Soil subgroup
Haplumbrept éntico
It has minimal development: under the dark surface there is no marked B horizon. It is usually sandier and retains less water than the typical one.
Haplumbrept 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 Humudept.
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 | Umbrept | Inceptisol with a dark but acidic surface (umbric epipedon). |
| Great group | Haplumbrept | Within the Umbrept suborder, it It is the simplest of the suborder: it does not have a clay horizon or any other feature that places it in a more specific group.. |
| Subgroup | éntico | It has minimal development: under the dark surface there is no marked B horizon. It is usually sandier and retains less water than the typical one. |
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.
- Most common surface texture
- Loam-silt-gravel
- Most common drainage
- Well drained
- Typical effective depth
- 95 cm
Where it is found
According to the 1:500.000 national map, it covers about 828.769 ha, spread over 28 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 |
|---|---|
| Salta | 495.111 ha |
| Jujuy | 189.480 ha |
| Catamarca | 80.657 ha |
| Tucumán | 56.195 ha |
| Santiago del Estero | 7.326 ha |
Districts where it is most common
- General José de San Martín · Salta
- Anta · Salta
- Ledesma · Jujuy
- Santa Bárbara · Jujuy
- La Paz · Catamarca
- Orán · Salta
- Santa Victoria · Salta
- Iruya · Salta
- Guachipas · Salta
- Chicligasta · Tucumán
- Capital · Salta
- La Caldera · Salta
- La Candelaria · Salta
- Dr. Manuel Belgrano · Jujuy
- La Cocha · Tucumán
- Yerba Buena · Tucumán
- Rosario de Lerma · Salta
- Metán · Salta
- Choya · Santiago del Estero
- Paclín · Catamarca
Other Haplumbrept subgroups
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)