Soil subgroup

Hapludol fluvacuéntico

It approaches Fluvacuentes: layers of alluvium with excess water.

What the name says

Soil Taxonomy names are built from parts, and each part says something about the soil. From general to specific:

Taxonomic orderMolisolSoil with a thick, dark surface horizon rich in organic matter (the mollic epipedon), with more than half of its exchange capacity occupied by calcium, magnesium, potassium and sodium. It forms under grassland.
SuborderUdolMolisol humid climate (udic moisture regime): the profile almost never spends more than three months dry.
Great groupHapludolWithin the Udol 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..
SubgroupfluvacuénticoIt approaches Fluvacuentes: layers of alluvium with excess water.

What it means for farming

They are the soils agricultural lands par excellence: the Pampas grassland formed them and most of Argentine agriculture is done on them. They retain water and nutrients; its limitation, when there is one, is below: clay, sodium, calcareous hardpan or drainage.

It dominates the Pampa Arenosa of the west of Buenos Aires and the south of Córdoba and Santa Fe: soils looser, with good drainage, which depend more on rain.

Where it is found

According to the 1:500.000 national map, it covers about 27.176 ha, spread over 2 districts.

Loading map…

National map units that list it. The scale is 1:500.000: good for seeing the region, not a single property.

ProvinceArea
Corrientes27.176 ha

Districts where it is most common

It also appears on the detailed maps of: Corrientes, Entre Ríos.

How productive it is

Land capability

III

class III: 100%

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 Hapludol 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

La Matrera · El Curupí

Corrientes

Chacra Vallejos

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