P. Iliev, A. Stoev, N. Petrov
The compulsory growing of the plum cultivar ‘Stanley’ in Bulgaria was a result of significant losses, caused by sharka disease on plums (Plum pox virus, PPV). The share of this cultivar tolerant to PPV in newly planted orchards approached 100% by the end of the 20th century. Such monoculturing led to new problems concerning not only commercial diversity and picking organization but also successful plant protection of the orchards where it increased the importance of fungal pathogens such as Monilia fructigena.
Therefore, in the first decade of the 21st century, comparative research directed to the estimation of complex resistance against the above-mentioned pathogens was undertaken. It included regular seasonal observations for manifestations of sharka and brown rot (Monilia fructigena) on the experimental plots near the town of Dryanovo. Leaf samples were collected and tested for PPV. The results of the research showed that, besides ‘Stanley’, the cultivars ‘Čačanska Najbolja’, ‘Californian blue’, ‘Kishinevskaya rannaya’ and ‘Vengerka krupnaya sladkaya’ could be also grown in industrial plum orchards, if cultivated in accordance with good horticultural practices. They should be regularly monitored for development of monilioses and subjected to seasonal fungicide treatments.
Iliev, P., Stoev, A. and Petrov, N. (2011). BETWEEN SHARKA AND MONILIA. Acta Hortic. 899, 171-174
DOI: 10.17660/ActaHortic.2011.899.23
sharka, Plum pox virus, Monilia fructigena

Acta Horticulturae