Influence of biostimulants and biostimulating complexes on the growth and development of soybeans in the Western Forest-steppe of Ukraine

Goal. The choice of biocomplexes for providing crop’s maximal potential in the terms of organic farming. Methods. The biological preparations, stimulants, their combinations and systematic complexes were the objects of researches. The biotechnological researches methods used during the work. The preparations efficiency was determined by different consumption rates against fungi diseases. The records conducted as per approved techniques with experimental methods usage in phytopathology and plant protection. Results. The complex usage: Biomag Soybean 4.0 l/t + Biophosphoryn 2.0 l/t + PhytoDoctor1.0 l/t + Urozhay Start 0.1 l/t (the increased rate Biophosphoryn) showed the best results during the analysis of biological complexes for treating soybean seeds and their phytosynthetic abilities. The conducted analysis of different preparations showed that soybean vegetation indexes and plants resistance to diseases had clearly formed in dependence upon the combination of researched preparations. The best result of first researches seria have received by the complex: Biomag Soybean + extender (2.0 + 1.0 l/t) + Biophosphoryn (1.0 l/t) + Phytodoctor(1.0 l/t); treating at growing seed Gaubsin FORTE (1,5 l/ha);Uroshay Bor (1.5 l/ha), Aminostym (1.0 l/ha), Actarophyt (0,4—0,6 l/ha), FitoNiss (0.5 l/ ha), Urozhay Co-Mo(0.25 l/ha), Urozhay Co-Mo (0.35 l/ha). The highest indexes were received during the seeds complex usage: Biomag Soybean + Extender (2.0 + 1.0 l/t) + Biophosphorin (1.0 l/t) + Phytodoctor (1.0 l/t), treating at the growing: Gaubsin FORTE (1.5 l/ha); Urozhay Bor (1.5 l/ha), Biomag (11.0 l/ha); Actarophit (0.4—0.6 l/ha), BioMag (0,5 l/ ha), Urozhay Co-Mo (0.35 l/ha). Conclusions. Increasing the yield and reducing the manifestation of the complex of fungal diseases of soybeans can be achieved through the correct selection of a system of biofungicides and growth stimulants without the use of drugs of chemical origin.