Abstract
This paper shows the positive dynamics of the use of various biological products in the cultivation of winter wheat against the background of the use of mineral fertilizers and their impact on the yield growth and development of plants. The experiment was laid on the experimental field of the Ivanovo state agricultural Academy. The soil is sod-podzolic medium loamy. Agrochemical analysis of the soil of the experimental site contains 1.9% humus in the soil, 190 mg/kg mobile phosphorus and 180 mg/kg mobile potassium, pH -5.7. The inoculation of winter wheat seeds by biological products Bisoltan and Extrasol was performed on the day of sowing. Mineral fertilizers in the form of ammonium nitrate, double superphosphate and potassium chloride were applied according to the scheme and applied in the spring before sowing, then cultivation was carried out. According to the research results, it was found that the combined use of biologics and mineral fertilizers allowed to obtain a significant increase in yield, and there was also a positive trend in the development of winter wheat plants.
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