investigating possibility of tank mixture of nicosulfuron+ rimsulfuron (ultima) with bromoxynil+mcpa (bromicid ma) for weed

to investigate the possibility of tank-mix application of two herbicides; nicosulfuron+ rimsulfuron (ultima 4% sc) and bromoxinil+mcpa (bromicide ma 40 % ec) for control of narrow and broadleaf weeds in corn an experiment was carried out in jiroft agricultural research centers during 2010. the experiment was conducted in a rrandomized complete block design with two-factors and four replications. the first factor was nicosulfuron+ rimsulfuron dosage at four levels; 0, 125, 150 and 175 grams per hectare and the second factor was bromoxynil +mcpa at 0, 0.5, 1.0 and 1.5 liters per hectare. the results showed that the best combination of tank-mix of the above mentioned herbicides, considering weed control efficiency and percent of corn yield augmentation was 0.5 to 1.0 liters per hectare of bromoxinil+mcpa and 125 to 150 grams per hectare of nicosulfuron+ foramsulfuron. these treatments had the best control of weeds of digera muricata, portulaca oleracea, convolvulus arvensis, physalis alkekengi, amatanthus. sp, malva parviflora and increased seed corn by 6719 kg ha-1