optimizing efficacy of mesosulfuron-methyl + iodososulfuron-methyl+ mefenpyr (atlantis) ® herbicide to control wild oat (avena ludoviciana) with the vegetable oils

in order to compare the impact of vegetable oils to improve the efficacy of mesosulfuron-methyl + iodososulfuron - methyl + mefenpyr (atlantis)®, a greenhouse experiment of dose-response as factorial experiment in a completely randomized design including concentration 0, 3/75, 7/5, 15, 22/5, and second factor 30 g a.i. ha-1 of atlantis at 13 levels of with and without vegetable oils (each of two levels) of soybean, canola, turnip, sesame, sweet almond, and olive against wild oat (avena ludoviciana) with four replications was done. the results showed that the use of vegetable oils significantly (p olive oil> soybean> sweet almond>canola> sesame and in concentration of. /2% respectively rapeseed oil> soybean> olive> sweet almond > canola> sesame. the overall results showed that by increasing the content of saturated fatty acids in vegetable oils, ability to lower of surface tension decreases, but effectiveness of herbicide increases.