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ISHS Acta Horticulturae 169: International Workshop on Improvement of Sweet and Sour Cherry Varieties and Rootstocks

GROWTH AND YIELD OF SWEET CHERRY TREES WITH INTERSTEM

Authors:   Z.S. Grzyb, S.W. Zagaja, J. Zdyb
DOI:   10.17660/ActaHortic.1985.169.43
Abstract:
The influence of 15 various interstems: hybrids and cultivars of sour and sweet cherry, different types of P. fruticosa and cherry rootstocks used as Interstem (about 50 cm long) on the growth, healthfulness and cropping of two sweet cherries cvs. Van and Red Büttner was investigated. Trees of the same cv. grafted directly onto P. avium were used as control. It was found, that during the 7 years after planting the orchard, the growth vigor of Van cv. was significantly decreased by 3 interstems: Nefris x Ostheimer Weichsel, Schattenmorelle x Morello from Jaslo, F 442 cherry from Kentish. The other 7 interstems did not have influence on the size of trees. Growth vigor of red Büttner cv. was significantly limited by 5 interstems: Nefris x Ostheimer Weichsel, Northstar, P. fruticosa No 3 P. fruticosa No 9, Red Büttner x Bladorozowa. There was no effect of the other 10 tested interstems on the growth vigor of Red Buttner trees.

The trees healthfulness was examined twice during the vegetative period. Special attention was paid to gumosis symptoms. No symptoms of gumosis were found in the trees of both cvs. with interstem of P. fruticosa No.8. The strongest gumosis on the trunks and branches was observed on the trees with interstem of P. avium from Turkey.

Trees without and with interstems came into bearing in the third year after planting. Trees of Van cv. gave significantly higher cumulative yield for the first 5 years of bearing with following interstems: P. fruticosa No 8 and F12/1 when compared to the control. Trees of Red Büttner gave for the same period of bearing significantly higher yield than the control with interstems: Glaskirsche x Vladimirskaya, and P. fruticosa No 10.

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