Investigating possibility of some broadleaf killers with current grass killers tank mixture in wheat fields

To study the possibility of tank mixture of bromoxynil plus MCPA EC 40% and MCPA plus dichloprop- p plus mecoprop- p SL 60% with clodinafop propargyl EC 80% and fenoxaprop-pethyl EW 7.5% two set of experiments were conducted in 2004-2005and 2005-2006. Field experiments were conducted at three locations (Gonbad, Dezfoul and Shahroud) as a randomized complete block design with four replications. Treatments consisted of tank mixture of MCPA plus dichloprop-p plus mecoprop-p at 2.5 L/ha and bromoxynil plus MCPA at 1.5 L/ha with clodinafop propargly at 0.8, 1 and 1.2 L/ha, and fenoxaprop-p ethyl at 1, 1.2 and 1.4 L./ha, tribenuron methyl DF 75% at 20 g/ha plus clodinafop propargyl EC 80% at 0.8 L/ha as reference standard herbicide, adn dual purpose herbicide iodosulfuron-methyl-sodium plus mesosulfuron-methyl WG 6% at 350 g/ha plus non-ionic surfactant at 0.2% (v/v). At Tehran, in the greenhouse experiments, efficacy of sulfosulfuron at 26.6 g/ha plus non-ionic surfactant at 0.2% (v/v), tank mixture of 2, 4-D and 2,4-D plus MCPA with clodinafop propargly and fenoxaprop-p ethyl (samedoses as in the field experiments ) along with those treatments in the field experiments were studied in control of wild oat, ryegrass,downy brome, hairy wetch,high mallow,black bindweed. Results indicated that tank mixture of MCPA plus dicloprop-p plus mecoprop-p at 2.5 L/ha with clodinafop propargyl at 0.8 L/ha, add bromoxynil plus MCPA at 1.5 L/ha with clodinafop propargly at 0.8 to 1 L/ha satisfactorily controlled broadleaved and grass weeds. Fenoxaprop-p-ethyl could not satisfactorily control grass weeds, however, its tank mixed from had some synergistic effects on broadleaved weeds. tank mixing 2,4D and 2,4-D plus MCPA with clodinafop propargyl and fenoxaprop-p ethyl, respectively, reduced grass herbicides efficacy. None of herbicide treatments could control downy brome except for sulfosulfuron.