IDENTIFIERS

Current Taxon Name (Soil Name): Cartagena

OSD

Series Extent

User Site ID: S2017PR079014

User Pedon ID: S2017PR079014

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - KSSL

Lab Pedon # - 18N0527

User Project ID: LAJA_004_NEON

Project Name: Lajas Experimental Station

Print Date: 12/6/2025

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: 18.0232900

Std. Longitude: -67.0804400

Datum: WGS84

Location Description: Site is located 0.82 mile southwest from the UPRM-Lajas Experiment Station main building. Site is located on private farmland dedicate to hay production.

Map Unit: FrA—Fraternidad clay, 0 to 2 perecent slopesCeA—Cartagena clay, 0 to 2 percent slopes

Country: RQ—Puerto Rico

State: Puerto Rico

County: PR079—Lajas

MLRA: 273—Semiarid Coastal Plains

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

PEDON

Describers Name: Samuel Rios

Current Taxonomic Class: Fine, mixed, superactive, isohyperthermic Sodic Haplusterts

Current Taxon Kind: series

Pedon Record Orgin: NASIS

Sampled As Information:

Soil Name - Cartagena

Taxonomic Class - Fine, mixed, superactive, isohyperthermic Sodic Haplusterts

Taxon Kind - series

PSC - 28 to 100 cm.

Classificaton Date - 8/10/2017

Classifier - Samuel Rios

Soil Taxonomic Edition - twelfth edition

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

QC Status: level 3

QA Status: level 3

SITE

Parent Material: clayey marine deposits derived from igneous, metamorphic and sedimentary rock

Landscape: coastal plain

Landform: basin floor

Geomorphic Component Flats: talf

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Drainage Class: somewhat poorly

Flooding: none flooding

Ponding: none ponding

Surface Fragments:

Benchmark Soil?: no

RaCA Information:

RaCA Site ID - LAJA_014

DSP Plot ID - SW

Plot Baseline Azimuth - 45

Plot Baseline Length - 2

Plot Width - 40

Plot/Site Set Up By - Center of Pit

Plot or Site Recorder - Debbie Anderson

VEGETATION

SITE OBSERVATION

Observation Date: 8/10/2017 (actual site observation date)

Data Collector: Samuel Rios

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - other grass/herbaceous cover

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
slickensides salt accumulations	28—80 51—80	—48— —29—

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
0	—	—	—	—		1175	—	365	25.2	26.7	23.3	—	—	—	—	—	665097	LAJAS SUBSTN	SERCC

Ap—0 to 28 centimeters (0.0 to 11.0 inches);, very dark grayish brown (10YR 3/2) broken face, moist; clay; strong medium subangular blocky, and strong coarse subangular blocky structure; extremely hard, very firm, moderately sticky, very plastic; many very fine roots throughout and many fine roots throughout; common very fine interstitial and few fine tubular and common fine interstitial pores; 60 percent prominent pressure faces; 0 percent by volume unspecified fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, pH indicator solutions; clear smooth boundary. Lab sample # 18N02685; dry when described; observed in pit, small

ABss—28 to 51 centimeters (11.0 to 20.1 inches);, very dark grayish brown (10YR 3/2) broken face, moist; clay; moderate medium subangular blocky, and moderate coarse subangular blocky structure; extremely hard, very firm, moderately sticky, very plastic; common very fine roots throughout and common fine roots throughout; common very fine irregular and common very fine tubular and common medium vesicular and common fine tubular and common fine vesicular and common fine irregular pores; 30 percent prominent slickensides (pedogenic); 0 percent by volume unspecified fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, pH indicator solutions; clear wavy boundary. Lab sample # 18N02686; dry when described; observed in pit, small

Bssz—51 to 80 centimeters (20.1 to 31.5 inches);, very dark grayish brown (10YR 3/2) broken face, moist; clay; moderate medium subangular blocky, and moderate coarse subangular blocky structure; extremely hard, very firm, moderately sticky, very plastic; few very fine roots throughout; few very fine vesicular and common very fine irregular and common medium irregular and common fine irregular pores; 30 percent prominent slickensides (pedogenic); 1 percent fine yellowish brown (10YR 5/8), moist, masses of oxidized iron; 1 percent coarse faint white (10YR 8/1), dry, salt crystals; 0 percent by volume unspecified fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, pH indicator solutions; abrupt wavy boundary. Lab sample # 18N02687; dry when described; observed in pit, small

2C—80 to 100 centimeters (31.5 to 39.4 inches);, yellowish brown (10YR 5/6) broken face, moist; sandy clay; massive; extremely hard, very firm, moderately sticky, very plastic; few very fine roots throughout and few fine roots throughout; common medium interstitial pores; 1 percent medium black (10YR 2/1), moist, iron-manganese masses and 10 percent medium black (10YR 2/1), moist, iron-manganese nodules and 10 percent fine black (10YR 2/1), moist, iron-manganese nodules and 30 percent fine brownish yellow (10YR 6/8), moist, masses of oxidized iron; 5 percent by volume nonflat rounded very strongly coherent cemented 2-15-20 millimeter limestone, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, pH indicator solutions. Lab sample # 18N02688; dry when described; observed in pit, small. Material with color from above horizons in cracks