Soil great group

Xeropsament

Of the Psament suborder; it It has a Mediterranean climate (xeric 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 groupXeropsamentWithin the Psament suborder, it It has a Mediterranean climate (xeric 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
Excessive
Typical effective depth
100 cm

Where it is found

According to the 1:500.000 national map, it covers about 922.723 ha, spread over 15 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
Río Negro364.697 ha
Santa Cruz239.829 ha
Neuquén159.759 ha
Chubut158.438 ha

Districts where it is most common

How productive it is

Where it is the main soil of the map unit, the productivity index has a median of 53.5 (average); half of the units fall between 43 and 64.

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

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