TY JOUR TI CHEMICAL COMPOSITION OF SOIL AND PLANTS WHEN USING VERMICOMPOST FOR POTATOES ON MEADOW-CHERNOZEM SOIL OF THE OMSK REGION KW potatoes KW nutrients KW efficiency KW vermicompost KW productivity KW maintenance KW removal JO Vestnik of Omsk SAU AU KORMIN, V.P. PY 2024 IS 53 PB FSBEI HE Omsk SAU