Luqi Li, lecturer, Department of Agronomy and Horticulture, University of Nebraska–Lincoln, presents “Interference Between Kentucky Bluegrass (Poa pratensis) and Yellow Nutsedge (Cyperus esculentus) in a Home Lawn Setting.” The presence of yellow nutsedge reduces turfgrass uniformity and visual quality in home lawns and playability on golf courses and athletic fields. We found that an actively growing Kentucky bluegrass stand impedes tuber and shoot production of yellow nutsedge from 65 to 99% without using herbicide.