Application of Biopreparations for Growing Seedlings of Philadelphus coronarius L. in the Southern Forest-Steppe of the Omsk Region

Mock orange (Philadelphus coronarius L.) is a promising flowering shrub for use in green construction. In the Omsk region, this species is not widespread due to the lack of high-quality planting material. However, its decorative qualities, including abundant flowering, exquisite aroma and resistance to adverse climatic conditions, make it a valuable element of landscape design. For the successful introduction of mock orange into green spaces, it is necessary to establish the production of high-quality planting material adapted to local conditions. This will not only expand the range of ornamental plants, but also increase the aesthetic appeal of urban areas. In addition, mock orange can become an important component in the creation of sustainable ecosystems, contributing to the improvement of the microclimate and biodiversity. The use of chemical stimulants in the propagation of ornamental plants carries a pesticide load on the environment. In this regard, we studied the effect of biological preparations on the process of rhizogenesis of green cuttings and planting material of mock orange during propagation. The studies were conducted in 2021-2024 on the territory of the educational and scientific laboratory of perennial crops "Garden named after A.D. Kizyurin" (Omsk) using the generally accepted method of propagating woody plants by green cuttings. The rooting and reproductive parameters of green cuttings and cutting seedlings of mock orange were positively and consistently influenced by the preparations Azolen, Elena and Trichodermin.