The easy to use Syngenta Grass Identification Guide, produced in conjunction with specialists from the Sports Turf Research Institute (STRI), provides a quick and reliable means to accurately assess the main turf grass species. The Syngenta Grass ID Guide is uniquely designed to help identify grass species in closely mown turf. Following a route of characteristic physiological features you will be able to determine the grass species present, and make a visual assessment of the sward composition. The Grass ID Decision Tree on pages 8 & 9 tracks through a logical sequence of characteristics to quickly and accurately determine the species.