Soil great group

Endoacuol

Of the Acuol suborder; it saturates from below: by a close water table.

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.
SuborderAcuolMolisol with excess water: saturated near the surface for part of the year, with redox depletions (gray, mottles) in the profile.
Great groupEndoacuolWithin the Acuol suborder, it saturates from below: by a close water table.

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.

Most common surface texture
Silty clay
Most common drainage
Badly or very poorly
Typical effective depth
80 cm

Where it is found

According to the 1:500.000 national map, it covers about 93.843 ha, spread over 4 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
Corrientes93.843 ha

Districts where it is most common

It also appears on the detailed maps of: Buenos Aires.

Subgroups on the maps

  • Endoacuol típico
  • Endoacuol lítico
  • Endoacuol vértico

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.

Buenos Aires

Estancia Melamed

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