Video: Summer patch, Polymyxa and mycorrhizae

Turfgrass disease field symptoms can sometimes be confusing. This video illustrates the diagnosis of summer patch on a sample that was also infected by polymyxa and mycorrhizae. The resulting field symptom looked somewhat like summer patch but occurred with narrow rings, partial rings and spots rather than the diffuse rings that are more typical for summer patch.

Summer patch polymyxa: PACE Turf video

Additional information:

- Summer disease management programs - Olpidium and polymyxa abstract…