Soil great group

Distrandept

Of the Andept suborder; it has low base saturation: it is acidic.

Distrandept 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 orderInceptisolSoil young, with some development below the surface (a cambic horizon) but without the clay accumulation or dark surface that would define other orders.
SuborderAndeptInceptisol formed on volcanic ash.
Great groupDistrandeptWithin the Andept suborder, it has low base saturation: it is acidic.

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
Sandy loam
Most common drainage
Well drained
Typical effective depth
32 cm

Where it is found

According to the 1:500.000 national map, it covers about 1.116.151 ha, spread over 18 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.

ProvinceArea
Neuquén433.062 ha
Chubut373.345 ha
Río Negro226.250 ha
Jujuy58.595 ha
Salta15.762 ha
Tucumán6.068 ha
Catamarca3.068 ha

Districts where it is most common

How productive it is

Where it is the main soil of the map unit, the productivity index has a median of 75 (very good); half of the units fall between 75 and 75.

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

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