Published in Scientific Papers. Series B, Horticulture, Vol. LXVI, Issue 1
Written by Zsolt JAKAB-ILYEFALVI, Anca CHIOREAN
The growth responses of 'Lapins’ sweet cherry cultivar (Prunus avium L.) grafted on 'Gisela 5’ and 'Gisela 6’ rootstocks was evaluated in drip irrigation conditions in Bistrita Fruit Region, in Northern Transylvania Romania, during 2020-2021, in a high density field trial, trees were trained as spindle bush with 1250 trees/ha density. During the study the following parameters were evaluated, trunk cross section area, volume of the tree crown, leaf area, length of shoots, number of shoots, height of trees, leaf area/fruit, crop load, yield, fruit number/tree, average fruit size and main quality characteristics of the fruits. Preliminary data showed that trees grafted on 'Gisela 6’ when compared with 'Gisela 5’ proved to be more vigorous when considering trunk cross sectional area and canopy volume indicators. Data showed that generally in both rootstock combinations a high fruit number per tree was observed at 'Lapins’ cultivar and fruit size was largely a function of crop load and leaf area: fruit ratio. In order to obtain a good fruit size most probably, crop load of self fertile 'Lapins’ cherries on Gisela rootstocks must be regulated by different pruning treatments. Drip irrigation had a crucial influence on the vegetative development of the trees and completed the physiological need of plants mainly in critical summer drought periods.
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