Fruit growing
and viticulture of South Russia
Egorova Zinaida
Articles in journal: (total 1)
The losses of crop production during storage depend on variety characteristics, the system of protection against vermins and diseases, terms and methods of harvesting, commodity processing and storage preparation methods and are associated with physiological, biochemical and microbiological processes occurring during storage. In connection with this, the current direction of research is the development, modification and improvement of methods for managing the biochemical and microbiological processes of long-term storage of crop production. Research has been carried out in the field of biological control of phytopathogens causative agents of carrot diseases using strains of Bacillus subtilis. It is shown that the most active in relation to the test set of pathogens characteristic for carrots in vitro experiments were strains of Bacillus subtilis IPM 215 and VKM B-2605D. The dynamics of populations of phytopathogens and antagonist strains in the sections of carrot roots was studied. It is revealed that the rate of growth of the Bacillus subtilis population in the first stage of storage exceeds the growth rate of the populations Alternaria radicina and Erwinia carotovora. After three days of storage, the growth dynamics of Bacillus subtilis decreases, which indicates the expediency of processing root crops with Bacillus subtilis preparations, which, due to more intensive growth, creates the competition in the struggle for nutrients during the first stage of storage. In addition, the products of the life of Bacillus subtilis are effective inhibitors of phytopathogens. As a result of carried out research it is established that the treatment of root crops of Bacillus subtilis influences the degree of development of diseases caused by Alternaria radicina and Erwinia carotovora that allows to consider the studied strains of Bacillus subtilis as promising for the biological control of diseases caused by phytopathogenic microorganisms during storage of root crops of carrots.