Ferralsol

A ferralsol (FR) can be defined through :

• a ferralic horizon at some depth between 25 and 200 cm from the soil surface

and :

• no nitic horizon within 100 cm from the soil surface

and :

• no layer fulfilling the requirements of an argic horizon and which would have in the upper 30 cm, 10 percent or more water-dispersible clay (unless the soil material has geric properties or more than 1.4 percent organic carbon)

Possible qualifiers

For each RSG, there are some possible prefix and suffix qualifiers :

Prefix qualifiers		Suffix qualifiers
Gibbsic Posic Geric Vetic Folic Technic Andic Fractiplinthic Petroplinthic Pisoplinthic Plinthic Mollic Acric Lixic Umbric Haplic		Sombric Manganiferric Ferric Colluvic Humic Alumic Dystric Eutric Ruptic Oxyaquic Densic Arenic Siltic Clayic Rhodic Xanthic Transportic Novic

Source

• The FAO website