Northern leaf spot

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Spot-causing fungal disease occurring increasingly mainly in the cool region. The disease begins to occur around the rainy season and stripe lesions are produced along the midrib abundantly. Lesions are ash white with brown border, 0.5-3cm in length and 0.1-0.5cm in width. Lesions expand and fuse when occurring severely, and the infected leaf withers. The symptom in the picture is caused by race 3 of the pathogen, and the race is mainly occurring in Japan. Race 2 which produces short stripe is occurring a little, but no occurrences of race 1 which produces round lesions in specific corn lines have been reported in Japan.

Presence among species

Pathogen Susceptible Host
Cochliobolus carbonum Zea mays
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