Abstract
The specific conditions of the protected ground, the almost constant tomato culture without substitution of the substrate, the elevated temperature and humidity lead to the accumulation of a large number of pathogens of bacterial diseases, which limit the increase in yield of this crop. The aim of the work was to characterize the symptoms, determine the etiology of wet rot of tomatoes for growing in protected ground and propose measures to control the pathogen. The study was conducted by standard microbiological and phytopathological methods. The pathogenic properties of the isolates were studied on vegetative tomato plants using a suspension of bacterial cells with a titer of 107 CFU/ml. It was established that the defeat of tomato plants with soft bacterial rot in closed ground conditions prevails in the second half of the growing season. The development of the disease was 30‒34% for a prevalence of 45%. Diseases of tomato plants in greenhouses in the Kiev region of Ukraine are of bacterial origin, caused by the soft rot pathogen P. carotovorum subsp. carotovorum. Characteristic symptoms of wet tomato rot are discoloration, chlorosis and leaf necrosis, void stems, the appearance of depressed water-saturated areas in the stalk, accompanied by decay of the fetus. Effective control measures can be preventive and agricultural measures
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