The field experiments on the efficacy of weed control of some herbicides: Azoprim 50 WP (atrazine), Maister 310 WG (formasulfuron + iodosulfuron), Dual 960 EC (metolachlor), Chwastox Turbo 340 SL (MCPA + dicamba), Aminopielik Gold 530 EW (fluroxypr + 2,4 D), Mustang 306 SE (florasulam + 2,4 D), Titus 25 WG (rimsulfuron), Emblem 20 WP (bromoxynil), Cadu Star SC (isoksuflutol + flufenacet), Successor 600 (pethoxamid) and Pledge 50 WP (flumioxazin) or their mixtures used in sugar maize cultivation have been conducted in 2004-2006 at the Experimental Station Swadzim near Poznań. On control plots, main species of weeds were: Viola arvensis, Brassica napus, Chenopodium album, Polygonum convolvulus, Echinochloa crus-galli and Galium aparine. The tested herbicides and their mixtures differently affected the reduction of fresh weight of weeds. The most useful for applying in sugar maize appeared Maister 310 WG with Aminopielik Gold 530 EW. Pledge 50 WP with Successor 600 gave good control of Viola arvensis, Chenopodium album and Galium aparine. The least useful for applying in sugar maize appeared Dual 960 EC + Emblem 20 WP. The highest yields of cobs were obtained after Maister 310 WG + Aminopielik Gold 530 EW application.

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