TY JOUR TI THE INFLUENCE OF TRADITIONAL AND MINIMAL TILLAGE SYSTEMS ON THE CONTENT IN SOIL NITRATE NITROGEN KW agrochemical inspection KW nitrate ni- trogen KW soil security KW nitrification KW tillage KW plowing KW disking KW cultivation KW weather conditions JO Bulletin of KSAU AU Kayl, A.V. PY 2019 IS PB Krasnoyarsk State Agrarian University