Soils

Non humic granitic litholic soils (or derived from similar rocks) (Pg)

Soils not very evolved and formed from non calcareous rocks. Presenting a greyish to pale-greyish or even yellowish pale hue they possess a sandy texture and lack aggregates. They are usually acidic. Found mainly in Portalegre, Évora, Redondo and Reguengos.

Mediterranean quartz diorite derived greyish soils (Pmg)

Envolved soils formed from non calcareous rocks. Presenting a greyish or brown hue they possess a sandy loam to sandy texture and a weak fine-grained structure (or lacking aggregates altogether).  Ph ranges from low acidic to neutral. They prevail in the sub-regions of Redondo, Reguengos, Évora and Vidigueira.

Mediterranean schist or greywacke derived greyish soils (Px)

Evolved soils formed from non calcareous rocks. Presenting a greyish, brown or even yellowish-grey hue they possess a loam texture and a weak to moderate fine-grained structure. They usually have low acidic levels. They prevail in the regions of Redondo, Reguengos, Évora and Vidigueira.

Mediterranean red or yellowish soils derived from Rañas or from similar deposits(Sr)

Soils formed from non calcareous rocks. Presenting a reddish-brown or reddish-grey hue and a sandy loam to sandy clay loam texture. They have some (or even abundant) coarse sub-angular elements (quartz and quartzite) and a fine grainy weak or moderate structure. Found mainly in Reguengos and Granja-Amareleja.

Red calcareous soils (Vc)

Soils not very evolved and formed from calcareous rocks. They present a red or reddish-grey hue and a loam, sandy clay loam, or calcareous clay loam texture, sometimes with fragments of compacted limestone and with a fine-grained or moderate medium structure. Ph ranges from low alkaline to alkaline. Found mainly in Moura, Borba and Vidigueira.

Mediterranean red or yellow schist derived soils (Vx)

Soils formed from non calcareous rocks. They present a red or reddish-grey hue and possess a loam or clay loam texture and a weak to moderate fine-grained structure. They have low acidic levels. The deriving material consists in clay schist or non basic crystalllophyllian schist. They are amply abundant in Alentejo and found in practically all the sub-regions, mainly in Portalegre, Borba, Redondo, Reguengos, Vidigueira, Granja-Amareleja and Évora.