Soil great group

Hidracuent

Of the Acuent suborder; it is almost permanently saturated with water, with fluid material that does not support weight.

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.
SuborderAcuentEntisol with excess water: saturated near the surface, with redox depletions.
Great groupHidracuentWithin the Acuent suborder, it is almost permanently saturated with water, with fluid material that does not support weight.

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
Clay
Most common drainage
Imperfect
Typical effective depth
140 cm

Where it is found

According to the 1:500.000 national map, it covers about 32.093 ha, spread over 2 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
Chaco27.937 ha
Buenos Aires4.156 ha

Districts where it is most common

It also appears on the detailed maps of: Entre Ríos.

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.

Entre Ríos

San Francisco · Las Achiras

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