After four days, all infected potato tuber samples began to show the symptoms of the disease. On day 14 all contaminated samples had been covered by visible rings with black lines from the middle toward the edges of the discs. In the variety of Picasso, the symptoms occupied 50% - 80% of the tubers in 12 days (Table 2). This variety is grown in all regions of Kyrgyzstan and our results have shown that this pathogen is widespread in these areas. In control samples of the disease, symptoms were not observed. As results have shown, the potato tubers of the Picasso variety were more damaged by an artificial infection of E. carotovora ssp. carotovora in the short-term than other varieties (Figure 1). Therefore, this variety is more sensitive and susceptible to the disease. In addition to potato tuber, this pathogen also infected the carrots tubers (Figure 2). As a result of ar- tificial inoculation five isolates were chosen, three isolates (EcPo1, EcPo2, and Eco3) were highly pathogenic, while two isolates (Eco4 and Eco5) were weakly pathogenic.