IDENTIFIERS

Current Taxon Name (Soil Name): Maguayo

OSD

Series Extent

User Site ID: D99PR079006

User Pedon ID: D99PR079006

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - NSSL

Lab Pedon # - 81P0319

NCSS Pedon Lab Data NASIS Record ID - 49163

Print Date: 2/16/2025

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: 18.0119444

Std. Longitude: -67.0813889

Datum: WGS84

Location Description: Maguayo very gravelly clay loam, 2 to 12 percent slopes; approximately 0.2 mile east of Maguayo community on PR Hwy. 305; about 50 feet north of highway on pasture field; Lajas Municipality. (USGS San German topographic quadrangle (1966); lat. 18 degrees 00 minute 43 seconds N. and long. 67 degrees 4 minutes 53 seconds W.)

Map Unit: AmC2—Amelia-Maguayo gravelly clay loams, 5 to 12 percent slopes, erod edMbC—Maguayo very gravelly sandy clay loam, 2 to 12 percent slopes

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

PEDON

Describers Name: Gilberto Acevedo, Luis H. Rivera

Current Taxonomic Class: Fine, mixed, superactive, isohyperthermic Vertic Calciargids

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 6

Correlated Information:

Soil Name - Maguayo

PSC - 30 to 80 cm.

Classificaton Date - 2/27/2009

Soil Taxonomic Edition - tenth edition

Moisture Class - aridic (torric)

Moisture Subclass - aridic (torric)

Sampled As Information:

Soil Name - Maguayo

Classificaton Date - 1/21/1981

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landscape: upland

Landform: alluvial fan

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: convex

Drainage Pattern: parallel

Runoff: very high

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

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

Surface Fragments: 36.00 percent 2- to 75-millimeter mixed,

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 1/21/1981 (actual site observation date)

Air Photo ID: 6C

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 Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon calcic horizon slickensides	0—30 30—89 89—163 89—163	8—10—18 36—40—50 38—74—89 50—74—114

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
—	—	—	25	—	10	668	—	365	26.5	28.1	24.6	28	29.4	26	—	—	2066	Combate Station	NRCS-NWCC SCAN

Ap—0 to 15 centimeters (0.0 to 5.9 inches);, very dark grayish brown (10YR 3/2) broken face, moist; gravelly sandy clay loam; 56 percent sand; 23 percent silt; 21 percent clay; moderate fine granular structure; soft, friable, nonsticky, nonplastic; 7.0 fine roots throughout; 36 percent by volume 2-?-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; moderately acid, pH 5.8, pH meter; gradual smooth boundary.; observed in cut

A—15 to 30 centimeters (5.9 to 11.8 inches);, dark yellowish brown (10YR 3/4) broken face, moist; gravelly coarse sandy loam; 61 percent sand; 20 percent silt; 19 percent clay; weak fine subangular blocky structure; slightly hard, friable, nonsticky, nonplastic; 7.0 fine roots throughout; 38 percent by volume 2-?-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.3, pH meter; clear smooth boundary.; observed in cut

Bt1—30 to 58 centimeters (11.8 to 22.8 inches);, dark yellowish brown (10YR 4/4) broken face, moist; clay; 24 percent sand; 18 percent silt; 57 percent clay; moderate medium subangular blocky structure; hard, firm, nonsticky, slightly plastic; 3.0 fine roots throughout; 55 percent faint clay films on all faces of peds; 12 percent by volume 2-?-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; neutral, pH 7.3, pH meter; gradual wavy boundary.; observed in cut

Bt2—58 to 89 centimeters (22.8 to 35.0 inches);, brown (7.5YR 4/4) broken face, moist; clay; 37 percent sand; 23 percent silt; 40 percent clay; weak fine subangular blocky structure; hard, firm, nonsticky, slightly plastic; 1.0 fine roots throughout; 55 percent faint clay films on all faces of peds; 12 percent by volume 2-?-75 millimeter mixed fragments; slight effervescence, by hcl, 1n; slightly alkaline, pH 7.6, pH meter; gradual wavy boundary.; observed in cut

Bkss1—89 to 120 centimeters (35.0 to 47.2 inches);, brown (7.5YR 5/4) broken face, moist; clay; 33 percent sand; 25 percent silt; 42 percent clay; massive, and weak medium subangular blocky; hard, firm, nonsticky, moderately plastic; 1.0 fine roots throughout; 10 percent distinct slickensides (pedogenic); 15 percent medium prominent threadlike very pale brown (10YR 8/3), moist, carbonate masses; 9 percent by volume 2-?-75 millimeter mixed fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.8, pH meter; gradual wavy boundary.; observed in cut

Bkss2—120 to 164 centimeters (47.2 to 64.6 inches);, strong brown (7.5YR 5/6) broken face, moist; clay; 29 percent sand; 24 percent silt; 48 percent clay; weak medium subangular blocky, and massive; hard, friable, nonsticky, moderately plastic; 10 percent distinct slickensides (pedogenic); 15 percent medium prominent threadlike very pale brown (10YR 8/3), moist, carbonate masses; 12 percent by volume 2-?-75 millimeter mixed fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter.; observed in cut