Soil subgroup
Albacualf 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 | Alfisol | Soil with a clay accumulation horizon (argillic or natric) and good base saturation, but without the thick, dark surface of a Molisol. |
|---|---|---|
| Suborder | Acualf | Alfisol with excess water: saturated near the surface part of the year, with redox depletions. |
| Great group | Albacualf | Within the Acualf suborder, it has a albic horizon (clear and washed) about a sudden change in texture. |
| 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
Acceptable fertility, but the surface layer is thinner and poor in organic matter. In the Pampas region many Alfisoles are sodic or floodable (Natracualfes) and are left for livestock.
- Most common surface texture
- Silt clay loam
- Most common drainage
- Poor
- Typical effective depth
- 75 cm
Where it is found
According to the 1:500.000 national map, it covers about 1.353.127 ha, spread over 20 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 |
|---|---|
| Formosa | 1.010.396 ha |
| Corrientes | 249.569 ha |
| Chaco | 37.911 ha |
| Córdoba | 25.245 ha |
| Santa Fe | 22.998 ha |
| Santiago del Estero | 4.322 ha |
| Neuquén | 2.688 ha |
Districts where it is most common
- Pilagás · Formosa
- Patiño · Formosa
- Formosa · Formosa
- Paso de los Libres · Corrientes
- Empedrado · Corrientes
- Pirané · Formosa
- Libertad · Chaco
- General Obligado · Santa Fe
- Bella Vista · Corrientes
- San Roque · Corrientes
- Itatí · Corrientes
- Unión · Córdoba
- San Luis del Palmar · Corrientes
- Tulumba · Córdoba
- Berón de Astrada · Corrientes
- Choya · Santiago del Estero
- Chos Malal · Neuquén
- San Justo · Córdoba
- Tercero Arriba · Córdoba
- Río Segundo · Córdoba
It also appears on the detailed maps of: Entre Ríos, Santiago del Estero.
How productive it is
Where it is the main soil of the map unit, the productivity index has a median of 32 (low); half of the units fall between 13 and 32.
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 Albacualf 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
General Nazar
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)