Originated from a cross of Dirksen Thornless x Black Satin
Plants are thornless
Bushes have erect canes
Fruit weight is 9 g
Berries have a conical shape
Fruiting habit - floricane fruiting (summer-bearing)
Productivity is 13 kg per plant
Soluble solids - 9.7%
Acidity - 1.15%
Cold hardiness is excellent
Country of origin - Serbia
Current status - cultivated (actual)
Čačanska bestrna is vigorous plant. It produces 4−5 strong thornless canes, curved from the middle, with short internodes. Primocanes are developing from the base of shoots. It is high yielding cultivar with yields over 28000 kg/ha even in an extensive growing conditions. It is resistant to fungal disease, that causes yellow rust of leaves and shoots. In many years of trials very rare damages caused by the influence of low winter temperatures have been reported.
Berries are very big, shiny black, firm, long and have cylindrical shape. Average berry weight is about 9 g, while some fruits reach 15 g. Fruits of Čačanska bestrna are very sweet and aromatic. Čačanska bestrna starts vegetation mid-early and flower mid-late. It has a shorter ripening period so that all fruit ripe well. Easy to peak, and harvesting should be performed in a timely manner. It is suitable for fresh market, freezing and processing.
In compared trials with blackberries Black Satin, Thornfree and Dirksen Thornless, carried out in different environmental conditions, Čačanska bestrna has shown remarkable results in terms of yield and fruit quality, as well as to disease resistance and winter frosts.