IDENTIFIERS

Current Taxon Name (Soil Name): San Anton

OSD

Series Extent

User Site ID: 1999PR055003

User Pedon ID: D99PR055003

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - NSSL

Lab Pedon # - 86P0223

NCSS Pedon Lab Data NASIS Record ID - 58028

Print Date: 12/4/2024

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: 17.9994444

Std. Longitude: -66.8902778

Datum: WGS84

Location Description: San Anton clay loam, 0 to 2 percent slopes, occasionally flooded; approximately 1.3 miles northeast from the intersection of P.R. Hwy. 116 and P.R. Hwy. 334; about 0.90 mile west of La Joya community; about 200 feet east of P.R. Hwy. 116 on cropland; Guanica Municipality. (USGS Guanica topographic quadrangle (1966); lat. 17 degrees 59 minutes 58 seconds N., and long. 66 degrees 53 minutes 25 seconds W.)

Map Unit: ScA—San Anton clay loam, 0 to 2 percent slopes, occasionally flooded

State: Puerto Rico

County: PR055—Guanica

MLRA: 273—Semiarid Coastal Plains

Regional Office: SE—Southeast

Non-MLRA Soil Survey Area: PR787—San German Area, Southwestern Puerto Rico

PEDON

Describers Name: Dewayne Williams; Louis Daniels; Gilberto Acevedo; Joaquin Torres-Mas

Current Taxonomic Class: Fine-loamy, mixed, superactive, isohyperthermic Cumulic Haplustolls

Current Taxon Kind: series

Pedon Type: TUD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 3

Correlated Information:

Soil Name - San Anton

PSC - 25 to 100 cm.

Classificaton Date - 3/19/2018

Soil Taxonomic Edition - twelfth edition

Moisture Class - ustic

Moisture Subclass - ustic

Sampled As Information:

Soil Name - San Anton

Classificaton Date - 5/21/1985

Dynamic Soil Properties:

Erosion Class - 0

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: stratified alluvium derived from igneous, metamorphic and sedimentary rock

Landscape: Rio Loco river valley

Landform: flood plain

Geomorphic Component Flats: talf

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Drainage Pattern: parallel

Runoff: negligible

Drainage Class: well

Flooding: occasional flooding for brief periods begining in oct

Ponding: none ponding

Geology: Holocene member of the Alluvium formation in the Qa group.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 5/21/1985 (actual site observation date)

Air Photo ID: 11A

Surface Water Kind: none observed

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

Site Obs. Cover Kind 2 - row crop

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
mollic epipedon cambic horizon	0—60 33—177	56—60—81 60—144—152

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	—	—	18	—	240	856	—	365	26.3	27.7	24.8	—	—	—	—	—	668955	Santa Rita	Weather (NOAA)

Ap—0 to 20 centimeters (0.0 to 7.9 inches); dark grayish brown (10YR 4/2) broken face, very dark grayish brown (10YR 3/2) broken face, moist; clay loam; 30 percent sand; 35 percent silt; 35 percent clay; weak medium subangular blocky parts to moderate fine granular structure; slightly hard, friable, moderately sticky, moderately plastic; moderate permeability; 6.0 fine roots throughout; 3.0 very fine tubular and 0.5 fine tubular pores; fragments; slightly alkaline, pH 7.6, pH meter; clear smooth boundary. Lab sample # 86P01325; dry when described; observed in pit, large or quarry

A—20 to 33 centimeters (7.9 to 13.0 inches); dark grayish brown (10YR 4/2) broken face, very dark grayish brown (10YR 3/2) broken face, moist; clay loam; 23 percent sand; 40 percent silt; 37 percent clay; weak coarse prismatic parts to moderate fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; moderate permeability; 0.5 very fine roots throughout; 0.5 fine tubular pores; fragments; slightly alkaline, pH 7.8, pH meter; clear smooth boundary. Lab sample # 86P01326; dry when described; observed in pit, large or quarry

Bw1—33 to 61 centimeters (13.0 to 24.0 inches); dark grayish brown (10YR 4/2) broken face, dark brown (10YR 3/3) broken face and very dark grayish brown (10YR 3/2) broken face, moist; silty clay loam; 19 percent sand; 43 percent silt; 38 percent clay; moderate fine subangular blocky structure; slightly hard, firm, moderately sticky, moderately plastic; moderate permeability; 0.5 very fine roots throughout; 0.5 very fine tubular pores; fragments; slightly alkaline, pH 7.7, pH meter; clear smooth boundary. Lab sample # 86P01327; dry when described; observed in pit, large or quarry

Bw2—61 to 79 centimeters (24.0 to 31.1 inches); dark grayish brown (10YR 4/2) broken face, dark brown (10YR 3/3) broken face and very dark grayish brown (10YR 3/2) broken face, moist; clay loam; 22 percent sand; 38 percent silt; 40 percent clay; moderate fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; moderate permeability; 0.5 very fine roots throughout; 0.5 very fine tubular pores; fragments; moderately alkaline, pH 7.9, pH meter; abrupt smooth boundary. Lab sample # 86P01328; dry when described; observed in pit, large or quarry

Bw3—79 to 104 centimeters (31.1 to 40.9 inches); dark grayish brown (10YR 4/2) broken face, very dark grayish brown (10YR 3/2) broken face, moist; sandy clay loam; 60 percent sand; 18 percent silt; 22 percent clay; weak coarse prismatic structure; soft, very friable, slightly sticky, moderately plastic; moderate permeability; 0.5 very fine roots throughout and 0.5 fine roots throughout; 0.5 very fine tubular pores; fragments; slightly alkaline, pH 7.7, pH meter; abrupt smooth boundary. Lab sample # 86P01329; dry when described; observed in pit, large or quarry

Bw4—104 to 137 centimeters (40.9 to 53.9 inches); brown (10YR 4/3) broken face, dark brown (10YR 3/3) broken face, moist; sandy clay loam; 47 percent sand; 28 percent silt; 25 percent clay; weak coarse prismatic parts to weak medium angular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 3.0 very fine roots throughout and 3.0 fine roots throughout; 0.5 very fine tubular pores; fragments; slightly alkaline, pH 7.6, pH meter; gradual smooth boundary. Lab sample # 86P01330; dry when described; observed in pit, large or quarry

Bw5—137 to 203 centimeters (53.9 to 79.9 inches); brown (10YR 4/3) broken face, dark brown (10YR 3/3) broken face, moist; sandy clay loam; 51 percent sand; 26 percent silt; 23 percent clay; weak coarse prismatic parts to weak medium angular blocky structure; soft, friable, slightly sticky, slightly plastic; moderate permeability; 3.0 very fine roots throughout and 3.0 fine roots throughout; 0.5 very fine tubular pores; fragments; slightly alkaline, pH 7.6, pH meter. Lab sample # 86P01331; dry when described; observed in pit, large or quarry