TY JOUR TI CHANGES IN SOIL AGROCHEMICAL PARAMETERS ACROSS WINTER RYE GROWTH PHASES DEPENDING ON THE USE OF MINERAL FERTILIZERS KW sod-podzolic soil KW mobile phosphorus KW exchangeable potassium KW mineral nitrogen KW growth phases KW winter rye (Secale cereale) JO Agrobiotechnologies and digital farming AU Shishkov, D.G. AU Olekhov, V.R. AU Safiullina, D.R. PY 2025 IS 4 PB Kazan state agrarian University