TY JOUR TI Variability of agrochemical indicators and spring wheat yield in Vysokogorskiy district of the Republic of Tatarstan. Agrobiotechnologies and digital agriculture KW mobile phosphorus KW mobile potassium KW intensification of agriculture KW fertility KW productivity KW spring wheat JO Agrobiotechnologies and digital farming AU Gaffarova, L.G. AU Smirnova, E.V. AU Matveeva, A.I. PY 2025 IS 4 PB Kazan state agrarian University