Calcareous soil | Defined by Ian D’Agata (2019, p337 as any soil with high calcium and magnesium carbonate concentrations, adding that such soils are usually alkaline with very good drainage (unless the clay content is high), and may be low in phosphorus.

Bibliography

Dr Ian d’Agata, Native Wine Grapes of Italy (University of California Press, 2014).

Dr Ian d’Agata, Native Wine Grape Terroirs of Italy (University of California Press, 2019), p337.