Soil great group

Natracuert

Of the Acuert suborder; it has a natric horizon: accumulation of clay with a lot of exchangeable sodium, which disperses the clay and blocks the passage of water and roots.

What the name says

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

Taxonomic orderVertisolSoil very clayey, with clays that swell when wet and contract when dry: when dry it opens wide and deep cracks, and when wet the layers slide against each other leaving slickensides.
SuborderAcuertVertisol with excess water and redox depletions near the surface.
Great groupNatracuertWithin the Acuert suborder, it has a natric horizon: accumulation of clay with a lot of exchangeable sodium, which disperses the clay and blocks the passage of water and roots.

What it means for farming

Fertile and with a lot of water retained, but difficult: they become waterlogged, when wet they become sticky and difficult to work with, and when dry they crack. They ask for tillage at the right time. They are the typical soil of much of Entre Ríos.

Where it is found

It does not appear on the national map; on the detailed maps it adds up to about 500.677 ha, across 11 districts.

ProvinceArea
Buenos Aires500.677 ha

Districts where it is most common

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

How productive it is

Land capability

VI
VII

class IV: 5% · class VI: 35% · class VII: 60%

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

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

El Tordillo · General Conesa · General Lavalle · Vieytes · General Madariaga · Mal Abrigo · Estacion Segurola · Arroyo Chico · Bahia Samborombon · Estancia La Victoria

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