PHYTOSANITARY MONITORING OF HERBACEOUS PEONIES DISEASES AND RESEARCH ON INCREASING THEIR RESISTANCE IN THE BOTANICAL GARDEN OF PETER THE GREAT

Significant harm to plants growing in the Botanical Garden of Peter the Great is caused by pathogens. Peonies are also affected by a large number of pathogens. Phytosanitary monitoring of peony diseases was carried out, and the most affected plant cultivars were identified. In order to protect these plants, the staffs of the institute’s garden have been carrying out a long-term significant work. This paper shows the results of research that includes the search for new substances, preparations and agrotechnical measures that could protect valuable plants and increase their resistance to the most aggressive pathogens. In our work, we used the following plant growth regulators: Immunocitophyte, Ecofus, Epin-extra, Ecogel, Siliplant, and biofungicide Vitaplan. According to the experimental treatments carried out, preparations were identified that significantly reduce the incidence of various peony diseases and allow plants to actively develop, providing timely and abundant flowering throughout the growing season.