Vernygora I. Potato wet bacterial rot and measures to restrict its development under the conditions of Ukraine's Polissya

Conducting the phytopathological examination at the basis of different forms of ownership enterprises of Ukraine's Polissya zone has been proved that most spread wet bacterial rot level was in Volyn region (4,7%). The most significant crop losses were observed at species susceptible to the bacteriosis: Teteriv (34,0%) and resistant to wet bacterial rot Slovjanka (2,5%). The experiments have proved that storing the yield the biggest quantity of infected tubers were observed at the example of Teteriv sample including 15% of infected tubers added to high quality tubers At the result of the investigation the peculiarities of marked strains: P110, P111, P115, P116 they were referred to the Pectobacterium carotovorum subsp. carotovorum. The additive character of the interaction between wet rot agents and the pathogenies of fungic origin: Fusarium oxysporum, Alternaria solani and Phytophthora infestans. The antagonistic peculiarities of Bacillus amyloliquefaciens bacterias have been determined at the process of joint bacterial cultivation of Pectobacterium and Bacillus amyloliquefaciens bacterias. It has also been proved the highest efficiency of the fungicide "Likar roslyn" impact on the decrease of wet bacterial rot development at the example of various potato species. It has been proved the most efficient is the method of infecting tubers with the injector with modified needle application. At the result of the experiment it has been substantiated that the relatively resistant are such potato species: Karlena, Podolyanka, Prolisok, Rosara, Dubravka, Levada and others.