عنوان مقاله [English]
In order to find the selective herbicide for weed control in black cumin, an experiment was conducted based on a randomized complete block design at the Research Farm of university of Zanjan, in 2017. Experimental treatments consisted of POST application of foramsulforon, oxadiazinon, niclosulfuron, rimsulforone, sulfosulfuron, atlantis and ottelo Pre plant application of pendimethaline, nontreated weedy controls, hand-weeded and weed-free plots. Results showed that the treatments had a significant effect on the density and biomass of weeds and Black cumin (P <0.01). All herbicide decreased grasses weed biomass except atlantis and foramsulforon. Broad leaf biomass was reduced by the application of herbicides, so that the highest control was obtained for atlantis and ottelo. The treatments including pendimethaline, rimsulforone, ottelo and atlantis effectively controlled total weeds by 60, 59, 57 and 50 %, respectively. The highest crop yield was related to weed free plots. Among the herbicides, oxadiazinon and foramsulforon caused the lowest injury on black cumin.