Regulation of phytopathogenic background at use of biological preparations in agro-ecosystems of potato and in conditions of its storage

Abstract

The purpose. To determine the role of biological preparation Planriz and its compositions with biological preparations Diazofit and Fosfoenterin in regulation of phytopathogenic background in agro-ecosystems of potato and in conditions of its storage. Methods. Field, laboratory (microbiological, biochemical, phytopathologic), mathematical statistics. Results. Results of researches in effect of biological preparation Planriz on the basis of growth-stimulating bacteria Pseudomonas fluorescens AP-33 together with Diazofit (nitrogen-fixing bacteria Agrobacterium radiobacter 204) and Fosfoenterin (phosphate-mobilizing bacteria Enterobacter nimipressuralis 32-3) on regulation of phytopathogenic background of microorganisms of mycological and bacterial etiologies in agro-ecosystems of potato and during its storage are brought. It is proved that indicated biological preparations are the important biotic factor in regulation of phytopathogenic background at growing and storage of potato. They stipulate the induced resistance of plants of potato to causal organisms of diseases, heightening exit of standard part of potato, essential decrease of sick rate of tubers at storage. It is fixed that joint application of biological preparation Planriz and fungicide Ridomil Gold stipulates effective control of phytopathogenic microbiota in agro-ecosystems of potato. Conclusions. Biological preparations Planriz, Diazofit and Fosfoenterin (on the basis of bacteria with different multifunctional action P. fluorescens AP-33, A. radiobacter 204 and E. nimipressuralis 32-3 accordingly) are characterized by high performance in regulation of phytopathogenic microbiota in agro-ecosystems of potato in conditions of Western Ukraine and during storage of tubers, promote level recession of biological pollution of agroecosystems, potential bioecological risks in agroecosystems, and increase of quality of planting stock of potato.