Which corn disease are these foliar symptoms (picture below) associated with ?

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Houda Kawas

Dear Cyprien Gerard

Cochliobolus heterostrophu (also known as Bipolaris maydis / ), Disease development is promoted by prolonged wetness on foliage, extended dew, Relative Humidity (97-100%) and relatively warm temperatures (24-35° C).

Pls. find the attached file

https://www.pioneer.com/home/site/us/agronomy/crop-management/corn-insect-disease/southern-leaf-blight/

Hoping this will be helpful

Regards

Prof. Houda Kawas

Rodrigo Orlando Campo Arana

Physoderma maydis in zea mays

Paul Reed Hepperly

looks like southern corn leaf blight as the Professor Houda Kawas indicates

Moist chamber with sporulation can give confirmation along with a PCR Blast analysis.

The commercial product tilt would be able to control an epidemic. Particularly when made at critical periods based on environmental conditions and plant stages.

South Corn Leaf Blight is usually controlled by genetic resistance.

N. M. Gohel

Maydis leaf blight of maize due to Bipolaris maydis.

Cyprien Gerard

Thanks a lot Houda Kawas, Rodrigo Orlando Campo Arena, Paul Reed Hepperly and Naresh Gohel for all your contributions !