information:

Soil Name - Thatuna

Taxonomic Class - Fine-silty, mixed Xeric Argialbolls

PSC - 94 to 144 cm.

Classificaton Date - 9/1/1985

Moisture Class - xeric

Dynamic Soil Properties:

Erosion Class - 3

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: high

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—81 94—198	—- —-

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
19	—	—	778	—	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; moderate medium subangular blocky, and moderate fine granular structure; slightly hard, very 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 # 86P00399. many very fine roots throughout

1Ap2—10 to 20 centimeters (3.9 to 7.9 inches); very dark brown (10YR 2/2) crushed, dark grayish brown (10YR 4/2) crushed, dry; silt loam; moderate medium subangular blocky, and moderate fine granular structure; slightly hard, very 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 # 86P00400. Few fine and very fine irregular bodies of Mt. St. Helen's ash.; many very fine roots throughout

1A1—20 to 48 centimeters (7.9 to 18.9 inches); very dark brown (10YR 2/2) crushed, dark grayish brown (10YR 4/2) 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 6.8, bromthymol blue; clear smooth boundary. Lab sample # 86P00401. Few coarse vertical pores.; common very fine roots throughout

1A2—48 to 69 centimeters (18.9 to 27.2 inches); very dark grayish brown (10YR 3/2) crushed, dark grayish brown (10YR 4/2) crushed, dry; silt loam; moderate medium prismatic structure; hard, friable, slightly sticky, slightly plastic; 2.5 very fine roots throughout; 5.5 very fine tubular pores; fragments; neutral, pH 6.8, bromthymol blue; clear smooth boundary. Lab sample # 86P00402. Few coarse vertical pores.; common very fine roots throughout

1AE—69 to 81 centimeters (27.2 to 31.9 inches); 65 percent very dark grayish brown (10YR 3/2) interior and 35 percent dark brown (10YR 3/3) interior, 65 percent pale brown (10YR 6/3) interior and 35 percent light brownish gray (10YR 6/2) interior, dry; silt loam; weak medium prismatic, and weak medium subangular blocky structure; hard, friable; 2.5 very fine roots throughout; 5.5 very fine tubular and 2.5 fine vesicular pores; fragments; neutral, pH 6.8, bromthymol blue; gradual smooth boundary. Lab sample # 86P00403. common very fine roots throughout

1E—81 to 94 centimeters (31.9 to 37.0 inches); dark grayish brown (10YR 4/2) exterior and 90 percent brown (10YR 4/3) interior and 10 percent dark brown (10YR 3/3) interior, light brownish gray (10YR 6/2) exterior and 90 percent pale brown (10YR 6/3) interior and 10 percent yellowish brown (10YR 5/4) interior, dry; silt loam; massive; slightly hard, very friable, slightly sticky, slightly plastic; 0.5 very fine roots throughout; 0.5 very fine vesicular and 5.5 very fine tubular pores; fragments; neutral, pH 6.8, bromthymol blue; abrupt smooth boundary. Lab sample # 86P00404. Clay band about 1.27 cm thick is at lower boundary on top of Bt1 horizon but is about .64 cm above Bt1 horizon in same pedons.; few very fine roots throughout

1Bt1—94 to 114 centimeters (37.0 to 44.9 inches); brown (10YR 4/3) crushed, light yellowish brown (10YR 6/4) crushed, dry; silty clay loam; strong coarse prismatic, and strong medium prismatic structure; very hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots between peds; 5.5 very fine tubular pores; 55 percent prominent dark brown (7.5YR 3/2) clay films on faces of peds and in pores; 1 percent spherical iron-manganese concretions; fragments; neutral, pH 6.8, bromthymol blue; clear irregular boundary. Lab sample # 86P00405. Very few very fine tubular pores in ped exterior.; few very fine iron-manganese concretions concentrations; many clay films surface features on faces of peds and in pores; few very fine roots between peds; continuous - phpvsfiid 219676; continuous - phpvsfiid 219676

1Bt2—114 to 152 centimeters (44.9 to 59.8 inches); brown (10YR 4/3) crushed, light yellowish brown (10YR 6/4) crushed, dry; silty clay loam; strong coarse prismatic, and strong medium prismatic structure; hard, friable, moderately sticky, moderately plastic; 5.5 very fine tubular pores; 15 percent prominent dark brown (7.5YR 3/2) clay films on faces of peds and in pores and 15 percent faint brown (7.5YR 4/3) skeletans over cutans on faces of peds and 37 percent prominent brown (7.5YR 4/3) clay films on faces of peds and in pores; 1 percent spherical iron-manganese concretions; fragments; neutral, pH 6.8, bromthymol blue; gradual smooth boundary. Lab sample # 86P00406. few very fine iron-manganese concretions concentrations; common clay films surface features on faces of peds and in pores; few clay films surface features on faces of peds and in pores; few skeletans over cutans surface features on faces of peds; discontinuous - phpvsfiid 219677; continuous - phpvsfiid 219678; patchy - phpvsfiid 219679; discontinuous - phpvsfiid 219677; continuous - phpvsfiid 219678; patchy - phpvsfiid 219679

1Bt3—152 to 198 centimeters (59.8 to 78.0 inches); brown (10YR 4/3) crushed, light yellowish brown (10YR 6/4) crushed, dry; silt loam; moderate coarse prismatic structure; hard, friable, slightly sticky, slightly plastic; 5.5 very fine tubular pores; 15 percent distinct brown (7.5YR 4/3) clay films in root channels and/or pores and 15 percent distinct brown (7.5YR 4/3) clay films on faces of peds; 1 percent spherical iron-manganese concretions; fragments; neutral, pH 6.8, bromthymol blue; clear smooth boundary. Lab sample # 86P00407. 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; continuous - phpvsfiid 231154; patchy - phpvsfiid 231155; continuous - phpvsfiid 231154; patchy - phpvsfiid 231155

2Bw—198 to 223 centimeters (78.0 to 87.8 inches); yellowish brown (10YR 5/4) interior, very pale brown (10YR 7/3) interior, dry; silt loam; massive; hard, friable, slightly sticky, slightly plastic; 5.5 very fine tubular pores; 15 percent faint 7.5YR 4/ (7.5YR 4/) clay films in root channels and/or pores and 15 percent faint pale brown (10YR 6/3) clay films on faces of peds; fragments; neutral, pH 6.8, bromthymol blue. Lab sample # 86P00408. Very dark grayish brown (10YR 3/2) horizontal band about 5 cm thick at upper boundary and yellowish red (5YR 4/8) horizontal band about 5 cm thick below, clay bands about 3 cm thick are about 15 cm apart.; few clay films surface features in root channels and/or pores; few clay films surface features on faces of peds; continuous - phpvsfiid 231156; patchy - phpvsfiid 231157; continuous - phpvsfiid 231156; patchy - phpvsfiid 231157