The effect of crown shape on vegetative potential of peach cultivars
2005
Radivojevic, D.,Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Velickovic, M.,Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Oparnica, C.,Poljoprivredni fakultet, Beograd - Zemun (Serbia)
The following four crown shapes of peach have been evaluated: veronese vase, veronese spindle, pal spindle and open vase. The studied shapes were formed on trees of three peach types: Redhaven, Cresthaven and Summerset. The planting distance was 5 m between the rows and 4 m in the row for all cultivars and crown shapes. The changes in parameters of vegetative potential as affected by different crown shapes were assessed over 1999-2000. The annual growth increment of the trunk cross-sectional area and the total length of scaffold branches, irrespective of the cultivar was the greatest in trees with open vase and the lowest in trees trained to pal spindle shape. The greatest growth increment of the cross-sectional area and the total length of scaffold branches were recorded in cv Redhaven. As opposed to shapes with central leader (veronese spindle and pal spindle) open vase has a problem with retaining vegetative activity at the crown base. Veronese vase is distinguished by evenly distributed fruiting branches in all crown parts. Cv Redhaven is well garnished with fruiting branches in all crown parts, whereas cv Summerset has an extremely low number of mixed branches in the lower crown half. In open training systems without the central leader (open vase and veronese vase) due to massive emergence of succory a greater wood removal occurs by winter pruning as compared to the central leader.
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