BIANCHERA – Italian PGI (Protected Geographic Origin)
Bianchera is a cultivar native to San Dorlingo della Valle (a municipality in the Province of Trieste) and is part of the Friuli and Istrian tradition.
Leathery plant. It has a medium resistance to cold and a high resistance to bora. It is perfect for the Istrian climate. It has an erect growth habit, and its fruit-bearing branches are usually straight; its foliage is dense and, when no pruning is carried out, it tends to be irregular. It is very sensitive to bird’s eye spot disease, which, depending on the year, can compromise the tree’s productivity. It is very sensitive to the olive fruit fly’s early attacks as well (July). It doesn’t stand flat heavy and humid soils and prefers loose soils. One can get the best results out of Bianchera if it’s placed in areas with mild and windy climate, such as hills or coastal zones. Olive-blossoms are of a medium length and have a medium number of flowers. This is a self-sterile variety, and in its native lands it is pollinated by Rosulja or Rossignola di Parenza and by Buga, Busa or Tonda di Villa. The Leccino or Pendolino varieties are good substitutes as well. It has a medium starting age of fructification and a good and constant fructification. Drupes, which weight about 4 g, have a quite late veraison, but they are quite resistant to detachment,in case of bora.
It has a quite good yield (around 20%). Its oil, rich in polyphenols and low in acidity, has an intensely fruity scent, quite bitter and spicy, and has herby and raw artichoke notes. Pure Bianchera oil is usually bitter, because of its high levels of hydroxytyrosol.