Bonarda Piemontese, now officially listed simply as Bonarda but also known as Bonarda di Chieri and Bonarda del Monferrato is a red Italian wine grape variety that is grown in the northwestern region of Piedmont. Prior to the phylloxera epidemic of the 19th century, Bonarda was speculated to have accounted for 30% of the plantings in Piedmont but today is only found in scattering plantings along the left bank of the Tanaro river near Govone. In the mid 1990s, the grape experience a slight revival as Piedmontese producer sought to add more aromatics to their Barbera wines by blending in Bonarda.
It is often confused with Croatina or the ' Uva Rara , which are quite distinct varieties. Grown mainly in the provinces of Asti and Turin, but also in the Pinerolo, in the Susa Valley and the Canavese. The name was first used in 1799 by Count Nuvolone to indicate a variety of Turin hills. In 1825 he described the bitterness of the presence in Alexandria, while a Rovasenda, in 1877, is the first to give a precise description emphasizing the difference from false Bonardi.
Viticulture and winemaking
Ampelographers believe there are two distinct clones of Bonarda Piemontese-Bonarda di Gattinara from the Vercelli hills near Gattinara and Bonarda Novarese from the Novara hills near Ghemme.
Environmental and cultural characteristics and needs : It has greenish-white bud with apical tract entirely red. The leaf is medium sized, wedge-pentagonal, wider than long, often without lobes, but sometimes there's three or five. The bunch is medium-sized or large, slightly loose, with two or three wings, berry medium-small, elliptic, blue-black, with plenty of bloom on the skin. He has remarkable vigor and good fertility, with a few rare cases of millerandage . It prefers mixed pruning (Guyot), but also adapts to the short one. The best soils are clay soils, not very fertile.
Diseases and adversity : he has good tolerance to ' powdery mildew and the little downy . Fair tolerance to the moth and rot . E 'sensitive to frost.
Follows, by region, a list of all DOC and DOCG is allowed where the use of this vine
- Albugnano: max. 100% (as Rose, alone or in combination with Uva di Troia and Aglianico)
- Boca: 0 to 40%
- Bramaterra: 0 to 20%
- Canavese: 60 to 100%
- Collina Torinese: 85 to 100%
- Coste della Sesia: min. 50%
- Monferrato: min. 85% (in the "Claret", alone or with other grapes)
- Piedmont: min. 85% with mention of the vine
- Pinerolo: min. 50% (alone or with other grapes), min. 85% with mention of the vine)
Emilia Romagna :
- Colli di Parma: 15 ÷ 40%
Despite the similarities of their synonyms, the grape is not related to Charbono/Corbeau in Argentina nor the Croatina grape, which make tannic wines similar to Piedmont's Dolcetto.