Gray Leaf Spot

From Turf Wiki

Jump to: navigation, search
Initial symptoms look like drought stress
Leaf tissue collapses, twists, and curls
Early symptoms; lesions on the leaf blade
  • Pathogen: Pyricularia grisea


  • Common Names: Gray Leaf Spot, Blast


  • Climatic Zone: Temperate


  • Geographic Distribution:North America, Europe, East Asia, Australia, South America, Africa


  • Favorable Conditions: Warm, humid/wet conditions


  • Hosts: Perennial ryegrass


  • Symptoms: Occurance of tiny brown lesions on leaves and stems that enlarge into tan to gray with purple or brown borders. The leaf tips may become twisted . Generally small patches that can enlarge into necrotic areas
Retrieved from "http://www3.hcs.ohio-state.edu/turfwiki/index.php/Gray_Leaf_Spot"
Personal tools