Biological effectiveness of herbicides in winter wheat crops of autumn sowing

An effective measure for controlling the most harmful wintering and winter weed species, such as Apera spica-venti, Galium aparine, Veronica persica, Consolida regalis, Capsella bursa-pastoris, Descurainia Sophia, Vicia villosa, etc. in wheat crops is autumn application of herbicides, especially early stages crop development, starting from seed germination stage, when it sensitive to their presence. The study presents results two-year studies on biological effectiveness applying herbicide Pledge 50, WP different development (BBCH 00, 11, 12, 14, 16) independently a mixture with herbicides partners: Zenkor Liquid 600, SC, Marathon, Granstar Gold 75, WG, Grodil Maxi 375, OD, adjuvant Skaba, EC. As result, identified that drugs under against spica-venti other weeds substantially differed depending phase during period application. Pre-emergence does not ensure proper control weeds. In particular, spring resumption vegetation, use 0.1 kg/ha was 69.0%, an overall efficiency 68.0%. Application 0.4 l/ha Sencor CS provided indicators 66.1 71.4%, respectively. introduction BBCH 11 high all general 91.2 87.6%, reduced rate 0.08 12 did reduce both – 87.4%, particular 93.1%. (0.1 kg/ha) 16 had worse, but acceptable effect 84.2% 83.6% overall. best weeds, general, obtained by using + WG EC (0.06 0.025 0.05 l/ha) 14 97.5 99.2%, which at level SC OD (0.35 0.11 kg/ha). highest yield experiment 7.56 t/ha, 59.8% better than