TY JOUR TI CROP ROTATION INFLUENCE ON THE SOIL FERTILITY AND THE SPRING WHEAT CROP CAPACITY KW forest-steppe KW spring wheat KW dark-chestnut soil KW crop rotation KW predecessor KW pure fallow KW sidereal fallow KW occupied fallow KW the Ulug-Hemsky hollow JO Bulletin of KSAU AU Zhulanova, V.N. AU Zharova, T.F. PY 2015 IS PB Krasnoyarsk State Agrarian University