Soil great group

Torripsament

Of the Psament suborder; it It has an arid climate (torric 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 groupTorripsamentWithin the Psament suborder, it It has an arid climate (torric 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
120 cm

Where it is found

According to the 1:500.000 national map, it covers about 16.892.566 ha, spread over 100 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
Mendoza5.219.740 ha
La Pampa4.549.961 ha
San Luis2.069.426 ha
Río Negro1.520.854 ha
La Rioja1.012.885 ha
San Juan568.112 ha
Catamarca508.906 ha
Neuquén464.955 ha
Buenos Aires316.586 ha
Santa Cruz273.480 ha

Districts where it is most common

It also appears on the detailed maps of: Santiago del Estero.

How productive it is

Where it is the main soil of the map unit, the productivity index has a median of 16 (very low); half of the units fall between 12 and 22.

Land capability

VI
VII

class VI: 89% · class VII: 11%

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