Soft rush is a perennial, tussock-forming plant that often infests low-lying grazing areas in Florida. Experiments were conducted to determine the most effective herbicides for control of soft rush. Herbicide treatments included triclopyr + fluroxypyr at 0.43 + 0.15 and 0.86 + 0.30 kg/ha, 2,4-D amine at 1.12 and 2.24 kg/ha, 2,4-D amine + carfentrazone at 1.12 + 0.02 and 2.24 + 0.02 kg/ha, aminopyralid at 0.12 kg/ha, and 2,4-D amine + dicamba at 1.61 + 0.56 kg/ha and were applied to soft rush with and without mowing to a 15-cm stubble height. Aminopyralid and triclopyr + fluroxypyr did not control soft rush with or without mowing 1 and 12 mo after treatment (MAT). When mowing occurred prior to application, treatments containing 2,4-D provided at least 81 control of soft rush 1 MAT. In contrast, control was no greater than 59 when treatments were applied without mowing soft rush. Mowing had no impact on soft-rush control with herbicides 12 MAT. Applications of 2.24 kg/ha 2,4-D provided at least 90 control 12 MAT, but this was not significantly different from the premix of 2,4-D + dicamba or 2.24 + 0.02 kg/ha 2,4-D + carfentrazone treatments. Therefore, effective control of soft rush can be obtained with the use Of 2,4-D amine Or products that contain 2,4-D amine.
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