Soil order

Andisol

Soil formed on volcanic ash: light, porous, with a great capacity to retain water and with minerals that fix phosphorus.

What it means for farming

Good physical and forest fitness; the added phosphorus is retained and yields less than expected. Patagonian mountain range.

Andisoles on the maps

No soil survey map in the country lists it.

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