Izvorni znanstveni članak
https://doi.org/10.33128/pc.21.3-4.2
Growth and yield of hazelnut varieties on the rootstock Corylus colurna and their own root on ecological condition of the Istria
Ivo Miljković
; Čazmanska 2/III, Zagreb, Hrvatska
Sažetak
Research on the vegetative growth and yield of the varieties of the hazelnut was carried out in two experimental orchards in Istria. In the first experimental orchard, the research included the varieties: Fertile de Coutard, Cosford, Gunslebert, Istarski duguljasti, Merveille de Bollwiller, Magonca and Tonda Gentile Romana on the rootstock Corylus colurna. Planting is at distances 5 x 5 m (400 trees / ha) with training form of open vase. All varieties achieved good vegetative development at the end of the 6th vegetation. Greater development than the other 6 varieties, has achieved the Fertile de Coutard variety. The difference is highly significant. Equal vegetative development has been achieved by the other 6 varieties. The highest yield has the Cosford variety, followed by Fertile de Coutard, Istarski duguljasti, Tonda Gentile Romana, Magonca and Gunslebert, and the smallest variety Merveille de Bollwiller. In the second experimental orchard, the vegetative development and yield of the varieties were investigated: Istarski duguljasti, Tonda Gentile Romana and Fertile de Coutard grown on their own root in the form of bushy vases with a distance of 4.5 x 4.5 m (493 trees / ha). At the end of the 6th vegetation all varieties achieved good development. Fertile de Coutard and Tonda Gentile Romana have grown to a greater extent than the Istrian duguljasti. Equal yield was obtained for varieties on its own root. By comparing the vegetative development of trees on their own root and on the rootstock of Corylus colurna it was found that all three varieties on the rootstock of Corylus colurna achieved significantly greater vegetative development. By comparing the genotype of the Istarski duguljasti, Tonda Romana and Fertile de Coutard on their own root and the same varieties on the rootstock Corylus colurna, it was found that all 3 varieties yielded much greater yield on the substrate of Corylus colurna. The research included the influence of the rootstock on the chemical composition of the leaves of the varieties: Fertile de Coutard, Istarski duguljasti and Tonda Gentile Romana. An analysis of the cause of premature dropping of fruits was carried out.
Ključne riječi
hazelnut; variety; rootstock; growth; yield; leaves; chemical analysis
Hrčak ID:
199790
URI
Datum izdavanja:
20.4.2018.
Posjeta: 1.530 *