Soil subgroup

Torripsament xérico

It has a xeric humidity regime: it rains in winter and summer is dry.

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 groupTorripsamentWithin the Psament suborder, it It has an arid climate (torric moisture regime).
SubgroupxéricoIt has a xeric humidity regime: it rains in winter and summer is dry.

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.

Where it is found

According to the 1:500.000 national map, it covers about 313.493 ha, spread over 6 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 Negro281.252 ha
Chubut30.614 ha
Neuquén1.628 ha

Districts where it is most common

Other Torripsament subgroups

Soils it shares map units with

Several soils share each map unit. These are the ones most often found alongside this one: on a property, you will likely find them in the nearby low ground or on the next rise.

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