TY JOUR TI TRACE ELEMENTS IN THE AGROCENOSIS OF A PEAR ORCHARD DURING BIOLOGIZATION KW pear agrocenosis (Pyrus communis) KW trace elements KW biologization KW segetal vegetation KW mixtures of sown grasses KW microbial preparations KW soil KW plant nutrition JO Ekosistemy AU Klimenko, O.E. AU Novickaya, A.P. AU Yakusheva, N.N. AU Struchenko, A.V. AU Fedyahin, I.A. PY 2024 IS PB V.I. Vernadsky Crimean Federal University