Soil great group

Haploborol

Of the Borol 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..

Haploborol 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 Haplocriol.

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.
SuborderBorolMolisol cold climate.
Great groupHaploborolWithin the Borol 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..

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
Sandy loam
Most common drainage
Moderate
Typical effective depth
100 cm

Where it is found

According to the 1:500.000 national map, it covers about 4.388.451 ha, spread over 14 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
Santa Cruz2.915.573 ha
Chubut1.228.287 ha
TIERRA DEL FUEGO E ISLAS MALVINAS244.591 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 51.5 (average); half of the units fall between 45 and 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

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