TY JOUR TI MICROBIOLOGICAL AND BIOCHEMICAL PROPERTIES OF SOILS UNDER DIFFERENT DURATIONS OF ORGANIC FARMING APPLICATION KW soil KW organic farming KW enzyme activity KW trophic groups of microorganisms KW eco-trophic indices JO Scientific Notes of V.I. Vernadsky Crimean Federal University. Biology. Chemistry AU Kulagina, V.I. AU Sungatullina, L.M. AU Shagidullin, R.R. AU Ryazanov, S.S. AU Hayrullina, A.M. AU Gordeeva, K.A. PY 2025 IS 11 PB V.I. Vernadsky Crimean Federal University