Soil great group
Torriortent
Of the Ortent 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 order | Entisol | Soil without diagnostic horizons, or almost: recently deposited material (sand, alluvium) or on which the climate did not have time to act. |
|---|---|---|
| Suborder | Ortent | Entisol on material that is neither sandy nor alluvial: eroded slopes, rock, recent sediments. |
| Great group | Torriortent | Within the Ortent 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.
The most widespread soil of extra-Andean Patagonia and the arid west: stony or sandy, without development, under steppe.
- Most common surface texture
- Loamy sand
- Most common drainage
- Well drained
- Typical effective depth
- 100 cm
Where it is found
According to the 1:500.000 national map, it covers about 22.871.009 ha, spread over 125 districts.
Loading map…
National map units that list it. The scale is 1:500.000: good for seeing the region, not a single property.
| Province | Area |
|---|---|
| La Rioja | 3.847.729 ha |
| San Juan | 3.296.469 ha |
| Mendoza | 2.624.050 ha |
| Río Negro | 1.999.701 ha |
| San Luis | 1.892.907 ha |
| Chubut | 1.826.760 ha |
| Neuquén | 1.744.376 ha |
| Santa Cruz | 1.637.287 ha |
| Catamarca | 1.633.096 ha |
| Salta | 946.322 ha |
Districts where it is most common
- Iglesia · San Juan
- San Carlos · Mendoza
- Belgrano · San Luis
- General Lamadrid · La Rioja
- Malargüe · Mendoza
- Juan Martín de Pueyrredón · San Luis
- Belén · Catamarca
- Lago Buenos Aires · Santa Cruz
- General Belgrano · La Rioja
- Deseado · Santa Cruz
- La Poma · Salta
- 9 de Julio · Río Negro
- Capital · La Rioja
- Rawson · Chubut
- Jáchal · San Juan
- General Felipe Varela · La Rioja
- Lihuel Calel · La Pampa
- 25 de Mayo · Río Negro
- General Juan Facundo Quiroga · La Rioja
- Valcheta · Río Negro
How productive it is
Where it is the main soil of the map unit, the productivity index has a median of 12 (very low); half of the units fall between 5 and 25.
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
- Torriortent típico
- Torriortent lítico
- Torriortent tapto árgico
- Torriortent tapto cámbico
- Torriortent lítico xérico
- Torriortent ácuico
- Torriortent ústico
- Torriortent vértico
- Torriortent lítico ústico
- Torriortent xérico
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
- Soil Survey Staff. (2014). Claves para la Taxonomía de Suelos, 12.ª edición. USDA - Natural Resources Conservation Service. · Dominio público (USDA)
- INTA · Dominio público (carta 1:500.000)