Weed vegetation control in spring barley crops with the herbicide tandem use at different periods of its application

Abstract

In spring barley crops the herbicide tandem, WG controls annual including the resistant to 2,4-D and 2M-4X and some perennial dicotyledonous weeds. Crops spraying with the herbicide at the rate of application 15-25 g/ha should be the most rationally done from 2–3 leaves of the crop and up to full tillering where total dicotyledonous weeds infestation decreased for 78,5–98,4% by number and for 79,3–93,8% by vegetative weight.
In variants where tandem, WG was applied in combination with the SAS Fortuna (250 ml/ha) the efficiency was increased and total weed infestation decreased for 94,7–97,9% by number and for 98,8–99,6% by vegetative weight.