Gray Leaf Spot of Perennial Ryegrass

Fig. 14. Perennial ryegrass (a) inoculated with 15 ml of a 1.5-×-106-conidia-per-ml suspension of Magnaporthe oryzae or (b) sprayed with distilled water and incubated in a near saturated growth chamber at 28°C for 7 days.



Image from Plant Health Progress article:
Gray Leaf Spot of Perennial Ryegrass