TY JOUR TI АSSESSMENT OF THE APPLICATION OF VARIOUS HERBICIDES IN THE TECHNOLOGY OF CULTIVATION OF FLOWER PLANTS OF THE ASTERACEAE FOR SEEDS ON THE EXAMPLE OF CALLISTHUS CHINENSIS L. KW flower seed KW herbicides KW cultivation technology KW seed yield KW optimization JO INTERNATIONAL AGRICULTURAL JOURNAL AU Vlasova, N.. AU Korenkov, E.. PY 2019 IS 2 PB Electronic science