Soil subgroup

Vitrandept mólico

It has a dark surface rich in organic matter, almost like that of a Molisol.

Vitrandept 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 Vitrand (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 groupVitrandeptWithin the Andept suborder, it It has a lot of little altered volcanic glass.
SubgroupmólicoIt has a dark surface rich in organic matter, almost like that of a Molisol.

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
100 cm

Where it is found

According to the 1:500.000 national map, it covers about 487.187 ha, spread over 8 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
Neuquén487.187 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 80 (very good); half of the units fall between 80 and 80.

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 Vitrandept 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