TY JOUR TI THE EFFICIENCY OF HERBICIDES OF JSC "BAYER" IN COMBATING WITH WEED PLANTS IN GRAIN CROPS SOWS KW weeds KW soil cultivation system KW crops contam-ination KW vegetation period KW herbicides KW tank mixture KW biological efficiency of herbicides JO Bulletin of KSAU AU Lipsky, S.I. AU Pantyukhov, I.V. AU Ivchenko, V.K. PY 2018 IS PB Krasnoyarsk State Agrarian University