Host range experiments suggest general host-specialisation of Rhynchosporium species.

Leaf blotch disease symptoms developed at 23 days post inoculation when isolates of Rhynchosporium commune, R. orthosporum or R. lolii were cross-inoculated onto different hosts under controlled environment conditions.aWhole plants scored for presence (+) or absence (−) of leaf blotch lesions;bScores for replicate plants are given;cPlants 14-days-old at time of inoculation;dPlants 35-days-old at time of inoculation;ePlants 35- or 40- days-old at time of inoculation (results separated by a comma);fn/a, not applicable.