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Resume
The experiment was carried out in 2008—20‘l0 in a young sweet cherry orchard (Van and Bing cultivars) in the region of the town of Hissarya. In 2008 at the end of May and the beginning of June sudden yellowing and leaf abscission was observed in the strongly affected trees. Darker watery lesions with abundant resin flow were formed on the tree stems at 60 cm height above the Soil surface. Lesions could reach up the stem to the skeleton branch ramification. A large number of those trees died as early as the same vegetation period.
White bacterium was isolated from the collected samples. Pathogenicity tests were conducted and the resuits showed that the bacterium is pathogenic.