Soil great group
Udortent
Of the Ortent suborder; it It is a humid climate (udic 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 | Udortent | Within the Ortent suborder, it It is a humid climate (udic 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 loam
- Most common drainage
- Imperfect
- Typical effective depth
- 400 cm
Where it is found
According to the 1:500.000 national map, it covers about 725.993 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 |
|---|---|
| Misiones | 317.273 ha |
| Santa Cruz | 261.258 ha |
| Corrientes | 83.464 ha |
| Chaco | 63.999 ha |
Districts where it is most common
- Lago Argentino · Santa Cruz
- San Pedro · Misiones
- 25 de Mayo · Misiones
- Guaraní · Misiones
- General Donovan · Chaco
- General Manuel Belgrano · Misiones
- Mercedes · Corrientes
- Montecarlo · Misiones
- Goya · Corrientes
- Libertad · Chaco
- Santo Tomé · Corrientes
- Paso de los Libres · Corrientes
- Bella Vista · Corrientes
- Lavalle · Corrientes
- Comandante Fernández · Chaco
- Oberá · Misiones
- Leandro N. Alem · Misiones
- Monte Caseros · Corrientes
- Eldorado · Misiones
- General Alvear · Corrientes
It also appears on the detailed maps of: Buenos Aires, Entre Ríos, Misiones.
How productive it is
Where it is the main soil of the map unit, the productivity index has a median of 10 (very low); half of the units fall between 10 and 14.
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
- Udortent típico
- Udortent lítico
- Udortent ácuico
- Udortent andéptico
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.
Misiones
A. Chafariz · El Ceibo · A. Soberbio · A. Veinticinco · San Ignacio
Buenos Aires
Las Parvas
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)
- INTA - Instituto de Suelos - CIRN. (2023). Cartas de Suelos República Argentina - Provincia de Buenos Aires (2.0) [Data set]. Zenodo. · CC BY 4.0