TY JOUR TI Assessment of the nutritional value of various types of feed prepared from corn, depending on the level of chemicalization and soil cover of the Republic of Tatarstan KW soil cover KW nutrition background KW corn KW cornage KW silage KW flattened grain KW nutritional value of fodder KW fodder units JO Agrobiotechnologies and digital farming AU Yakhin, I.F. AU Gabitov, R.H. AU Sochneva, S.. AU Trofimov, N.. PY 2024 IS 2 PB Kazan state agrarian University