Kretzschmaria deusta, brittle cinder fungus, produces thick, rough, and lumpy fruiting bodies on the surface of the bark or wood, usually near ground level.
Hosts Perennial ryegrass as well as annual ryegrass and tall fescue.
Affected turf will ultimately collapse and appear as sunken, irregularly shaped patches.
Emily Braithwaite, 2022.
Leaf spots expand to become circular to oblong lesions and become gray to grayish-brown with dark brown to reddish-brown borders (circle on the right). Lesions coalesce and cause tip blighting, which often leads to twisting or flagging of leaf blades (circle on the left).
