PRELIMINARY RESULTS ON THE INFLUENCE OF SEEDLING AND CLONAL ROOTSTOCKS ON TREE GROWTH AND YIELD OF TWO PLUM CULTIVARS

The performance of two plum seedling rootstocks: P. cerasifera Ehrh. var. divaricata Led. and ‘Wangenheim Prune’ (P. domestica L.), and four clonal rootstocks: ‘Jaspi’, ‘GF 655/2’, ‘Ishtara’ and ’Saint Julien A’ grafted with two plum cultivars ‘Hanita’ and ‘Dąbrowice Prune’ were investigated for tree growth, yield and fruit weight.
The field experiment was established in the Central part of Poland on a podzolic soil used for fruit tree crops for at least 50 years.
Trees were planted in the spring of 2000 and spaced in rows of 2.5 m and 4.25 m between rows.
The trees grafted on P. divaricata seedlings were used as a control. ‘Wangenheim Prune’ seedlings and ‘Saint Julien A’ rootstocks significantly reduced the tree growth of both plum cultivars.
Growth of plum trees on the other three rootstocks ‘Jaspi’, ‘GF 655/2’ and ‘Isthara’ were similar to that of the control.
Yield was affected by the different rootstocks.
The ‘Ishtara’ rootstocks were the most productive, but the highest yield efficiency was recorded on the ‘Wangenheim Prune’ seedlings.
These rootstocks slightly reduced fruit weight.

VIII International Symposium on Canopy, Rootstocks and Environmental Physiology in Orchard Systems

Z.S. Grzyb, M. Sitarek

plum cultivar, ‘Hanita’, ‘Dąbrowice Prune’, growth, yield, seedlings, clonal rootstocks

https://doi.org/10.17660/ActaHortic.2007.732.39