BOGOS ZERVA is a Crimean grape variety belonging to the ecogeographical group of Eastern and Black Sea wine varieties. It is characterized by a medium ripening period occurring in mid to late September. The leaves of this variety are medium-sized, rounded, five-lobed, and deeply cut, with a characteristic pubescence on the underside, which can be bristly-webby or felt-like. The flowers are hermaphroditic, which promotes good pollination and crop formation.
Bunches of Bogos Zerva are medium or quite large, cylindrical-conical, and dense. Berries are predominantly medium-sized, rounded or slightly flattened, greenish-yellow in color with a weak waxy bloom. The berry skin can vary from thin to medium strength with a bitter taste to thick and rough, affecting taste qualities. The pulp is juicy but sometimes spreading and poorly separates from seeds. The berry taste is simple, sweet, sometimes watery, and unbalanced.
Bush growth strength is average, shoot ripening is good, and yield varies from medium to high. The variety has medium resistance to fungal diseases such as oidium and mildew, but is less resistant to gray mold, and berries may mold in wet weather. The sugar content of the berry juice is 18-20 g/100 cm3, and acidity is 5-6 g/dm3. Bogos Zerva is used primarily for the production of ordinary strong wines, as well as in mixtures with other varieties to create port wine type wines.
