عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Wild mustard (Sinapis arvensis L.) and other brassica weeds are important in oilseed rape fields which, in addition to lowering yields, will adversely affect extracted oil quality. In this trial, efficacy of isoxaben (Cent 7, 12.5%SC) to control brassica weeds (in particular wild mustard), and other broad leaf weeds in oilseed rape fields of Hamedan and West Azarbaijan (with cold climate), was tested in a two-year experiment. The experiment was Randomized Complete Block Design with the following seven treatments in 4 replications: 0.4 and 0.5 L/ha of isoxaben used post emergence before rosette stage of Sinapis arvensis, alone or plus trifluralin (Treflan 48% EC) at 2 L/ha, trifluralin at 2L/ha, Weedy and weed free checks. Weed number, dry weight of weeds and oilseed rape yield were the data collected to compare treatments. Results showed that although, at best, Brassica weeds were controlled below 50%, and other broad leaf weeds under 60%, but a yield increase of 58% was observed. Therefore, It was suggested that use of 0.45 L/ha of isoxaben (post emergence) + 2 L/ha of trifluralin (pre plant incorporated) could be a recommendation for weed control in oilseed rape of cold regions.