TY JOUR TI METHODS FOR INCREASING THE PRODUCTIVITY OF DIRECT-SEEDING CROP ROTATION UNITS IN THE FOREST-STEPPE ZONE OF MIDDLE VOLGA REGION KW direct seeding KW intermediate cover crops KW mineral fertilizer rates KW spring rapeseed (Brassica napus) KW winter wheat (Triticum aestivum) KW productivity JO Agrobiotechnologies and digital farming AU Tojgildin, A.L. AU Toygil'dina, I.A. AU Chekalin, A.M. AU Ayupov, D.E. AU Kuzin, A.S. PY 2025 IS 4 PB Kazan state agrarian University