TY CONF TI IMPROVEMENT OF THE SCIENTIFIC BASICS OF ARID AGRICULTURE OF BURYATIA KW dry steppe KW crop rotation KW spring wheat KW spring rye KW oats KW green mass KW productivity KW economic assessment JO «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE» AU Ulanov, A.K. PY 2024 PB Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS