Home – Home – Jornals – Contemporary Problems of Ecology 2002 number 3

The influence of Trichoderma asperellum, Bacullus subtilis and Pseudomonas fluorescence strains promising for biocontrol of vascular mycosis of seedlings of coniferous plants, on the biological activity and structure of soil microbiocenosis of forest nursery soil was studied. It has been established that the use of antagonists decreases the total abundance of microflora only up to the moment of formation of the root zone, limiting the development of phytopathogenic fungi. Further on, the introduced biological agents change the structure of the microbiocenosis, contributing to the increase of abundance of sporeless bacteria and to limitation of the abundance of phytopathogens.