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Bromus tectorum causes special problems because of its ability to reproduce through seeds and also because it’s relative tolerance to numerous herbicides. Extending new tillage systems, conservative systems specific to conservative sustainable agriculture, is a difficult task to accomplish under the circumstances of strong monocotyledonous weed infested Bromus tectorum is one of the most dangerous monocotyledonous weeds when applying unconventional system. A research was conducted in the pedoclimate condition of Agricultural Research and Development Station Turda, investigating the control of Bromus tectorum by conservative tillage. The goal was to determine the relationship between agricultural system and weeding degree on winter wheat. The use of minimum tillage and no tillage systems, caused at the end of a three year crop rotation, the increase of the Bromus tectorum pervasion in two systems, MD and NT. The occurrence of B. tectorum it is caused mainly due to the fact that the seeds are located in the first cm of the soil. Total weed density was significantly lower under the conventional tillage system (CS) and minim-chisel (MC) than under the minimum tillage-disk (MD) and no till (NT) system. The main benefit of the conventional tillage (CS) is a highly important decline of weeds.
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