The influence of biofungicide and chemical fungicides on the manifestation of diseases and the yield of soybeans

This study aims to improve the technology for protecting soybeans from fungal diseases based on new fungicides. The relevance of research is specified by a significant increase in area occupied and need protect crops diseases. experimental site located territory Oryol State Agrarian University (Lavrovo village Region, Russia). crop rotation grain-fallow, predecessor winter wheat. soil type dark gray forest medium loamy. Soil acidity 5.7. It has following content macronutrients: 11.5 mg/100 g P2O5, 10.9 K2O, 4.1% humus. Mezenka soybean was used, seeds 1st reproduction. Planting carried out first decades May 2019 2020. We used Maksim, KS protectant (Fludioxonil, 25 g/l). Fungicides Propuls, SE (Prothioconazole, 125 g/l, Fluopyram, g/l), Vintazh, ME (Difenoconazole, 65 Flutriafol, g/l) biofungicide Vitaplan, SP (Bacillus subtilis strain VKM-V-2604D, titer 1010 CFU/g Bacillus VKM-B-2605D, CFU/g) were treat plants at end June branching phase again two weeks later July budding phase. treatment with fungicide helped until ten days July. Two-fold Vitaplan chemical fungicides Propuls Vintazh had impact prevalence development biological effectiveness comparison higher complete formation beans - beginning ripening 9 15%, respectively. In control, yield 10.4% using 16.4% 17.9% Vintazh.