The intensity of bacterial spot (Xanthomonas arboricola pv. pruni) on some apricot cultivars evaluated with the WinFOLIA system

This study presents 2021-2022 research results on the sensitivity of 28 apricot cultivars to bacterial spot (Xanthomonas arboricola pv. pruni) as influenced by the planting system or rootstock.
A new apricot plot was planted in 2017 in the Experimental Field of the Faculty of Horticulture in Bucharest, with Romanian and foreign cultivars grafted on Myrobalan 29C, Saint Julien A, and GF677 rootstocks.
An integrated orchard technology was applied.
The planting distances varied from 4.5×1.5 m to 3.5×2.0 m while the trees were formed with Parallel U and Trident canopies.
Leaves were collected at the end of the growing season (September-October), and the incidence of bacterial spot was evaluated using the WinFOLIA system at the same time as the morphologic parameters.
The results presented the influence of the cultivar and the rootstock for some experimental variants on the disease severity.
The WinFOLIA system proved to be a feasible tool in this type of evaluation, providing valuable information while not being time-consuming.

V Balkan Symposium on Fruit Growing

I. Al-Suwaid, C.A. Mihai, A.C. Butcaru, F. Stănică

Trident, Parallel-U, Myrobalan 29C, Saint Julien A, GF677

https://doi.org/10.17660/ActaHortic.2026.1449.44