TY JOUR TI Quantitative and qualitative indicators of different potato varieties depending on the use of the biological preparation KW potato KW variety Farn KW variety Barna KW variety Nevskiy KW biopreparation KW “Bigus KW VR” KW photosynthetic activity KW net photosynthetic productivity KW yield KW tuber quality JO Agrarian Bulletin of the AU Ikoeva, L.P. AU Haeva, O.E. PY 2023 IS 23 PB Ural State Agrarian University