Descriptor: Northern Leaf Blight (NORTHERN-LEAF-BLIGHT)



 
Definition:
Leaf response to northern leaf blight organism (Exserhilum turcicum [Pass.] Leonard & Suggs - previous name was Helminthosporium turcicum.
Crop:
MAIZE
Category:
Disease descriptors
Status:
Data Type:
Alpha/numeric descriptor
Maximum Length:
1
Responsible Site:
North Central Regional Plant Introduction Station  (NC7)

Distribution of Values for Northern Leaf Blight (NORTHERN-LEAF-BLIGHT)

CodeDefinitionNumber of Accessions
1Very few lesions; little or no sporulation.66
22 on a scale 0 = No symptoms observed, 9 = Severe disease development134
3Occasional lesions; sporulation slight.161
44 on a scale 0 = No symptoms observed, 9 = Severe disease development380
5Many lesions; abundant sporulation.619
66 on a scale 0 = No symptoms observed, 9 = Severe disease development653
77 on a scale 0 = No symptoms observed, 9 = Severe disease development353
88 on a scale 0 = No symptoms observed, 9 = Severe disease development340
9Severe disease development; plants often dead.191