Todi
Styles
Principal grape varieties
Terroir
Natural factors
- The soils of the production zone are predominantly hilly, at elevations ranging from 250 to 600 metres above sea level.
- The soils are medium-textured and tend toward the clayey, with a composition of 40.5% clay, 45.1% silt, and 14.4% sand, with no coarse fraction.
- The soils display an alkaline reaction with a pH of 7.58 and are rich in calcium carbonate at 21.6%, with a subangular blocky structure.
- Mean heat accumulation in the zone ranges from 1,700 to 1,900 degree-days according to the Amerine-Winkler index calculated from 1 April to 30 September.
- Mean annual rainfall is approximately 750–800 mm, with 25% to 35% of precipitation concentrated in the vegetative and productive season from April to September.
- Vineyards are generally planted on south- and south-east-facing slopes, in moderately well-ventilated sites that limit the onset of disease.
- The grape-production zone encompasses the planted areas within the communes of Todi, Massa Martana, Monte Castello di Vibio, and Collazzone. (via Wikipedia · CC BY-SA 4.0)
Human factors
- The name Grechetto may not derive from Greece, but rather from a medieval usage denoting wines with aromas similar to those from the eastern Mediterranean; its link to Greek grape varieties has been called into question by certain genetic studies.
- In 1825, Acerbi described a Greca grape with greenish-yellow small bunches and a pronounced pistil mark, a reference associated with the Grechetto G5 biotype.
- Pasqualoni in 1954 described the Todi biotype as a vigorous variety widespread throughout Umbria, with small clusters, moderate yields, and refined quality.
- Vineyards are trained to spur-cordon and Guyot systems, with vine spacing ranging from 2.5 m × 0.8 m up to 3 m × 1 m.
Product characteristics
- Grechetto from clone G5 shows a profile with a more pronounced floral and fruity character than that obtained from clone G109, along with citrus notes.
- The wine obtained from Grechetto G109 is distinguished above all by its colour, acidity, freshness, and capacity for ageing over time.
Terroir / wine link
- The calcium carbonate present in the soil ensures the correct ripening of the vine and excellent quantitative and qualitative yields, in conjunction with the viticultural techniques suited to the zone.
- The temperate climate, good diurnal temperature variation, and well-distributed rainfall that prevents water stress favour the correct development of the vine and a low incidence of disease.
Facts drawn from the specification's terroir-link section by automatic interpretation — see the source.
About this boundary
Area: the official production zone published by the regional geoportal (Umbria).
Sources
- eAmbrosia register (EU) — File number PDO-IT-A0849