TY JOUR TI The effectiveness of fertilizers with sulfur in the cultivation of soybeans on zonal soils of the Central Chernozem region KW zonal soils of the CCR KW mobile sulfur KW soybean productivity KW fertilizers with sulfur KW protein KW vegetable fat JO INTERNATIONAL AGRICULTURAL JOURNAL AU Levshakov, L.V. AU Lazarev, V.I. PY 2024 IS 0 PB Electronic science