Due to climate change, it is necessity to take into account the stressors affecting plant growth and development to ensure a high yield of winter wheat grain. The realization of the genetic potential of winter wheat productivity in critical periods can be achieved by improving the cultivation technology features used for this grain crop. The purpose of our research is to study the effect of seed treatment with the plant growth stimulator Vympel K and the spraying the plants with the growth stimulator Vempel-2 combined with microfertilizers Orakul on winter wheat productivity in Ukrainian Western Polessia. It is established that while cultivating winter wheat Astarta on typical slightly humic black soil typical, it is effective to supplement the technology with growth stimulants Vempel-K and Vympel-2 in combination with liquid microfertilizer Oracul colofermin LLC "Dolyna-Tsentr". It makes possible to increase the resistance to adverse environmental factors, reduce plant death during the growing season and has a positive effect on the formation of the main indicators of winter wheat crop structure. The investigation proves that treating seeds with growth stimulator Vympel-K (0,5 kg/t) and spraying crops with growth stimulator Vympel-2 (0,5 l/ha) at the 29th and 39th stages of organogenesis ensures obtaining the grain yield at the level of 7,03 t/ha, which is 7.7% more compared to the control. The highest productivity of winter wheat Astarta (7.48 t/ha) is provided by the use of growth stimulants Vympel-K (0.5 kg/t) to treat seed and Vympel-2 (0.5 l/ha) to spray with Orakul microfertilizer at the 29th and 39th stages of organogenesis. The grain yield proved to increase by 14.5% compared to the control. The prospects for further research should focus on the studying the effects of integrated using Orakul microfertilizer and growth stimulant Pennant on the quality of winter wheat grain
plant growth stimulator, winter wheat, micronutrient fertilizer, seed dressing, foliar nutrition, grain yield