TY CONF TI EFFICIENCY OF PROPPANT APPLICATION (CERAMIC BEADS) ON DARK GRAY FOREST SOILS OF LOAM PARTICLE SIZE COMPOSITION KW JO Proceedings of The international scientific and practical conference AU Baykin, Y.L. AU Fedorov, A.N. AU Serebrennikova, A.A. PY 2024 PB Ural State Agrarian University