Pathogen:
Colletotrichum graminicola
Host:
Annual Bluegrass, Creeping Bentgrass, Kentucky Bluegrass, Fine Fescue, Perennial Ryegrass
Environmental Requirements:
80-95 F, high moisture
Stand Symptoms:
irregular-shaped patches of yellowed or bronzed turf, several inches to feet wide
Plant Symptoms:
elongated reddish-brown lesions
Fungal Signs
dark acervuli and setae
Environmental Modification:
decrease thatch, relieve compaction, increase P and K fertility
Plant Resistance:
use less susceptible species
