Soil subgroup
Udifluvent típico
It is the central concept of the great group: it has its features and none that brings it closer to another group.
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 | Fluvent | Entisol formed by layers of alluvium left by a river when it overflows; organic matter rises and falls with each layer. |
| Great group | Udifluvent | Within the Fluvent suborder, it It is a humid climate (udic moisture regime). |
| Subgroup | típico | It is the central concept of the great group: it has its features and none that brings it closer to another group. |
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
- Well drained
- Typical effective depth
- 100 cm
Where it is found
According to the 1:500.000 national map, it covers about 298.840 ha, spread over 21 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 |
|---|---|
| Entre Ríos | 140.950 ha |
| Formosa | 94.700 ha |
| Tucumán | 47.427 ha |
| Buenos Aires | 12.023 ha |
| Chaco | 3.740 ha |
Districts where it is most common
- Patiño · Formosa
- Concordia · Entre Ríos
- Colón · Entre Ríos
- Federación · Entre Ríos
- Gualeguaychú · Entre Ríos
- Leales · Tucumán
- Formosa · Formosa
- Simoca · Tucumán
- Chicligasta · Tucumán
- Necochea · Buenos Aires
- Tres Arroyos · Buenos Aires
- Río Chico · Tucumán
- Famaillá · Tucumán
- Bermejo · Formosa
- 25 de Mayo · Chaco
- Monteros · Tucumán
- Laishi · Formosa
- Lules · Tucumán
- Tafí Viejo · Tucumán
- Graneros · Tucumán
It also appears on the detailed maps of: Entre Ríos.
How productive it is
Where it is the main soil of the map unit, the productivity index has a median of 28 (low); half of the units fall between 28 and 47.
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.
Other Udifluvent subgroups
Soil series
Series are the specific soils, named after places, that detailed maps describe under this name. Two properties with the same series have the same soil.
Entre Ríos
Arroyo Negro · Puerto Constanza · Los Cerritos · Cerro La Virgen · Las Rosas · La Azotea · Santa María Chica
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)