Roundup Ready varieties have expanded grower options for weed control, but growers are concerned about the effects of overspraying Roundup tolerance varieties with Roundup Ultra. University variety trials compare Roundup Ready varieties with conventional and bollgard varieties treated in the same system, hence, Roundup Ready varieties are not oversprayed with Roundup Ultra in these trials. The prupose of this study is a yield comparison of Roundup Ready varieties oversprayed with a labeled Roundup Ultra treatment with Roundup Ready varieties treated with conventional herbicides and not oversprayed with Roundup Ultra.