IDENTIFIERS

Current Taxon Name (Soil Name): Guanica

OSD

Series Extent

User Site ID: D95PR055002

User Pedon ID: D95PR055002

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - NSSL

Lab Pedon # - 95P0600

NCSS Pedon Lab Data NASIS Record ID - 67613

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: 18.0083333

Std. Longitude: -66.9552778

Datum: WGS84

Location Description: Guanica clay, 0 to 1 percent slope; approximately 2.3 miles southeast from the intersection of PR Hwy. 121 and PR Hwy. 367 near the Machuchal community; about 0.5 mile northeast of the Lajas Valley main drainage channel; about 2,300 feet southeast from dirt road in naturalized pastureland; Guanica Municipality. (USGS San German topographic quadrangle (1966) lat. 18 degrees 00 minute 30 seconds N. and long. 66 degrees 57 minutes 19 seconds W.)

Map Unit: Gc—Guanica clayGnA—Guanica clay, 0 to 1 percent slopes

Non-MLRA Soil Survey Area: PR687—Lajas Valley Area, Puerto RicoPR787—San German Area, Southwestern Puerto Rico

PEDON

Describers Name: Milton Cortes; John R. Davis; Dewyne Williams; Warren Lynn

Current Taxonomic Class: Very-fine, smectitic, isohyperthermic Typic Calciaquerts

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 2

Correlated Information:

Soil Name - Guanica

Classificaton Date - 5/1/2023

Classifier - ASR

Soil Taxonomic Edition - thirteenth edition

Sampled As Information:

Soil Name - Guanica

Classificaton Date - 6/29/1995

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: clayey alluvial sediments

Landscape: basin

Landform: basin floor

Microfeature: gilgai

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Drainage Pattern: artificial

Runoff: low

Drainage Class: somewhat poorly

Flooding: none flooding

Ponding: occasional ponding for brief periods begining in sep

Geology: Holocene And Pleistocene member of the Alluvium formation in the Qal group.

Surface Fragments: 1.00 percent 2- to 76-millimeter mixed,

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 6/29/1995 (actual site observation date)

Air Photo ID: 7C

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

Current Weather - sunny

Pedon Horizon Lab Results - 1
Horizon	Top Depth	Bottom Depth	Sample ID	Data Collector	Total Clay	CaCO3 Clay	Total Silt	Fine Silt	Co. Silt	Total Sand	Total Sand Method	VC Sand	Co. Sand	Med. Sand	Fine Sand	VF Sand	VF Sand Method	Texture Class - Field Lab	Rubbed Fiber	Unrubbed Fiber	pH H2O
	cm	cm			%	%	%	%	%	%		%	%	%	%	%			%	%
Ap Ap Ap BA BA BA Bssk1 Bssk1 Bssk1 Bssk2 Bssk2 Bssk2 Bssk3 Bssk3 Bssk3 BsszK1 BsszK1 BsszK1 BsszK2 BsszK2 BsszK2	0 0 0 11 11 11 31 31 31 63 63 63 83 83 83 133 133 133 172 172 172	11 11 11 31 31 31 63 63 63 83 83 83 133 133 133 172 172 172 200 200 200	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0	0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0	— — — — — — — — — — — — — — — — — — — — —

Pedon Horizon Lab Results - 2
Horizon	Top Depth	Bottom Depth	Sample ID	pH CaCl2	pH NaF	pH Ox	Delta pH	LL	PL	PI	Atter. Samp. Cond.	COLE	Pot. Acidity	Ca + Mg - Meh 2	K	Ca + Mg - Sat. Paste	KCl Extract. Acidity	Base Sat. - Meh 2	CEC-7	CEC-8.2
	cm	cm						%	%	%		cm/cm	meq/100g	cmol(+)/kg	cmol(+)/kg	mmol(+)/l	cmol(+)/kg	%	cmol(+)/kg	cmol(+)/kg
Ap Ap Ap BA BA BA Bssk1 Bssk1 Bssk1 Bssk2 Bssk2 Bssk2 Bssk3 Bssk3 Bssk3 BsszK1 BsszK1 BsszK1 BsszK2 BsszK2 BsszK2	0 0 0 11 11 11 31 31 31 63 63 63 83 83 83 133 133 133 172 172 172	11 11 11 31 31 31 63 63 63 83 83 83 133 133 133 172 172 172 200 200 200	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —		— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —

Pedon Horizon Lab Results - 3
Horizon	Top Depth	Bottom Depth	Sample ID	ECEC	Phosphate P	NO3-N	EC	EC Method	EC 1:5 by volume	CaCO3 Equiv.	Equiv. Gypsum	Na	SAR	Gypsum Req.	Humic Color	Fulvic Color	Humic + Fulvic Color	Al	PI	Pyro. Hue	PyrO. Value	Pyro. Chroma
	cm	cm		cmol(+)/kg	mg/kg	mg/kg	dS/m		dS/m	%	%	mmol(+)/l	%	L-pcu/g	L-pcu/g	L-pcu/g	%
Ap Ap Ap BA BA BA Bssk1 Bssk1 Bssk1 Bssk2 Bssk2 Bssk2 Bssk3 Bssk3 Bssk3 BsszK1 BsszK1 BsszK1 BsszK2 BsszK2 BsszK2	0 0 0 11 11 11 31 31 31 63 63 63 83 83 83 133 133 133 172 172 172	11 11 11 31 31 31 63 63 63 83 83 83 133 133 133 172 172 172 200 200 200	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste	— — — — — — — — — — — — — — — — — — — — —	1 — — 2 — — 11 — — 12 — — 14 — — 10 — — 6 — —	— — 0 — — 0 — — 0 — — 0 — — 0 — — 3 — — 0	— — — — — — — — — — — — — — — — — — — — —	— 2 — — 3 — — 12 — — 19 — — 21 — — 20 — — 21 —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — — —

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
salic	—	133 - 200	28 - 81 - 109

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
mollic epipedon slickensides calcic horizon salic horizon	0—30 30—201 30—201 132—201	10—30—48 —- 28—109—137 28—81—109

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	—	—	2	—	70	1157	—	365	25.1	26.7	23.3	—	—	—	—	—	665097	Lajas Substation	Weather (NOAA)

Ap—0 to 11 centimeters (0.0 to 4.3 inches); black (5YR 2.5/1) broken face clay; 3 percent sand; 15 percent silt; 82 percent clay; moderate medium granular, and moderate granular structure; hard, firm, very sticky, very plastic; very slow permeability; 10.0 medium roots and 10.0 fine roots; 1 percent by volume 2-?-76 millimeter mixed fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.5, pH meter; abrupt wavy boundary.; dry when described; observed in pit, large or quarry

BA—11 to 31 centimeters (4.3 to 12.2 inches); black (10YR 2/1) broken face clay; 5 percent sand; 16 percent silt; 80 percent clay; strong medium angular blocky, and strong fine angular blocky, and strong coarse prismatic structure; hard, firm, very sticky, very plastic; very slow permeability; 10.0 medium roots and 10.0 fine roots; 30 percent faint pressure faces; 1 percent fine carbonate concretions and 1 percent medium carbonate concretions; 1 percent by volume 2-?-76 millimeter mixed fragments; slight effervescence, by hcl, 1n; slightly alkaline, pH 7.7, pH meter; clear wavy boundary.; dry when described; observed in pit, large or quarry

Bssk1—31 to 63 centimeters (12.2 to 24.8 inches); black (5YR 2.5/1) broken face clay; 6 percent sand; 19 percent silt; 74 percent clay; strong coarse wedge, and strong fine angular blocky, and strong medium angular blocky structure; hard, firm, very sticky, very plastic; very slow permeability; 4.0 medium roots and 4.0 fine roots; 60 percent faint slickensides (geogenic); 1 percent fine carbonate concretions and 1 percent medium carbonate concretions; 1 percent by volume 2-?-76 millimeter mixed fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.3, pH meter; clear wavy boundary.; dry when described; observed in pit, large or quarry

Bssk2—63 to 83 centimeters (24.8 to 32.7 inches); 70 percent black (5YR 2.5/1) broken face and 30 percent dark reddish brown (5YR 3/3) broken face clay; 4 percent sand; 21 percent silt; 76 percent clay; strong coarse wedge, and strong fine angular blocky, and strong medium angular blocky structure; hard, firm, very sticky, very plastic; very slow permeability; 1.0 medium roots and 1.0 fine roots; 60 percent faint slickensides (geogenic); 1 percent fine carbonate concretions and 1 percent medium carbonate concretions; 1 percent by volume 2-?-76 millimeter mixed fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; gradual wavy boundary.; dry when described; observed in pit, large or quarry

Bssk3—83 to 133 centimeters (32.7 to 52.4 inches); 80 percent dark reddish brown (5YR 3/3) broken face and 20 percent dark reddish brown (5YR 3/2) broken face clay; 3 percent sand; 23 percent silt; 74 percent clay; strong coarse wedge, and strong medium angular blocky, and strong coarse angular blocky structure; hard, firm, very sticky, very plastic; very slow permeability; 1.0 very fine roots; 30 percent faint black (5YR 2.5/1), moist, organic stains and 60 percent faint slickensides (geogenic); 1 percent fine carbonate concretions; 1 percent by volume 2-?-76 millimeter mixed fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; clear wavy boundary.; dry when described; observed in pit, large or quarry. continuous - phpvsfiid 352619; continuous - phpvsfiid 352619

BsszK1—133 to 172 centimeters (52.4 to 67.7 inches); reddish brown (2.5YR 4/3) broken face clay; 3 percent sand; 26 percent silt; 71 percent clay; strong coarse wedge, and strong medium angular blocky, and strong coarse angular blocky structure; hard, firm, very sticky, very plastic; very slow permeability; 1.0 very fine roots; 10 percent faint black (5YR 2.5/1), moist, organic stains and 60 percent faint slickensides (geogenic); 1 percent fine iron-manganese concretions; 25 percent salt crystals and 1 percent fine carbonate masses and 1 percent medium carbonate masses; 1 percent by volume 2-?-76 millimeter mixed fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; gradual wavy boundary.; dry when described; observed in pit, large or quarry. continuous - phpvsfiid 352620; continuous - phpvsfiid 352620

BsszK2—172 to 200 centimeters (67.7 to 78.7 inches); reddish brown (2.5YR 4/3) broken face clay; 2 percent sand; 23 percent silt; 75 percent clay; strong coarse wedge, and strong medium angular blocky, and strong coarse angular blocky structure; hard, firm, very sticky, very plastic; very slow permeability; 1.0 very fine roots; 30 percent faint slickensides (geogenic); 1 percent fine iron-manganese concretions and 1 percent fine faint iron-manganese masses; 10 percent salt crystals and 1 percent fine carbonate masses and 1 percent medium carbonate masses; 1 percent by volume 2-?-76 millimeter mixed fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter.; dry when described; observed in pit, large or quarry