ABSTRACT
In 1998, Dernoeden et al.1 discovered a new disease of creeping bentgrass (Agrostis stolonifera L.) incited by an unidentifi ed species of Ophiosphaerella. Through morphological and molecular study, it was shown that the pathogen constituted a new species, Ophiosphaerella agrostis.2 The disease is commonly referred to as dead spot. Research on various biological and genetic aspects of O. agrostis and epidemiology and management of dead spot was conducted at the University of Maryland between 1998 and 2004. A synthesis of these results and suggestions for future dead-spot research are presented herein.
