IDENTIFIERS

Current Taxon Name (Soil Name): Sonoita

OSD

Series Extent

User Site ID: S1968AZ023003

User Pedon ID: S1968AZ023003

Vegetation Plot ID: S1968AZ023003

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 68C0147

NCSS Pedon Lab Data NASIS Record ID - 43599

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: 31.6819439

Std. Longitude: -111.0788879

Datum: WGS84

Township: 20S

Range: 12E

Section: 23

PLSS Details: 600 feet west of E 1/4 corner

Location Description: 2 miles south and 1 mile west of Amado. 0.4 mile west of ranch house, 75 feet south of ranch trail, Photo AMS-265.

State: Arizona

County: AZ023—Santa Cruz

Non-MLRA Soil Survey Area: AZ667—Santa Cruz and Parts of Cochise and Pima Counties, Arizona

PEDON

Describers Name: Richardson and Clemmons

Current Taxon Kind: series

Pedon Type: TUD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from PDP 3.x

Pedon #: 3

Sampled As Information:

Soil Name - Sonoita

Taxonomic Class - Coarse-loamy, mixed Typic Haplargids

PSC - 43 to 94 cm.

Classificaton Date - 10/9/1968

Moisture Class - aridic (torric)

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landform: fan

Runoff: medium

Drainage Class: well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 10/9/1968 (actual site observation date)

Air Photo ID: AMS-265

Surface Cover Properties:

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
ARIST ARIST BORO2 BORO2 DICA8 FEROC FEROC ISTE2 MUPU2 MUPU2	Aristida Aristida Bouteloua rothrockii Bouteloua rothrockii Digitaria californica Ferocactus Ferocactus Isocoma tenuisecta Muhlenbergia pungens Muhlenbergia pungens	threeawn threeawn Rothrock's grama Rothrock's grama Arizona cottontop barrel cactus barrel cactus burroweed sandhill muhly sandhill muhly	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —

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
3	—	—	991	—	90	305	—	—	17.8	—	—	—	—	—	—	—	—	—	—

A11—0 to 5 centimeters (0.0 to 2.0 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; gravelly sandy loam; weak medium platy parts to weak fine granular structure; slightly hard, very friable, nonsticky, nonplastic; 21.0 very fine and fine roots; 0.5 fine and medium tubular and 21.0 fine interstitial pores; 20 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; slightly acid, pH 6.5, bromthymol blue; abrupt smooth boundary. Lab sample # 68C01060; dry when described;

A—0 to 38 centimeters (0.0 to 15.0 inches); fragments. Lab sample # 68C01068; dry when described;. 0 to 15 inch samples were selected from 20 pedons at 10-foot intervals along two 100-foot transects that intersect at the backhoe pit.

A12—5 to 10 centimeters (2.0 to 3.9 inches); brown (7.5YR 5/4), reddish brown (5YR 4/4), moist; gravelly sandy loam; massive parts to weak fine and medium granular; hard when dry, very friable, nonsticky, nonplastic; 21.0 very fine and fine roots; 0.5 very fine and fine interstitial and 3.0 fine interstitial pores; 20 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; slightly acid, pH 6.5, bromthymol blue; clear smooth boundary. Lab sample # 68C01061; dry when described;

B21—10 to 25 centimeters (3.9 to 9.8 inches); reddish brown (5YR 5/4), dark reddish brown (5YR 3/4), moist; gravelly sandy loam; massive parts to fine and medium subangular blocky; hard when dry, friable, slightly sticky, nonplastic; 3.0 very fine and fine roots and 0.5 medium roots; 3.0 very fine and fine tubular pores; 20 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; neutral, pH 7.0, bromthymol blue; clear wavy boundary. Lab sample # 68C01062; dry when described;

B22—25 to 43 centimeters (9.8 to 16.9 inches); reddish brown (5YR 5/4), dark reddish brown (5YR 3/4), moist; gravelly sandy loam; massive parts to medium and coarse subangular blocky; hard when dry, friable, slightly sticky, nonplastic; 3.0 very fine and fine roots and 0.5 medium roots; 3.0 very fine and fine tubular pores; 20 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; neutral, pH 7.0, bromthymol blue; clear wavy boundary. Lab sample # 68C01063; dry when described;

B23TCAB—43 to 66 centimeters (16.9 to 26.0 inches); reddish brown (5YR 5/4), yellowish red (5YR 4/6), moist; gravelly sandy clay loam; pinkish gray (7.5YR 7/2) and 3 percent white (10YR 8/1) fine distinct mottles; weak medium subangular blocky structure; hard when dry, friable, slightly sticky, slightly plastic; 3.0 very fine and fine roots and 0.5 coarse roots; 0.5 very fine and fine and 0.5 medium tubular pores; 30 percent clay films on faces of peds; 25 percent by volume 2-39-75 millimeter unspecified fragments; slight effervescence; moderately alkaline, pH 8.0, thymol-blue; clear wavy boundary. Lab sample # 68C01064; dry when described;

2B24TCAB—66 to 102 centimeters (26.0 to 40.2 inches); reddish brown (5YR 5/4) and reddish brown (2.5YR 4/4), yellowish red (5YR 4/6) and reddish brown (2.5YR 4/4), moist; gravelly sandy clay loam; light reddish brown (5YR 6/3) and 1 percent white (5YR 8/1) fine faint mottles; massive; very hard, friable, slightly sticky, slightly plastic; 3.0 very fine and fine roots; 3.0 very fine and fine tubular pores; 30 percent by volume 2-39-75 millimeter unspecified fragments; slight effervescence; moderately alkaline, pH 8.0, thymol-blue; clear wavy boundary. Lab sample # 68C01065; dry when described;

2B25TCAB—102 to 157 centimeters (40.2 to 61.8 inches); light brown (7.5YR 6/4), reddish brown (5YR 4/4), moist; gravelly sandy clay loam; light brown (7.5YR 6/4) and 3 percent pinkish white (7.5YR 8/2) fine distinct mottles; massive; very hard, friable, slightly sticky, moderately plastic; 0.5 fine and medium roots; 0.5 fine and medium tubular pores; 30 percent clay films on faces of peds and in pores; 30 percent by volume 2-39-75 millimeter unspecified fragments; strong effervescence; moderately alkaline, pH 8.0, thymol-blue; clear wavy boundary. Lab sample # 68C01066; dry when described;

2B3CAB—157 to 178 centimeters (61.8 to 70.1 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; gravelly sandy loam; massive; very hard, friable, slightly sticky, slightly plastic; 0.5 very fine and fine tubular pores; 40 percent by volume 2-39-75 millimeter unspecified fragments; slight effervescence; moderately alkaline, pH 8.0, thymol-blue. Lab sample # 68C01067; dry when described;