Northern leaf blight of maize
Catalogue Type
Plant Diseases Catalogue
Scientific Name
Setosphaeria turcica
Family
Pleosporaceae
Distinguishing Characters
Early characters-The early corn leaf blight are grey to green and elliptical, beginning 1 to 2 weeks after infection.
Fully developed characters-Northern leaf blight lesions become pale gray to tan as they enlarge to 1 to 6 inches or longer. Distinct cigar shaped lesions unrestricted by leaf veins make northern corn leaf blight. Under moist conditions, lesions produce dark gray spores, usually on the lower leaf surface giving the lesions a dirty appearace. As many lesions enlarge and coalescence give leaves a grey appearance.
Fully developed characters-Northern leaf blight lesions become pale gray to tan as they enlarge to 1 to 6 inches or longer. Distinct cigar shaped lesions unrestricted by leaf veins make northern corn leaf blight. Under moist conditions, lesions produce dark gray spores, usually on the lower leaf surface giving the lesions a dirty appearace. As many lesions enlarge and coalescence give leaves a grey appearance.
Host Crop
Maize, Sorghum and wild grasses
Photo of Pathogen
Photo of Damaged Crop
