Ronny R. Duncan, Ph.D., is a retired professor of turfgrass science at the University of Georgia. His general research has involved field evaluation, breeding and mechanisms of tolerance to environmental stress complexes, such as salinity, soil acidity and drought that are associated with problems in Gramineae species. He has been working specifically on turf since 1992 and has extensive experience in growing grasses in stress environments. He has been developing improved seashore paspalum and tall fescue cultivars since 1993. He is a full time consultant on water issues in growing grass.