EN
A field experiment was conducted in 2007–2009 at the Brody and Przybroda – Experimental Station of Poznań University of Life Sciences. The aim of this study was to compare weed control efficacy in winter oilseed rape using Proponit 720 herbicide EC at different doses and as a mixture with herbicide Command 480 EC. Conducted investigations showed very high efficacy of Proponit 720 EC applied in the dose of 3.0 l/ha in controlling Capsella bursa-pastoris, Veronica arvensis, Stellaria media, Matricaria inodora, Papaver rhoeas, Thlaspi arvense, Galium aparine, Veronica hederifolia and Lamium amplexicaule. Tank-mix of Proponit 720 EC and Command 480 EC herbicide in the dose of 2.0 l/ha + 0.2 l/ha showed very good weed control of Viola arvensis, G. aparine, L. amplexicaule, T. arvense, Veronica arvensis and V. hederifolia. There was no significant influence of herbicide treatments on the number of plants per m2, weight of 1 000 seeds, number of seeds per pod and yield of winter oilseed rape.