TY JOUR TI Influence of the growth regulator “Regoplant” and microfertilizer “Ultramag Kombi” on photosynthetic activity of potatoes in the forest-steppe zone Republic of North Ossetia-Alania KW potatoes KW biologics KW growth regulator “Regoplant” KW microfertilizer “Ultramag Kombi” KW photosynthesis KW leaf area KW vegetative period KW pure photosynthesis productivity KW photosynthetic potential JO Agrarian Bulletin of the AU Ikoeva, L.P. AU Haeva, O.E. PY 2021 IS 210 PB Ural State Agrarian University