The Michigan State University Turfgrass Information Center has the largest on-line library of information on turfgrass and turfgrass research in the U.S. Unfortunately they require a subscription to access many of their articles and publications.
There is a lot of on-going research relating to turf grass. Turf grass is a huge industry in North America and the increased popularity of golf has a resulted in a corresponding interest in turf grass. Unfortunately there is substantially less research being conducted about how to use less water on turf grass. As water becomes more scarce across the country, this will change.