Influence of different vine crop load on some quantitative and qualitative parameters of cv. Cabernet sauvignon (Vitis viniefera L.) in vinegrowing district Benkovac-Stankovci

U Nadinskom blatu 2020. godine istraživan je utjecaj različitih opterećenja trsa na kvantitativne i kvalitativne parametre sorte Cabernet sauvignon. Zaključeno je sljedeće: najveće opterećenje od 12 pupova po trsu rezultiralo je urodom od (5007 kg/ha) dok je najmanji urod zabilježen kod opterećenja od 8 pupova čiji urod je bio niži za 26,33% . Najviši sadržaj ukupne topive suhe tvari u moštu zabilježen je kod tretmana A2 s opterećenjem od 10 pupova (21,3° Brix-a) dok su preostala dva tretmana ostvarila istu vrijednost sadržaja ukupne topive suhe tvari mošta od 21°Brix-a. Ukupna kiselost mošta nije se značajno mijenjala promjenom opterećenja trsa, no zamijećen je trend opadanja kiselosti sa smanjenjem opterećenja. Vrijednosti ukupne kiselosti kod najvećeg opterećenja A1 iznosila je 4,75 zatim 4,6 kod opterećenja A2, dok je kod najmanje opterećenog tretmana A3 iznosilo 4,3 g/l. Najviši pH zabilježen je kod tretmana od 10 ostavljenih pupova odnosno A2 i iznosilo je (3,39), dok je pH tretmana s najmanjim opterećenjem A3 iznosio 3,08. Razlike za realni aciditet mošta nisu bile značajne. Statistički značajne razlike nisu zabilježeni ni u sadržaju ukupnih polifenola i antocijana u pokožici grožđa između tretmana.The experiment was set up in Nadinsko blato in 2020, and different bud loads on Cabernet sauvignon varieties were observed. The aim of the study was to determine how a different load affects yield and some qualitative characteristics (must sugar content, pH, acidity, total phenolic and anthocyanin content). It was concluded that the highest load of 12 buds per vine gave a yield of (5007kg / ha) while the lowest yield had the lowest load of 8 buds whose yield was lower by 26.33%. The highest total soluble solid content in the grape juice was recorded in the A2 treatment with a load of 10 buds (21.3 ° Brix) while the remaining two treatments achieved the same value of the total soluble solid content in the grape juice of 21 ° Brix. The total acidity of the grape juice was not significant with the change of treatment. However, a trend of decreasing acidity with decreasing load was observed. The values of total acidity at the highest load A1 were 4.75, then 4.6 at the load A2, while at the least loaded treatment A3 was 4.3 g/l. The highest pH was recorded in the treatment of 10 left buds or A2 and was 3.39, while the pH treatment with the lowest load A3 was 3.08. The differences for the real acidity of the grape juice were not significant. Also there were no statistically significant differences observed in the content of polyphenols and anthocyanins in the grape skin between treatments