Soil great group

Udipsament

Of the Psament suborder; it It is a humid climate (udic moisture regime).

What the name says

Soil Taxonomy names are built from parts, and each part says something about the soil. From general to specific:

Taxonomic orderEntisolSoil without diagnostic horizons, or almost: recently deposited material (sand, alluvium) or on which the climate did not have time to act.
SuborderPsamentEntisol sandy throughout the profile: dunes, sand sheets.
Great groupUdipsamentWithin the Psament suborder, it It is a humid climate (udic moisture regime).

What it means for farming

Very variable. The sandy ones (Psamentes) retain little water and blow away; alluvial ones (Fluventes) can be good but they flood; the shallow ones on rock (lithic) are barely useful for grazing.

Most common surface texture
Sandy
Most common drainage
Something Excessive
Typical effective depth
200 cm

Where it is found

According to the 1:500.000 national map, it covers about 967.652 ha, spread over 39 districts.

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National map units that list it. The scale is 1:500.000: good for seeing the region, not a single property.

ProvinceArea
Corrientes435.966 ha
Buenos Aires272.766 ha
Santa Fe194.861 ha
Córdoba45.022 ha
Entre Ríos16.376 ha
Misiones1.642 ha
Chaco1.020 ha

Districts where it is most common

It also appears on the detailed maps of: Buenos Aires, Corrientes, Entre Ríos.

How productive it is

Where it is the main soil of the map unit, the productivity index has a median of 38 (low); half of the units fall between 27 and 42.

Land capability

III
IV
VI
VII

class III: 74% · class IV: 9% · class VI: 9% · class VII: 9%

Taken from the maps that include this data. A map unit with several soils has a single index, and it is only attributed to the dominant soil.

Subgroups on the maps

Soil series

Series are the specific soils, named after places, that detailed maps describe under this name. Two properties with the same series have the same soil.

Corrientes

Estancia Madre · La Perlina

Entre Ríos

Estancia Sol de Mayo · Estancia San Isidro · Estancia Retiro · Holt · Los Cerrillos

Buenos Aires

Veinticinco de Mayo · El Tuyu · Pirovano · Punta Medanos · Villa Gesell · Aguas Verdes · La Guanaca

The definitions are a plain-language summary of the USDA Keys to Soil Taxonomy. The formal definition includes thickness, color and percentage thresholds that are left out here.

Sources