The effect of soil treatment in combination with fertilizer and herbicide application on yield and quality of soybean seeds and economic efficiency

We studied the peculiarities of production process of soybean and its dependence on the methods of the primary soil treatment and chemicals in 2012-2018. We conducted our researches on typical black soil in the stationary field experiment of the Tambov Research Institute of Agriculture in field crop rotation: black fallow - winter wheat - soybean - barley. We compared five methods of the primary soil treatment: tillage on a depth 25-27 cm (control); surface treatment on a depth 10-12 cm and beardless plowing on a depth 25-27 cm (saving technologies) under surface and beardless treatments in the rotation; tillage on a depth 25-27 cm under the beardless plowing on a depth 20-22 cm and tillage after the surface treatment on a depth 10-12 cm in rotation. A level of mineral nutrition included three variants: without fertilizers, N30P30K30 and N60P60K60 under the primary soil treatment, manual. Plant protection consisted of two levels: seed treatment (Skarlet, ME, 0...