TY CONF TI COMPARATIVE ASSESSMENT OF SOIL TILLAGE SYSTEMS UNDER THE CONDITIONS OF MODERATE ARY STEPPE OF NORTHERN KAZAKHSTAN UPON THE SPRING WHEAT CULTIVATION KW zonal soil conservation KW zero tillage KW soil tillage systems KW spring wheat productivity JO «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE» AU Pigorev, I.Y. AU Bodryy, K.V. AU Shilo, E.V. AU Chudinov, V.A. AU Kaldybaev, D.S. PY 2024 PB Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS