Tropicalspiderwort weeds in larger plantings may prove more difficult to control. In these cases, manual control is often not a realistic option. Visual estimates of tropicalspiderwortcontrol were evaluated between the last two rows of each plot at 3 and 6 wk WAT based on a scale of 0 (no control) to 100 (plant death) in Georgia. In 2003 and 2004, only s-metolachlor at 1.60 kg/ha controlledtropicalspiderwort >80%. Because of soil type restrictions in 2003 and 2004, lower rates of fluometuron were used, and... Rates of tropicalspiderwort emergence for most treatments were similar to the untreated control (1.61% per day). Flumioxazin at 0.035 kg/ha (1.22% per day) and s-metolachlor at 1.07... Tropicalspiderwort can be controlled in field corn with postemergence applications of Basagran®, and 2,4-D amine or post-directed/lay-by applications of Gramoxone Max®, Evik®... During 2011/2012 with greater adoption of Liberty-based programs, tropicalspiderwort became more problematic as Liberty is not effective in controlling this weed. Tropicalspiderwort (Commelina benghalensis), a noxious weed, has been found in several landscape beds in Raleigh. For tropicalspiderwort better control has been observed when applied with Gramoxone at cracking. Outlook. or. Tropicalspiderwort is native to tropical Asia and Africa. In its native region, it is an herbaceous perennial weed. Tropicalspiderwort identification and control in Georgia field crops.
