Substantiation of the influence of agrophysical factors and climatic conditions on the yield and quality of winter wheat in the Lower Volga region

The article substantiates the influence of agrophysical factors and climatic conditions on yield protein gluten content in winter wheat grain. Agrophysical factors, soil moisture during sowing period, tillering phase for various methods basic tillage years Lower Volga region are analyzed. data obtained three (2018–2020) show that a small (by 10–12 cm) black fallow reduces its by 0.25 t/ha (10.6%), 0.4%, 0.3%. Multiple regression calculations based coefficient multiple determinations showed grain was 98% dependent studied terms this indicator 63%, - 74%. A complete correlation analysis dependence yield, most significant exerted (R2 = 0.83) before 0.79), April June 0.77). mainly determined (r 0.85 r 0.81) amount precipitation growing season 0.84 0.73).