EVALUATION OF PRECOCIOUS DECLINE OF YOUNG APRICOT ORCHARDS IN THE CZECH REPUBLIC

In 2009-2010, commercial and experimental apricot orchards were screened visually for occurrence of the European stone fruit yellows (ESFY), precocious decline of apricots (apoplexy) and Sharka virus (Plum pox virus). Eleven cultivars were evaluated (‘Goldrich’, ‘Aurora’, ‘Pincot’, ‘Silvercot’, ‘Tardicot’, ‘Hargrand’, ‘Bergeron’, ‘Orange red’, ‘Leskora’, ‘Sylred’ and ‘Kioto’) in commercial and experimental orchards and 4 rootstocks (Wangenheim, Montclare, Myrobalan and Waxwa). Moreover, disease occurence was studied on 3 cultivars (‘Aurora’, ‘Pincot’, ‘Goldrich’), which were planted in a different year, namely in 2003 and 2008.
In total, in both types of orchards, precocious apricot decline occurred most frequently (10.70% trees); on the other hand, the tested set was least affected by the symptoms of Plum pox virus (0.45% trees). In the commercial orchards, there was approx. by 2% higher occurence of diseases than in the experimental orchards.
In total, the most susceptible to pathogens was the ‘Bergeron’ cultivar (26.24% trees) and the Myrobalan rootstock (13.13% trees).

XV International Symposium on Apricot Breeding and Culture

B. Krška, K. Gogolková, I. Ondrášek, T. Nečas

apricot, apoplexy, European stone fruit yellow, Plum pox virus

https://doi.org/10.17660/ActaHortic.2012.966.27