IMPROVEMENT OF PROPAGATION TECHNOLOGY OF HAZELNUT CULTIVARS IN THE CONDITIONS OF THE RIGHT-BANC FOREST-STEPPE ZONE OF UKRAINE

Abstract

The article is dedicated to the researches o f ecological and biological features o f hazelnut cultivars vegetative propagation by method o f vertical offsets laying. Their biometrical indices were comparatively described and technological processes for offsets production were selected. The ability o f yield increase for the hazelnut rooted vertical offsets o f commercial grades dependently on different rooting substrata application, cultivar features o f researched plants as well as presence o f wire rings for cording o f sprouts is scientifically justified and proved.The findings proved essential effect caused by substratum pattern to the hazelnut offsets rooting. The lowest rooting percentage was observed in the control variant — hilling with soil; the highest one — in the case o f sawdust application. The rest variants gave intermediate results.It was found out on the grounds o f the investigation carried out that the vertical offsets o f the hazelnut cultivars 'Dar Pavlenka' and 'Ukraina-50' hilled with the sawdust provided o f harwood and with use o f the copper wire rings placed in the lower part o f the stool plant's sprout demonstrated the maximum rhizogenetic ability and high biometrical indices.