Soil subgroup
Eutrandept ustólico
It is less dry than the typical one: it is close to Ustoles, Molisoles subhumid climate.
Eutrandept is a name from the 1975 taxonomy, which many INTA soil survey maps were made with. The current edition no longer has this group: today it would be classified as Andisol.
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 | Inceptisol | Soil young, with some development below the surface (a cambic horizon) but without the clay accumulation or dark surface that would define other orders. |
|---|---|---|
| Suborder | Andept | Inceptisol formed on volcanic ash. |
| Great group | Eutrandept | Within the Andept suborder, it has high base saturation: it is not acidic. |
| Subgroup | ustólico | It is less dry than the typical one: it is close to Ustoles, Molisoles subhumid climate. |
What it means for farming
Intermediate aptitude and very dependent on location. In Argentina there are many Acueptes: Inceptisoles with excess water, often saline or sodic.
Where it is found
According to the 1:500.000 national map, it covers about 470.903 ha, spread over 4 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.
| Province | Area |
|---|---|
| Santa Cruz | 468.974 ha |
| Chubut | 1.928 ha |
Districts where it is most common
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
- 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)