One of the factors of stabilization and successful forage production in Russia is to expand the species and varietal diversity of forage crops, in particular by increasing the acreage of winter vetch, as well as cultivation, creation of its involvement multicomponent mixtures (agrophytocenoses). The object of the research were single-species (rye, wheat, triticale) and mixed agrophytocenoses created on their basis with the participation of winter vetch being laid on two levels of mineral fertilizers: Р30К30 (basic application) + N34 (tillering in the spring) and Р30К30 (basic application) + N68 (tillering in the spring). Agrophytocenosis with winter vetch produced at both levels of mineral fertilizer the highest value of green mass 29,4–30,7 and 30,5–31,7 t/ha, and as a result the maximum productivity of: dry weight (6,6–8,0 t/ha), fodder units (3,74–4,67 thousand/ha), digestible protein (0,96–1,35 t/ha). Nitrate in green feed, regardless of the level of fertilizer, was below the maximum allowable concentrations. The amount of produced feed grain depended on the type agrophytocenosis and the level of mineral fertilizers. The highest grain productivity among single-species agrobiocenoses, on the background making N34P30K30, provided winter rye 4,10 t/ha. Against the background of making N68P30K30, winter triticale provided the greatest productivity – 4,75 t/ha. Mixed cereals agrophytocenoses show greater grain yield than their constituent components of the culture cultivated in a pure form. Higher productivity of mixed agrophytocenoses, compared with single-species, was the result of the efficient use of environmental resources by plants, less lodging and disease resistance. The highest amount of net income and the lower cost of a kilogram of feed grain produced on the background of mineral fertilizers N68P30K30. The ternary mixed cereal agrophytocenoses (ratio crops in the seed mixture – winter triticale (2–2,5) + winter wheat (2–2,5) + winter rye (1–2)) gave the largest amount of coarse grains (5,1–5,2 t/ha) with the lowest cost (from 5,5 to 6,0 rubles per kilogram) and the highest level of profitability – 86,3–93,5 %. Thus, the cultivation of winter mixed agrophytocenosis simulated with wiki, triticale, wheat and rye is an affordable way of producing high yields (26–31 t/ha) of green mass. Grain productivity in such agrophytocenoses reaches 4,8–5,5 t/ha, with the level of profitability of 86–93 %. Provision of feed unit obtained coarse grains digestible protein up to 96 grams, that is the value is close to the physiological norm.