Yellow nutsedge is now one of the most common weeds in lawns, athletic fields and golf turf. Even though all textbooks say it thrives in wet areas, we see some of our worst yellow nutsedge infestations in dry years. Cultural controls will always help, but the standard herbicides are Basagran, SedgeHammer (formerly Manage), Certainty, and Dismiss. These are postemergence products requiring multiple applications in summer as yellow nutsedge regrows from tubers or rhizomes. However, recent research at the Universities of Nebraska, Maryland, and other states indicate FMC’s Dismiss (sulfentrazone) or Echelon (suflentrazone + prodiamine) when applied in spring at traditional preemergence crabgrass control timings have residual control of yellow nutsedge. Though these herbicides are not yet labeled for this particular use, they are labeled for lawn use already. We will be starting cooperative research project this spring with the University of Nebraska looking at if Dismiss and Echelon will work as a preemergence treatments in Indiana for yellow nutsedge. We will be showing our current yellow nutsedge research at our MRTF Research Field Day on July 21 in West Lafayette. In the mean time, following are two more articles reprinted with permission of Universities of Nebraska and Maryland with more details on yellow nutsedge biology and control.