Commercial and ampelographic characteristics of autochthonous grape varieties of Kastav area

Unazad nekoliko godina na području grada Kastva nekolicina proizvođača grožđa i vina u suradnji sa znanstvenim institucijama i uz potporu lokalnih jedinica uprave i samouprave nastoji obnoviti vinogradarsku proizvodnju temeljenu na autohtonom sortimentu. Prvi korak već je napravljen identifikacijom nekoliko autohtonih sortata. Sorte Jarbola, Verdić, Mejsko belo, Divjaka i Brajkovac su nakon identifikacije razmnožene i posađene u zasad manjim nasadima lokalnih vinogradara. Cilj ovog rada bio je utvrditi osnovne gospodarske i ampelografske karakteristike navedenih sorata u proizvodnom nasadu lokalnih proizvođača. Analizom podataka utvrđen je broj grozdova po trsu, prinos po trsu, mehanički sastav grozda i kemijski sastav mošta. Na taj način utvrđene su osnovne razlike između sorata kao i gospodarski potencijal svake sorte. Sorta Verdić ima dimenzijama i masom najveći grozd, dok sorta Brajkovac dimenzijama i masom ima najmanji grozd. Sorta Jarbola ima najveću masu bobice i najveći udio mesa u masi grozda te izrazito veliki broj grozdova po trsu. Sorta Divjaka se odlikuje visokom rodnošću te najmanjom masom bobica. Sorte Mejsko belo i Brajkovac pokazale su se, zbog visokog sadržaja šećera, kao sorte s najboljim kvalitativnim potencijalom u promatranoj godini istraživanja.Several years ago in the city area of Kastav several grape and wine producers in cooperation with scientific institutions and local-government tried to restore the grape production based on autochthonous grapevine varieties. The first step has already been done by identifying several indigenous varieties. After the identification, Verdić, Mejsko belo, Divjaka, Jarbola and Brajkovac variety were propagated and planted in new vineyards of local producers. The aim of this study was to determine the basic yeald and ampelographic characteristics of mentioned varieties in vineyards of local grepe and wine producers in Kastav. Analysis of the data is determined by the number of bunches per vine, yield per vine, the chemical composition of must and mechanical composition of the cluster and berry. This research set out the basic differences between varieties and economic potential of each variety. Variety Verdić have the largest and variety Brajkovac the smallest dimensions and mass of the cluster. Variety Jarbola have the largest berry mass and the highest proportion of meat in the cluster mass. Also it has a very large number of clusters per vine. The Divjaka variety is distinguished by its high yield-set potential and the smallest mass of berry. The varieties of Mejsko Belo and Brajkovac have higher sugar content and proved to be potentially best-quality varieties in this year of research