IDENTIFIERS

Current Taxon Name (Soil Name): Casto

OSD

Series Extent

User Site ID: S1968AZ023013

User Pedon ID: S1968AZ023013

Vegetation Plot ID: S1968AZ023013

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 68C0151

NCSS Pedon Lab Data NASIS Record ID - 43603

Print Date: 1/30/2025

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: 31.3873615

Std. Longitude: -110.6859512

Datum: WGS84

Township: 23S

Range: 16E

Section: 35

PLSS Details: 1000 feet east and 1650 feet south of northwest corner

Location Description: Approximately 5.5 miles south-southeast of Harshaw, and 1 mile north of Washington Camp in road cut on east side of road from Washington Camp to Mowry-Harshaw. Photo EEX 20-61.

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: Havens and Richardson

Pedon Type: taxadjunct to the series

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from PDP 3.x

Pedon #: 13

Sampled As Information:

Soil Name - Casto

Taxonomic Class - Loamy-skeletal, mixed Udic Haplustalfs

Classificaton Date - 10/17/1968

Moisture Class - ustic

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landform: fan

Runoff: very high

Drainage Class: moderately well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 10/17/1968 (actual site observation date)

Air Photo ID: EEX 20-61

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
ARCTO3 ARCTO3 ARIST ARIST BOGR2 BOGR2 ERIN JUNIP MURI2 SCSCS	Arctostaphylos Arctostaphylos Aristida Aristida Bouteloua gracilis Bouteloua gracilis Eragrostis intermedia Juniperus Muhlenbergia rigens Schizachyrium scoparium var. scoparium	manzanita manzanita threeawn threeawn blue grama blue grama plains lovegrass juniper deergrass little bluestem	— — — — — — — — — —	— — — — — — — — — —	— — — — — — — — — —

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
36	—	—	1631	—	225	457	—	—	13.9	—	—	—	—	—	—	—	—	—	—

A1—0 to 10 centimeters (0.0 to 3.9 inches); brown (10YR 5/3), dark brown (10YR 3/3), moist; very gravelly sandy loam; moderate very fine and fine granular structure; slightly hard, very friable, nonsticky, nonplastic; 3.0 medium roots and 21.0 fine roots; 21.0 fine interstitial pores; fragments; noneffervescent; slightly acid, pH 6.5, bromthymol blue; clear wavy boundary. Lab sample # 68C01090; dry when described;

A2—10 to 25 centimeters (3.9 to 9.8 inches); pinkish gray (7.5YR 7/2), brown (7.5YR 5/4), moist; very gravelly sandy loam; massive; slightly hard, friable, nonsticky, nonplastic; 3.0 medium roots and 21.0 fine roots; 3.0 fine tubular and 21.0 fine interstitial pores; fragments; noneffervescent; moderately acid, pH 6.0, bromthymol blue; abrupt wavy boundary. Lab sample # 68C01091; dry when described;

B1t—25 to 38 centimeters (9.8 to 15.0 inches); pink (5YR 7/3), reddish brown (5YR 5/4), moist; very gravelly sandy clay loam; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 3.0 very fine and fine roots and 0.5 medium roots; 0.5 medium tubular and 3.0 fine pores; 10 percent clay films on faces of peds; fragments; noneffervescent; very strongly acid, pH 5.0, chlorophenol red; clear irregular boundary. Lab sample # 68C01092; dry when described;

B21t—38 to 53 centimeters (15.0 to 20.9 inches); dark yellowish brown (10YR 3/6), dark yellowish brown (10YR 3/6), moist; very gravelly clay; moderate medium subangular blocky structure; hard when dry, firm, moderately sticky, moderately plastic; 3.0 very fine and fine roots and 0.5 medium roots; 0.5 fine interstitial pores; 30 percent clay films on faces of peds; fragments; noneffervescent; very strongly acid, pH 5.0, chlorophenol red; clear smooth boundary. Lab sample # 68C01093; dry when described;

B22t—53 to 76 centimeters (20.9 to 29.9 inches); dark yellowish brown (10YR 4/6), dark yellowish brown (10YR 4/6), moist; very gravelly clay; 21 percent very pale brown (10YR 7/3) medium distinct mottles; moderate medium subangular blocky structure; hard when dry, firm, moderately sticky, moderately plastic; 0.5 medium roots; 3.0 very fine and fine pores; 30 percent clay films on faces of peds and in pores; fragments; noneffervescent; very strongly acid, pH 5.0, chlorophenol red; gradual wavy boundary. Lab sample # 68C01094; dry when described;

B23t—76 to 196 centimeters (29.9 to 77.2 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; very gravelly clay; massive; hard when dry, firm, very sticky, very plastic; 0.5 very fine and fine roots; 0.5 fine interstitial pores; 30 percent clay films on faces of peds and in pores; fragments; noneffervescent; strongly acid, pH 5.5, chlorophenol red; clear wavy boundary.; dry when described;. Not sampled.

B3—196 to 254 centimeters (77.2 to 100.0 inches); light reddish brown (5YR 6/4), yellowish red (5YR 4/6), moist; very gravelly clay; massive; hard when dry, firm, moderately sticky, moderately plastic; 0.5 very fine roots; 3.0 interstitial pores; 10 percent clay films on faces of peds; fragments; noneffervescent; moderately acid, pH 6.0, bromthymol blue.; dry when described;. Not sampled.