Common root-infecting fungal diseases of turfgrass include take-all patch (Gaeumannomyces graminis var avenae), necrotic ring spot (Ophiosphaerella korrae), and summer patch (Magnaporthe poae). While these diseases rarely cause widespread damage, they can become severe in isolated areas or under prolonged periods of optimal infection conditions. The inability to see the infection and the delayed period between initial infection and symptom development make these diseases difficult to diagnose, difficult to control, and difficult to research. Further research investigating the basic biology and epidemiology of the pathogens, including their relationship to their particular host species, will aid in developing more effective and efficient control strategies for these frustrating diseases.
University of Wisconsin Root Disease Research